{"id":15201,"date":"2025-04-08T20:15:10","date_gmt":"2025-04-08T12:15:10","guid":{"rendered":"https:\/\/viox.com\/?p=15201"},"modified":"2026-04-02T11:29:23","modified_gmt":"2026-04-02T03:29:23","slug":"dc-isolator-vs-dc-circuit-breaker-complete-comparison-guide","status":"publish","type":"post","link":"https:\/\/test.viox.com\/my\/dc-isolator-vs-dc-circuit-breaker-complete-comparison-guide\/","title":{"rendered":"DC Isolator vs DC Circuit Breaker in Solar Combiner Boxes: Different Jobs, Different Risks"},"content":{"rendered":"<div class=\"product-intro\">\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Inside-a-solar-combiner-box-showing-DC-breakers-and-an-output-side-DC-isolator.webp\" alt=\"Inside a solar combiner box showing DC breakers and an output-side DC isolator\" style=\"max-width: 100%; height: auto;\"><figcaption style=\"margin-top: 8px; color: #555;\"><i>\u1006\u102d\u102f\u101c\u102c\u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1021\u1010\u103d\u1004\u103a\u1038\u1015\u102d\u102f\u1004\u103a\u1038: \u1000\u103c\u102d\u102f\u1038\u1000\u102c\u1000\u103d\u101a\u103a\u1019\u103e\u102f\u1021\u1010\u103d\u1000\u103a\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u101e\u1031\u102c DC circuit breaker \u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a manual \u1016\u103c\u102f\u1010\u103a\u1010\u1031\u102c\u1000\u103a\u1001\u103c\u1004\u103a\u1038\u1021\u1010\u103d\u1000\u103a \u1021\u1013\u102d\u1000 output-side DC isolator \u1000\u102d\u102f \u101b\u103e\u1004\u103a\u1038\u101c\u1004\u103a\u1038\u1005\u103d\u102c\u1019\u103c\u1004\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c \u1021\u1010\u103d\u1004\u103a\u1038\u1015\u102d\u102f\u1004\u103a\u1038\u1019\u103c\u1004\u103a\u1000\u103d\u1004\u103a\u1038\u104b.<\/i><\/figcaption><\/figure>\n<p>\u1006\u102d\u102f\u101c\u102c\u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u104f\u1021\u1010\u103d\u1004\u103a\u1038\u1015\u102d\u102f\u1004\u103a\u1038\u1010\u103d\u1004\u103a DC switching devices \u1014\u103e\u1005\u103a\u1019\u103b\u102d\u102f\u1038\u1000\u102d\u102f \u1011\u1015\u103a\u1001\u102b\u1011\u1015\u103a\u1001\u102b\u1010\u103d\u1031\u1037\u101b\u1015\u103c\u102e\u1038 \u104e\u1004\u103a\u1038\u1010\u102d\u102f\u1037\u1000\u102d\u102f \u1019\u1030\u101c\u1021\u102c\u1038\u1016\u103c\u1004\u1037\u103a \u1021\u1015\u103c\u1014\u103a\u1021\u101c\u103e\u1014\u103a\u1021\u101e\u102f\u1036\u1038\u1015\u103c\u102f\u104d\u1019\u101b\u1015\u102b\u104b A <strong>DC isolator<\/strong> \u101e\u100a\u103a \u1005\u1014\u1005\u103a\u1000\u102d\u102f \u101c\u102f\u1036\u1001\u103c\u102f\u1036\u1005\u103d\u102c\u1015\u103c\u102f\u1015\u103c\u1004\u103a\u1014\u102d\u102f\u1004\u103a\u101b\u1014\u103a\u1021\u1010\u103d\u1000\u103a manual, intentional isolation \u1000\u102d\u102f\u1015\u1031\u1038\u101b\u1014\u103a\u1021\u1010\u103d\u1000\u103a \u1021\u1013\u102d\u1000\u1011\u102c\u1038\u101b\u103e\u102d\u1015\u102b\u101e\u100a\u103a\u104b A <strong>DC circuit breaker<\/strong> \u101e\u100a\u103a overcurrent \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a short-circuit \u1021\u1001\u103c\u1031\u1021\u1014\u1031\u1019\u103b\u102c\u1038\u1000\u102d\u102f\u101b\u103e\u102c\u1016\u103d\u1031\u1015\u103c\u102e\u1038 circuit \u1000\u102d\u102f\u1021\u101c\u102d\u102f\u1021\u101c\u103b\u1031\u102c\u1000\u103a\u1021\u1014\u103e\u1031\u102c\u1000\u103a\u1021\u101a\u103e\u1000\u103a\u1015\u1031\u1038\u101b\u1014\u103a\u1021\u1010\u103d\u1000\u103a \u1021\u1013\u102d\u1000\u1011\u102c\u1038\u101b\u103e\u102d\u1015\u102b\u101e\u100a\u103a\u104b.<\/p>\n<p>\u104e\u1004\u103a\u1038\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1019\u1010\u1030\u100a\u102e\u101e\u1031\u102c\u1021\u1014\u1039\u1010\u101b\u102c\u101a\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1000\u102d\u102f\u1004\u103a\u1010\u103d\u101a\u103a\u1016\u103c\u1031\u101b\u103e\u1004\u103a\u1038\u101e\u100a\u103a\u104b \u104e\u1004\u103a\u1038\u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1000\u102c\u1000\u103d\u101a\u103a\u101b\u1031\u1038\u1021\u1006\u1004\u1037\u103a\u1006\u1004\u1037\u103a\u104f \u1019\u1010\u1030\u100a\u102e\u101e\u1031\u102c\u1021\u1005\u102d\u1010\u103a\u1021\u1015\u102d\u102f\u1004\u103a\u1038\u1019\u103b\u102c\u1038\u1010\u103d\u1004\u103a \u1010\u100a\u103a\u101b\u103e\u102d\u101e\u100a\u103a\u104b \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1014\u102c\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u104e\u1004\u103a\u1038\u1010\u102d\u102f\u1037\u1000\u103c\u102c\u1038\u101b\u103e\u102d\u1019\u103b\u1009\u103a\u1038\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1000\u102d\u102f \u1019\u103e\u102f\u1014\u103a\u101d\u102b\u1038\u1005\u1031\u101e\u1031\u102c\u1021\u1001\u102b \u101b\u101c\u1012\u103a\u101e\u100a\u103a \u1005\u102c\u101b\u103d\u1000\u103a\u1005\u102c\u1010\u1019\u103a\u1038\u1015\u103c\u103f\u1014\u102c\u1021\u101e\u1031\u1038\u1021\u1019\u103d\u103e\u102c\u1038\u1010\u1005\u103a\u1001\u102f\u1019\u101f\u102f\u1010\u103a\u1015\u102b\u104b \u104e\u1004\u103a\u1038\u101e\u100a\u103a nuisance trips \u1019\u103b\u102c\u1038\u104a \u1021\u102c\u1038\u1014\u100a\u103a\u1038\u101e\u1031\u102c fault protection\u104a \u1001\u1000\u103a\u1001\u1032\u101e\u1031\u102c\u1015\u103c\u102f\u1015\u103c\u1004\u103a\u1011\u102d\u1014\u103a\u1038\u101e\u102d\u1019\u103a\u1038\u1019\u103e\u102f\u101c\u102f\u1015\u103a\u1011\u102f\u1036\u1038\u101c\u102f\u1015\u103a\u1014\u100a\u103a\u1038\u1019\u103b\u102c\u1038 \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a enclosure \u1021\u1010\u103d\u1004\u103a\u1038\u104c DC arcing \u1000\u102d\u102f \u1011\u102d\u1014\u103a\u1038\u1011\u102c\u1038\u1001\u103c\u1004\u103a\u1038\u1021\u1016\u103c\u1005\u103a \u1015\u1031\u102b\u103a\u101c\u102c\u101e\u100a\u103a\u104b.<\/p>\n<p>\u1024\u101c\u1019\u103a\u1038\u100a\u103d\u103e\u1014\u103a\u101e\u100a\u103a PV \u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1010\u103d\u1004\u103a \u1019\u100a\u103a\u101e\u100a\u1037\u103a\u1000\u102d\u101b\u102d\u101a\u102c\u1010\u1005\u103a\u1001\u102f\u1005\u102e\u101b\u103e\u102d\u101e\u1004\u1037\u103a\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u104a \u1021\u1018\u101a\u103a\u1000\u103c\u1031\u102c\u1004\u1037\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1019\u103b\u102c\u1038\u1005\u103d\u102c\u1010\u103d\u1004\u103a \u1014\u103e\u1005\u103a\u1001\u102f\u1005\u101c\u102f\u1036\u1038\u101c\u102d\u102f\u1021\u1015\u103a\u1000\u103c\u1031\u102c\u1004\u103a\u1038 \u101b\u103e\u1004\u103a\u1038\u1015\u103c\u1011\u102c\u1038\u101e\u100a\u103a\u104b <strong>\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038<\/strong>, \u1014\u103e\u1004\u1037\u103a \u1019\u100a\u103a\u101e\u100a\u1037\u103a\u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1019\u103e\u102f\u1021\u1019\u103e\u102c\u1038\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1010\u1000\u101a\u1037\u103a\u1015\u101b\u1031\u102c\u1002\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1010\u103d\u1004\u103a \u1011\u1015\u103a\u1001\u102b\u1011\u1015\u103a\u1001\u102b\u1015\u1031\u102b\u103a\u101c\u102c\u1014\u1031\u101e\u1014\u100a\u103a\u1038\u104b.<\/p>\n<p>\u101e\u1004\u103a\u101e\u100a\u103a \u1015\u102d\u102f\u1019\u102d\u102f\u1000\u103b\u101a\u103a\u1015\u103c\u1014\u1037\u103a\u101e\u1031\u102c enclosure context \u1000\u102d\u102f \u1026\u1038\u1005\u103d\u102c\u101c\u102d\u102f\u1001\u103b\u1004\u103a\u1015\u102b\u1000\u104a <a href=\"https:\/\/test.viox.com\/my\/combiner-box\/\">\u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1011\u102f\u1010\u103a\u1000\u102f\u1014\u103a\u1005\u102c\u1019\u103b\u1000\u103a\u1014\u103e\u102c<\/a> \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a \u101b\u103e\u1004\u103a\u1038\u101c\u1004\u103a\u1038\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1005\u1010\u1004\u103a\u1015\u102b\u104b <a href=\"https:\/\/test.viox.com\/my\/what-does-a-solar-combiner-box-do\/\">\u1006\u102d\u102f\u101c\u102c\u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1000 \u1018\u102c\u101c\u102f\u1015\u103a\u101e\u101c\u1032<\/a>. \u1024\u1006\u1031\u102c\u1004\u103a\u1038\u1015\u102b\u1038\u101e\u100a\u103a \u101e\u1031\u1010\u1039\u1010\u102c\u1021\u1010\u103d\u1004\u103a\u1038\u101b\u103e\u102d \u1000\u102d\u101b\u102d\u101a\u102c\u1021\u1001\u1014\u103a\u1038\u1000\u100f\u1039\u100d\u1014\u101a\u103a\u1014\u102d\u1019\u102d\u1010\u103a\u1000\u102d\u102f \u1021\u1013\u102d\u1000\u1011\u102c\u1038\u101e\u100a\u103a\u104b.<\/p>\n<h2>\u1010\u102d\u102f\u1000\u103a\u101b\u102d\u102f\u1000\u103a\u1021\u1016\u103c\u1031<\/h2>\n<p>\u1010\u1032\u1037 <strong>DC isolator<\/strong> \u101e\u100a\u103a <strong>manual isolation \u1014\u103e\u1004\u1037\u103a safe disconnection \u1021\u1010\u103d\u1000\u103a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b<\/strong>. A <strong>DC circuit breaker<\/strong> \u101e\u100a\u103a <strong>automatic overcurrent interruption<\/strong>.<\/p>\n<p>PV \u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1019\u103b\u102c\u1038\u1010\u103d\u1004\u103a\u104a \u101a\u1004\u103a\u1038\u101e\u100a\u103a \u1019\u103b\u102c\u1038\u101e\u1031\u102c\u1021\u102c\u1038\u1016\u103c\u1004\u1037\u103a-<\/p>\n<ul>\n<li>\u1021\u1013\u102d\u1000 <strong>isolator \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a<\/strong> \u1015\u103c\u102f\u1015\u103c\u1004\u103a\u1011\u102d\u1014\u103a\u1038\u101e\u102d\u1019\u103a\u1038\u1019\u103e\u102f\u104a lockout \u1014\u103e\u1004\u1037\u103a local disconnection \u1000\u102d\u102f \u1021\u1011\u1031\u102c\u1000\u103a\u1021\u1015\u1036\u1037\u1015\u1031\u1038\u101e\u100a\u103a\u104b<\/li>\n<li>\u1021\u1013\u102d\u1000 <strong>breaker function<\/strong> fault \u1021\u1001\u103c\u1031\u1021\u1014\u1031\u1019\u103b\u102c\u1038\u1021\u1031\u102c\u1000\u103a\u1010\u103d\u1004\u103a string \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a feeder protection \u1000\u102d\u102f \u1021\u1011\u1031\u102c\u1000\u103a\u1021\u1015\u1036\u1037\u1015\u1031\u1038\u101e\u100a\u103a\u104b<\/li>\n<\/ul>\n<p>\u1000\u102d\u101b\u102d\u101a\u102c\u1010\u1005\u103a\u1001\u102f\u101e\u100a\u103a \u104e\u1004\u103a\u1038\u104f\u1005\u102c\u101b\u1004\u103a\u1038\u104a \u1021\u1019\u103e\u1010\u103a\u1021\u101e\u102c\u1038\u1014\u103e\u1004\u1037\u103a \u1021\u101e\u102f\u1036\u1038\u1001\u103b\u1019\u103e\u102f\u1000 \u1001\u103d\u1004\u1037\u103a\u1015\u103c\u102f\u1015\u102b\u1000 \u1010\u1005\u103a\u1001\u102b\u1010\u1005\u103a\u101b\u1036 \u101c\u102d\u102f\u1021\u1015\u103a\u1001\u103b\u1000\u103a\u1010\u1005\u103a\u1001\u102f\u1011\u1000\u103a\u1015\u102d\u102f\u104d \u1016\u103c\u100a\u1037\u103a\u1006\u100a\u103a\u1038\u1015\u1031\u1038\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b \u101e\u102d\u102f\u1037\u101e\u1031\u102c\u103a \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1014\u102c\u1019\u103b\u102c\u1038\u101e\u100a\u103a breaker \u101e\u100a\u103a isolator \u1000\u102d\u102f \u1021\u101c\u102d\u102f\u1021\u101c\u103b\u1031\u102c\u1000\u103a\u1021\u1005\u102c\u1038\u1011\u102d\u102f\u1038\u101e\u100a\u103a \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a isolator \u101e\u100a\u103a overcurrent protection \u1000\u102d\u102f \u1010\u1005\u103a\u1014\u100a\u103a\u1038\u1014\u100a\u103a\u1038\u1016\u103c\u1004\u1037\u103a \u1021\u1005\u102c\u1038\u1011\u102d\u102f\u1038\u101e\u100a\u103a\u101f\u102f \u101a\u1030\u1006\u1001\u103b\u1000\u103a\u1019\u103e \u1005\u1010\u1004\u103a\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u101e\u1004\u1037\u103a\u101e\u100a\u103a\u104b.<\/p>\n<h2>\u1021\u1013\u102d\u1000 \u1014\u103e\u102d\u102f\u1004\u103a\u1038\u101a\u103e\u1009\u103a\u1001\u103b\u1000\u103a- \u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u101b\u103e\u102d DC Isolator \u1014\u103e\u1004\u1037\u103a DC Circuit Breaker<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Technical-infographic-comparing-DC-isolators-and-DC-circuit-breakers-in-solar-combiner-boxes.webp\" alt=\"Technical infographic comparing DC isolators and DC circuit breakers in solar combiner boxes\" style=\"max-width: 100%; height: auto;\"><figcaption style=\"margin-top: 8px; color: #555;\"><i>\u1021\u1004\u103a\u1002\u103b\u1004\u103a\u1014\u102e\u101a\u102c\u1014\u103e\u102d\u102f\u1004\u103a\u1038\u101a\u103e\u1009\u103a\u1001\u103b\u1000\u103a- PV \u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1021\u101e\u102f\u1036\u1038\u1001\u103b\u1019\u103e\u102f\u1019\u103b\u102c\u1038\u1010\u103d\u1004\u103a DC Isolators (Switch-Disconnectors) \u1014\u103e\u1004\u1037\u103a DC Circuit Breakers (DC-MCB) \u1010\u102d\u102f\u1037\u1000\u102d\u102f \u1006\u1014\u1037\u103a\u1000\u103b\u1004\u103a\u1018\u1000\u103a\u1016\u103c\u1005\u103a\u1005\u1031\u101e\u1031\u102c \u1002\u102f\u100f\u103a\u101e\u1010\u1039\u1010\u102d\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1021\u101e\u1031\u1038\u1005\u102d\u1010\u103a\u1001\u103d\u1032\u1001\u103c\u1019\u103a\u1038\u1005\u102d\u1010\u103a\u1016\u103c\u102c\u1001\u103c\u1004\u103a\u1038\u104b.<\/i><\/figcaption><\/figure>\n<table border=\"1\" style=\"border-collapse: collapse; width: 100%; text-align: left;\">\n<thead>\n<tr>\n<th style=\"padding: 10px;\">\u1021\u1004\u103a\u1039\u1002\u102b<\/th>\n<th style=\"padding: 10px;\">DC Isolator<\/th>\n<th style=\"padding: 10px;\">DC Circuit Breaker<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding: 10px;\"><strong>\u1021\u1013\u102d\u1000\u1021\u1001\u1014\u103a\u1038\u1000\u100f\u1039\u100d<\/strong><\/td>\n<td style=\"padding: 10px;\">Manual disconnection \u1014\u103e\u1004\u1037\u103a \u1015\u103c\u102f\u1015\u103c\u1004\u103a\u1011\u102d\u1014\u103a\u1038\u101e\u102d\u1019\u103a\u1038\u1019\u103e\u102f isolation<\/td>\n<td style=\"padding: 10px;\">Automatic overcurrent \u1014\u103e\u1004\u1037\u103a short-circuit protection<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Manual isolation<\/strong><\/td>\n<td style=\"padding: 10px;\">\u101f\u102f\u1010\u103a\u1000\u1032\u1037\u104a \u1024\u101e\u100a\u103a\u1019\u103e\u102c \u1021\u1013\u102d\u1000\u101b\u100a\u103a\u101b\u103d\u101a\u103a\u1001\u103b\u1000\u103a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b<\/td>\n<td style=\"padding: 10px;\">\u1010\u1005\u103a\u1001\u102b\u1010\u1005\u103a\u101b\u1036 \u1016\u103c\u1005\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c\u103a\u101c\u100a\u103a\u1038 \u104e\u1004\u103a\u1038\u1000\u102d\u102f \u101e\u1010\u103a\u1019\u103e\u1010\u103a\u101b\u1014\u103a \u1015\u1011\u1019\u1006\u102f\u1036\u1038\u1021\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1015\u103c\u1001\u103b\u1000\u103a\u1019\u101f\u102f\u1010\u103a\u1015\u102b\u104b<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Overcurrent \u1000\u102c\u1000\u103d\u101a\u103a\u1019\u103e\u102f<\/strong><\/td>\n<td style=\"padding: 10px;\">\u1010\u1005\u103a\u1001\u102f\u1019\u103e<\/td>\n<td style=\"padding: 10px;\">\u101f\u102f\u1010\u103a\u1000\u1032\u1037<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Isolation \u100a\u103d\u103e\u1014\u103a\u1015\u103c\u1001\u103b\u1000\u103a<\/strong><\/td>\n<td style=\"padding: 10px;\">\u1019\u103b\u102c\u1038\u101e\u1031\u102c\u1021\u102c\u1038\u1016\u103c\u1004\u1037\u103a \u101b\u103e\u1004\u103a\u1038\u101c\u1004\u103a\u1038\u1015\u103c\u1010\u103a\u101e\u102c\u1038\u101e\u1031\u102c switching position \u1014\u103e\u1004\u1037\u103a lockable service state \u1000\u102d\u102f \u1015\u1031\u1038\u101e\u100a\u103a\u104b<\/td>\n<td style=\"padding: 10px;\">Handle position \u101e\u100a\u103a \u101e\u102e\u1038\u101e\u1014\u1037\u103a isolator \u1000\u1032\u1037\u101e\u102d\u102f\u1037 \u1015\u103c\u102f\u1015\u103c\u1004\u103a\u1011\u102d\u1014\u103a\u1038\u101e\u102d\u1019\u103a\u1038\u1019\u103e\u102f \u101a\u102f\u1036\u1000\u103c\u100a\u103a\u1019\u103e\u102f\u1000\u102d\u102f \u1021\u1019\u103c\u1032\u1019\u1015\u1031\u1038\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u104b<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>Load breaking capability<\/strong><\/td>\n<td style=\"padding: 10px;\">switch-disconnector rating \u1014\u103e\u1004\u1037\u103a PV DC duty \u1015\u1031\u102b\u103a\u1010\u103d\u1004\u103a\u1019\u1030\u1010\u100a\u103a\u101e\u100a\u103a\u104b<\/td>\n<td style=\"padding: 10px;\">breaker \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1038\u104a DC rating \u1014\u103e\u1004\u1037\u103a interrupting duty \u1015\u1031\u102b\u103a\u1010\u103d\u1004\u103a\u1019\u1030\u1010\u100a\u103a\u101e\u100a\u103a\u104b<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>\u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1010\u103d\u1004\u103a \u1015\u102f\u1036\u1019\u103e\u1014\u103a\u1010\u100a\u103a\u1014\u1031\u101b\u102c<\/strong><\/td>\n<td style=\"padding: 10px;\">\u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u1011\u102c\u1038\u101e\u1031\u102c output \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a local disconnect point \u1010\u103d\u1004\u103a \u1019\u1000\u103c\u102c\u1001\u100f\u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/td>\n<td style=\"padding: 10px;\">\u1017\u102d\u101e\u102f\u1000\u102c\u1015\u1031\u102b\u103a\u1019\u1030\u1010\u100a\u103a\u104d string level, string-group level \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a combined-output protection point \u1010\u103d\u1004\u103a\u101b\u103e\u102d\u101e\u100a\u103a\u104b<\/td>\n<\/tr>\n<tr>\n<td style=\"padding: 10px;\"><strong>\u1014\u103e\u1005\u103a\u1001\u102f\u1005\u101c\u102f\u1036\u1038\u101c\u102d\u102f\u1021\u1015\u103a\u101e\u100a\u1037\u103a\u1021\u1001\u102b<\/strong><\/td>\n<td style=\"padding: 10px;\">\u101e\u1031\u1010\u1039\u1010\u102c\u101e\u100a\u103a \u101c\u102f\u1036\u1001\u103c\u102f\u1036\u101e\u1031\u102c manual isolation \u1014\u103e\u1004\u1037\u103a automatic fault protection \u1014\u103e\u1005\u103a\u1001\u102f\u1005\u101c\u102f\u1036\u1038\u101c\u102d\u102f\u1021\u1015\u103a\u101e\u100a\u1037\u103a\u1021\u1001\u102b<\/td>\n<td style=\"padding: 10px;\">\u1021\u1010\u1030\u1010\u1030<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u1021\u1013\u102d\u1000\u1021\u1001\u103b\u1000\u103a\u1019\u103e\u102c \u101b\u102d\u102f\u1038\u101b\u103e\u1004\u103a\u1038\u1015\u102b\u101e\u100a\u103a- isolator \u101e\u100a\u103a \u1021\u1013\u102d\u1000\u1021\u102c\u1038\u1016\u103c\u1004\u1037\u103a <strong>\u101c\u1030\u1019\u103b\u102c\u1038\u1014\u103e\u1004\u1037\u103a \u101d\u1014\u103a\u1006\u1031\u102c\u1004\u103a\u1019\u103e\u102f\u101c\u102f\u1015\u103a\u1004\u1014\u103a\u1038\u1021\u1010\u103d\u1000\u103a \u1011\u102d\u1014\u103a\u1038\u1001\u103b\u102f\u1015\u103a\u1011\u102c\u1038\u101e\u1031\u102c disconnection<\/strong>. \u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b breaker \u101e\u100a\u103a \u1021\u1013\u102d\u1000\u1021\u102c\u1038\u1016\u103c\u1004\u1037\u103a <strong>\u101c\u100a\u103a\u1015\u1010\u103a\u1014\u1031\u1005\u1009\u103a\u1021\u1010\u103d\u1004\u103a\u1038 \u1000\u102c\u1000\u103d\u101a\u103a\u101b\u1031\u1038\u1006\u102d\u102f\u1004\u103a\u101b\u102c \u1014\u103e\u1031\u102c\u1004\u1037\u103a\u101a\u103e\u1000\u103a\u1019\u103e\u102f<\/strong>.<\/p>\n<h2>\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b \u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1010\u1005\u103a\u1001\u102f\u101e\u100a\u103a \u1021\u1018\u101a\u103a\u1000\u103c\u1031\u102c\u1004\u1037\u103a \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1014\u103e\u1005\u103a\u1001\u102f\u1005\u101c\u102f\u1036\u1038\u1000\u102d\u102f \u1019\u1000\u103c\u102c\u1001\u100f\u101c\u102d\u102f\u1021\u1015\u103a\u101e\u1014\u100a\u103a\u1038\u104b<\/h2>\n<p>PV \u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u101e\u100a\u103a DC output \u1000\u102d\u102f inverter \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a \u1021\u1001\u103c\u102c\u1038\u1005\u102f\u1006\u1031\u102c\u1004\u103a\u1038\u101e\u100a\u1037\u103a\u1014\u1031\u101b\u102c\u101e\u102d\u102f\u1037 \u1019\u1015\u102d\u102f\u1037\u101c\u103d\u103e\u1010\u103a\u1019\u102e \u1000\u103c\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1005\u103d\u102c\u1000\u102d\u102f \u1005\u102f\u1005\u100a\u103a\u1038\u1015\u1031\u1038\u101e\u100a\u103a\u104b \u104e\u1004\u103a\u1038\u101e\u100a\u103a \u1019\u1010\u1030\u100a\u102e\u101e\u1031\u102c \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1038\u1019\u1031\u1038\u1001\u103d\u1014\u103a\u1038\u1014\u103e\u1005\u103a\u1001\u102f\u1000\u102d\u102f \u1016\u1014\u103a\u1010\u102e\u1038\u1015\u1031\u1038\u101e\u100a\u103a-<\/p>\n<h3>\u1015\u103c\u103f\u1014\u102c \u1041- Fault \u1014\u103e\u1004\u1037\u103a Reverse-Current \u1011\u102d\u1010\u103d\u1031\u1037\u1019\u103e\u102f<\/h3>\n<p>\u1000\u103c\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1005\u103d\u102c\u1000\u102d\u102f parallel \u1001\u103b\u102d\u1010\u103a\u1006\u1000\u103a\u1011\u102c\u1038\u101e\u1031\u102c\u1021\u1001\u102b\u104a faulted string \u101e\u100a\u103a \u1000\u103b\u1014\u103a\u1038\u1019\u102c\u101e\u1031\u102c\u1000\u103c\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1019\u103e reverse current \u1014\u103e\u1004\u1037\u103a \u1011\u102d\u1010\u103d\u1031\u1037\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b \u1011\u102d\u102f\u1037\u1000\u103c\u1031\u102c\u1004\u1037\u103a string \u1017\u102d\u101e\u102f\u1000\u102c\u1014\u103e\u1004\u1037\u103a code framework \u1000 \u101c\u102d\u102f\u1021\u1015\u103a\u101e\u100a\u103a\u1014\u103e\u1004\u1037\u103a\u1010\u1015\u103c\u102d\u102f\u1004\u103a\u1014\u1000\u103a overcurrent protection \u101e\u100a\u103a \u1019\u101b\u103e\u102d\u1019\u1016\u103c\u1005\u103a\u101c\u102d\u102f\u1021\u1015\u103a\u101c\u102c\u101e\u100a\u103a\u104b NEC-based \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1038\u1010\u103d\u1004\u103a\u104a \u1024\u1006\u103d\u1031\u1038\u1014\u103d\u1031\u1038\u1001\u103b\u1000\u103a\u101e\u100a\u103a <strong>690.9 Overcurrent Protection<\/strong>. \u1014\u103e\u1004\u1037\u103a \u1001\u103b\u102d\u1010\u103a\u1006\u1000\u103a\u1011\u102c\u1038\u101e\u100a\u103a\u104b IEC-based \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1038\u1010\u103d\u1004\u103a\u104a PV arrays \u1021\u1010\u103d\u1000\u103a source-circuit protection \u1005\u100a\u103a\u1038\u1019\u103b\u1009\u103a\u1038\u1019\u103b\u102c\u1038\u1010\u103d\u1004\u103a \u1010\u1030\u100a\u102e\u101e\u1031\u102c\u101a\u102f\u1010\u1039\u1010\u102d\u1017\u1031\u1012\u1000\u102d\u102f \u1010\u103d\u1031\u1037\u101b\u101e\u100a\u103a\u104b.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Technical-diagram-showing-per-string-protection-and-output-isolation-inside-a-solar-combiner-box.webp\" alt=\"Technical diagram showing per-string protection and output isolation inside a solar combiner box\" style=\"max-width: 100%; height: auto;\"><figcaption style=\"margin-top: 8px; color: #555;\"><i>Application diagram: reverse current \u1005\u102e\u1038\u1006\u1004\u103a\u1038\u1019\u103e\u102f\u104f fault scenario \u1000\u102d\u102f \u1019\u103c\u1004\u103a\u101a\u1031\u102c\u1004\u103a\u1001\u103c\u1004\u103a\u1038\u1014\u103e\u1004\u1037\u103a output isolation \u1014\u103e\u1004\u1037\u103a\u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u1011\u102c\u1038\u101e\u1031\u102c per-string protection \u101e\u100a\u103a \u1005\u1014\u1005\u103a\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u1000\u102c\u1000\u103d\u101a\u103a\u1015\u1031\u1038\u101e\u1014\u100a\u103a\u1038\u104b.<\/i><\/figcaption><\/figure>\n<p>\u1011\u102d\u102f overcurrent \u1021\u1001\u1014\u103a\u1038\u1000\u100f\u1039\u100d\u1000\u102d\u102f \u1024\u1021\u101b\u102c\u1019\u103b\u102c\u1038\u1016\u103c\u1004\u1037\u103a \u1000\u102d\u102f\u1004\u103a\u1010\u103d\u101a\u103a\u1016\u103c\u1031\u101b\u103e\u1004\u103a\u1038\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a-<\/p>\n<ul>\n<li>string fuses<\/li>\n<li>DC breakers \u1019\u103b\u102c\u1038<\/li>\n<li>\u1015\u101b\u1031\u102c\u1002\u103b\u1000\u103a\u1005\u1036\u1014\u103e\u102f\u1014\u103a\u1038\u1016\u103c\u1004\u1037\u103a \u101c\u1000\u103a\u1001\u1036\u1011\u102c\u1038\u101e\u1031\u102c \u1021\u1001\u103c\u102c\u1038\u1000\u102c\u1000\u103d\u101a\u103a\u101b\u1031\u1038\u1021\u1005\u102e\u1021\u1005\u1009\u103a<\/li>\n<\/ul>\n<p><strong>\u1021\u1005\u103d\u1014\u103a\u1021\u1016\u103b\u102c\u1038:<\/strong> NEC-style PV \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1038\u1010\u103d\u1004\u103a\u104a \u101c\u103b\u1004\u103a\u1019\u103c\u1014\u103a\u101e\u1031\u102c\u1021\u1004\u103a\u1002\u103b\u1004\u103a\u1014\u102e\u101a\u102c\u1005\u1005\u103a\u1006\u1031\u1038\u1019\u103e\u102f\u1019\u103e\u102c faulted circuit \u1011\u102d\u1010\u103d\u1031\u1037\u1019\u103e\u102f\u1000\u102d\u102f \u1000\u103b\u1014\u103a\u101b\u103e\u102d\u101e\u1031\u102c parallel \u1000\u103c\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1019\u103e\u101b\u101b\u103e\u102d\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c reverse current \u1014\u103e\u1004\u1037\u103a \u1014\u103e\u102d\u102f\u1004\u103a\u1038\u101a\u103e\u1009\u103a\u101b\u1014\u103a\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b 12-string \u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c\u1010\u103d\u1004\u103a\u104a faulted string \u101e\u100a\u103a \u1001\u1014\u1037\u103a\u1019\u103e\u1014\u103a\u1038\u1001\u103c\u1031\u1021\u102c\u1038\u1016\u103c\u1004\u1037\u103a <strong>11 x Isc<\/strong> \u1021\u1001\u103c\u102c\u1038\u1000\u103c\u102d\u102f\u1038\u1019\u103b\u102c\u1038\u1019\u103e \u1011\u102d\u1010\u103d\u1031\u1037\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b \u1011\u102d\u102f\u1037\u1000\u103c\u1031\u102c\u1004\u1037\u103a \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1014\u102c\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1000\u103c\u102d\u102f\u1038\u1010\u1005\u103a\u1001\u103b\u1031\u102c\u1004\u103a\u1038\u1010\u100a\u103a\u1038\u1000\u102d\u102f \u101e\u102e\u1038\u1001\u103c\u102c\u1038\u1000\u103c\u100a\u1037\u103a\u1001\u103c\u1004\u103a\u1038\u1016\u103c\u1004\u1037\u103a \u1000\u102c\u1000\u103d\u101a\u103a\u101b\u1031\u1038\u1021\u101b\u103d\u101a\u103a\u1021\u1005\u102c\u1038\u1000\u102d\u102f \u1019\u1006\u102f\u1036\u1038\u1016\u103c\u1010\u103a\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u104b.<\/p>\n<p>\u101e\u1004\u103a\u101e\u100a\u103a \u1015\u102d\u102f\u1019\u102d\u102f\u1000\u103b\u101a\u103a\u1015\u103c\u1014\u1037\u103a\u101e\u1031\u102c \u100a\u103e\u102d\u1014\u103e\u102d\u102f\u1004\u103a\u1038\u1019\u103e\u102f\u1015\u102f\u1036\u101b\u102d\u1015\u103a\u1000\u102d\u102f \u101c\u102d\u102f\u1001\u103b\u1004\u103a\u1015\u102b\u1000\u104a, <a href=\"https:\/\/test.viox.com\/my\/solar-combiner-box-protection-design\/\">\u1006\u102d\u102f\u101c\u102c\u1015\u1031\u102b\u1004\u103a\u1038\u1005\u1015\u103a\u101e\u1031\u1010\u1039\u1010\u102c \u1000\u102c\u1000\u103d\u101a\u103a\u101b\u1031\u1038\u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1038<\/a> \u101e\u100a\u103a \u1021\u1014\u102e\u1038\u1005\u1015\u103a\u1006\u102f\u1036\u1038 \u1021\u1011\u1031\u102c\u1000\u103a\u1021\u1015\u1036\u1037\u1015\u1031\u1038\u101e\u100a\u1037\u103a \u1005\u102c\u1019\u103b\u1000\u103a\u1014\u103e\u102c\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b.<\/p>\n<h3>\u1015\u103c\u103f\u1014\u102c \u1042- \u101d\u1014\u103a\u1006\u1031\u102c\u1004\u103a\u1019\u103e\u102f\u1021\u1010\u103d\u1000\u103a \u101c\u102f\u1036\u1001\u103c\u102f\u1036\u101e\u1031\u102c De-Energization<\/h3>\n<p>\u1000\u102c\u1000\u103d\u101a\u103a\u101b\u1031\u1038\u1000\u102d\u101b\u102d\u101a\u102c\u1010\u1005\u103a\u1001\u102f \u101c\u100a\u103a\u1015\u1010\u103a\u1015\u103c\u102e\u1038\u1014\u1031\u102c\u1000\u103a\u1015\u1004\u103a\u104a \u1015\u103c\u102f\u1015\u103c\u1004\u103a\u1011\u102d\u1014\u103a\u1038\u101e\u102d\u1019\u103a\u1038\u101b\u1031\u1038\u101d\u1014\u103a\u1011\u1019\u103a\u1038\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1021\u101c\u102f\u1015\u103a\u1021\u1010\u103d\u1000\u103a \u101e\u1031\u1010\u1039\u1010\u102c\u1000\u102d\u102f \u101e\u102e\u1038\u1001\u103c\u102c\u1038\u1001\u103d\u1032\u1011\u102f\u1010\u103a\u101b\u1014\u103a \u101b\u100a\u103a\u101b\u103d\u101a\u103a\u1001\u103b\u1000\u103a\u101b\u103e\u102d\u101b\u103e\u102d \u1014\u100a\u103a\u1038\u101c\u1019\u103a\u1038\u1010\u1005\u103a\u1001\u102f \u101c\u102d\u102f\u1021\u1015\u103a\u1014\u1031\u101e\u1031\u1038\u101e\u100a\u103a\u104b \u1014\u1031\u101b\u1031\u102c\u1004\u103a\u1001\u103c\u100a\u103a\u101b\u101b\u103e\u102d\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u1037\u103a\u1021\u1001\u102b\u1010\u102d\u102f\u1004\u103a\u1038 \u1006\u102d\u102f\u101c\u102c module \u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1017\u102d\u102f\u1037\u1021\u102c\u1038\u1000\u102d\u102f \u1006\u1000\u103a\u101c\u1000\u103a\u1011\u102f\u1010\u103a\u101c\u102f\u1015\u103a\u1014\u1031\u101e\u100a\u103a\u104b \u1006\u102d\u102f\u101c\u102d\u102f\u101e\u100a\u103a\u1019\u103e\u102c \u101d\u1014\u103a\u1006\u1031\u102c\u1004\u103a\u1019\u103e\u102f\u101c\u102f\u1015\u103a\u1011\u102f\u1036\u1038\u101c\u102f\u1015\u103a\u1014\u100a\u103a\u1038\u101e\u100a\u103a trip event \u1010\u1005\u103a\u1001\u102f\u1010\u100a\u103a\u1038\u1019\u101f\u102f\u1010\u103a\u1018\u1032 \u101e\u1004\u1037\u103a\u101c\u103b\u1031\u102c\u103a\u101e\u1031\u102c disconnecting means \u1010\u1005\u103a\u1001\u102f \u101c\u102d\u102f\u1021\u1015\u103a\u1014\u1031\u101e\u1031\u1038\u101e\u100a\u103a\u104b.<\/p>\n<p>In U.S. practice, that is tied to <strong>NEC 690.13<\/strong> and related disconnecting-means requirements. In IEC-based projects, the same expectation shows up through PV isolation requirements such as <strong>IEC 60364-7-712<\/strong>. In Australia and New Zealand, <strong>AS\/NZS 5033<\/strong> is even more explicit about the role and placement of PV DC isolators.<\/p>\n<p><strong>\u1021\u1005\u103d\u1014\u103a\u1021\u1016\u103b\u102c\u1038:<\/strong> Isolation selection should also follow the <strong>cold-corrected open-circuit voltage<\/strong>, not just the nominal system label. PV string voltage rises as module temperature falls, so an isolator selected too close to the STC Voc can be under-rated on cold mornings even though it looked acceptable on paper.<\/p>\n<p>The practical conclusion is that many combiner boxes need both:<\/p>\n<ul>\n<li>\u1010\u1005\u103a\u1001\u102f <strong>overcurrent-protection function<\/strong><\/li>\n<li>\u1010\u1005\u103a\u1001\u102f <strong>isolation \/ disconnect function<\/strong><\/li>\n<\/ul>\n<p>Those functions may sit in separate devices, or in some cases be satisfied by a suitably rated and accepted device arrangement. But they should not be treated as the same job.<\/p>\n<h2>How They Work Together in Practice<\/h2>\n<p>Consider a combiner box in a commercial or utility-scale PV installation with multiple strings entering a common bus.<\/p>\n<p>The overcurrent devices at string level or group level are there to limit fault exposure and keep one abnormal circuit from damaging the rest of the array wiring. The output isolator or disconnecting device is there so a technician can intentionally separate the combiner from the downstream run, lock the switch in a safe position where required, and work on the enclosure with a clearer service procedure.<\/p>\n<p>That separation is not redundant. It is what makes the box workable in the field.<\/p>\n<p>On projects where this distinction is handled well, technicians can:<\/p>\n<ul>\n<li>identify the faulted string or branch<\/li>\n<li>operate the protective and disconnecting devices in the right sequence<\/li>\n<li>isolate the box safely for service<\/li>\n<li>restore the healthy circuits with less confusion and less downtime<\/li>\n<\/ul>\n<h2>When a DC Isolator Function Is Mandatory<\/h2>\n<p>The careful wording matters here.<\/p>\n<p>Most codes do <strong>\u1019<\/strong> say that every project must use one exact product shape labeled \u201cisolator\u201d in every combiner box. What they require is a compliant <strong>disconnecting means<\/strong>.<\/p>\n<p>In practice, a dedicated DC isolator or switch-disconnector is often the most straightforward way to satisfy that duty when the project needs:<\/p>\n<ul>\n<li>a local maintenance disconnect at the combiner output<\/li>\n<li>a clearly marked service switching point<\/li>\n<li>a lockable open position<\/li>\n<li>a device selected mainly for disconnection duty rather than protective tripping<\/li>\n<\/ul>\n<p>This is why dedicated DC isolators remain common in PV combiner boxes even on systems that already include protective breakers or fuses. The deciding issue is usually not catalog preference. It is whether the maintenance team gets a clearer, safer, and more inspectable isolation point.<\/p>\n<p>If the reader needs the more device-specific background, the natural supporting pages are <a href=\"https:\/\/test.viox.com\/my\/dc-isolator-switch\/\">DC isolator switch<\/a> \u1014\u103e\u1004\u1037\u103a <a href=\"https:\/\/test.viox.com\/my\/what-is-a-dc-isolator-switch\/\">what is a DC isolator switch<\/a>.<\/p>\n<h2>When a DC Breaker Function Is Mandatory<\/h2>\n<p>Overcurrent protection is mandatory when the conductors or equipment are exposed to fault current beyond what the circuit can safely withstand.<\/p>\n<p>In PV combiner boxes, this becomes especially important when:<\/p>\n<ul>\n<li>three or more strings are paralleled under NEC logic<\/li>\n<li>the project specification calls for resettable overcurrent protection<\/li>\n<li>the output conductors require a protective device at the combiner<\/li>\n<li>the design needs a monitoring-friendly, resettable alternative to fuse-only protection<\/li>\n<\/ul>\n<p>The reason a DC breaker is specified is not that it has a handle. It is that the circuit needs <strong>automatic fault interruption<\/strong> under DC conditions.<\/p>\n<p>For a breaker-only deep dive, the most relevant supporting pages are <a href=\"https:\/\/test.viox.com\/my\/a-practical-guide-to-dc-circuit-breakers-for-solar-battery-and-ev-systems\/\">a practical guide to DC circuit breakers<\/a> \u1014\u103e\u1004\u1037\u103a <a href=\"https:\/\/test.viox.com\/my\/dc-circuit-breaker-sizing-nec-690-vs-iec-60947-2-guide\/\">DC circuit breaker sizing: NEC 690 vs IEC 60947-2<\/a>.<\/p>\n<h2>Can One Replace the Other?<\/h2>\n<p>Not by assumption.<\/p>\n<h3>A DC isolator does not replace a DC breaker when overcurrent protection is required<\/h3>\n<p>An isolator does not detect overcurrent, does not trip automatically, and should not be treated as the device that clears a developing fault simply because it can be opened manually.<\/p>\n<h3>A DC breaker does not automatically replace a dedicated isolator<\/h3>\n<p>A breaker may be accepted as a disconnecting means in some projects, but the designer still has to verify:<\/p>\n<ul>\n<li>listing and marking<\/li>\n<li>DC application suitability<\/li>\n<li>whether the open position can be clearly identified and locked where required<\/li>\n<li>whether the maintenance procedure remains safe and practical<\/li>\n<\/ul>\n<p>This is why the better engineering question is not \u201cwhich one wins?\u201d It is \u201cdoes this design still provide both protection and isolation in a way the code, the inspector, and the maintenance team will all accept?\u201d<\/p>\n<h2>Practical Selection Mistakes in PV Combiner Boxes<\/h2>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Technical-infographic-showing-common-DC-isolator-and-DC-breaker-selection-mistakes-in-solar-combiner-boxes.webp\" alt=\"Technical infographic showing common DC isolator and DC breaker selection mistakes in solar combiner boxes\" style=\"max-width: 100%; height: auto;\"><figcaption style=\"margin-top: 8px; color: #555;\"><i>PV combiner box safety: 4 common selection mistakes when specifying DC isolators and AC\/DC circuit breakers, highlighting the dangers of incorrect placement and under-rating.<\/i><\/figcaption><\/figure>\n<h3>1. Using AC-Rated Devices in a DC PV Circuit<\/h3>\n<p>This remains one of the most dangerous mistakes in the field. DC interruption is not the same as AC interruption. A device that is comfortable in an AC panel is not automatically suitable for a PV DC combiner box. In AC, the current passes through a natural zero-crossing every cycle, which helps the arc extinguish. In DC, there is no natural zero-crossing. If the device is not designed for DC arc control, the arc can sustain itself across opening contacts.<\/p>\n<p><strong>\u1021\u1000\u103b\u102d\u102f\u1038\u1006\u1000\u103a-<\/strong> the arc may not self-extinguish, the device can fail to interrupt, and the combiner enclosure can burn.<\/p>\n<h3>2. Treating String Breakers as the Whole Protection Strategy<\/h3>\n<p>\u1010\u1005\u103a\u1000\u103c\u1031\u102c\u1004\u103a\u1038\u1001\u103b\u1004\u103a\u1038\u1005\u102e\u101b\u103e\u102d\u101e\u1031\u102c circuit breaker \u1019\u103b\u102c\u1038\u101e\u100a\u103a disconnecting-means \u101c\u102d\u102f\u1021\u1015\u103a\u1001\u103b\u1000\u103a\u1000\u102d\u102f \u1021\u101c\u102d\u102f\u1021\u101c\u103b\u1031\u102c\u1000\u103a \u1019\u1016\u103c\u1031\u101b\u103e\u1004\u103a\u1038\u1014\u102d\u102f\u1004\u103a\u101e\u101c\u102d\u102f \u101e\u1014\u1037\u103a\u101b\u103e\u1004\u103a\u1038\u101e\u1031\u102c \u1015\u103c\u102f\u1015\u103c\u1004\u103a\u1011\u102d\u1014\u103a\u1038\u101e\u102d\u1019\u103a\u1038\u1019\u103e\u102f \u101c\u102f\u1015\u103a\u1004\u1014\u103a\u1038\u1005\u1009\u103a\u1000\u102d\u102f\u101c\u100a\u103a\u1038 \u1021\u101c\u102d\u102f\u1021\u101c\u103b\u1031\u102c\u1000\u103a \u1019\u1016\u1014\u103a\u1010\u102e\u1038\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u104b.<\/p>\n<p><strong>\u1021\u1000\u103b\u102d\u102f\u1038\u1006\u1000\u103a-<\/strong> \u1014\u100a\u103a\u1038\u1015\u100a\u102c\u101b\u103e\u1004\u103a\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u101d\u1014\u103a\u1021\u102c\u1038\u101b\u103e\u102d\u1014\u1031\u101e\u1031\u102c bus \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a \u101b\u103e\u102f\u1015\u103a\u1011\u103d\u1031\u1038\u101e\u1031\u102c shutdown sequence \u1000\u102d\u102f \u101d\u1014\u103a\u1006\u1031\u102c\u1004\u103a\u1019\u103e\u102f\u1015\u1031\u1038\u1014\u1031\u1005\u1009\u103a \u1000\u103c\u102f\u1036\u1010\u103d\u1031\u1037\u101b\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b.<\/p>\n<h3>Output Isolator \u1000\u102d\u102f Overcurrent Protection \u1000\u102d\u102f \u1016\u103c\u1031\u101b\u103e\u1004\u103a\u1038\u1015\u1031\u1038\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u101f\u102f \u1019\u103e\u1010\u103a\u101a\u1030\u1001\u103c\u1004\u103a\u1038<\/h3>\n<p>\u104e\u1004\u103a\u1038\u101e\u100a\u103a \u1019\u1016\u103c\u1031\u101b\u103e\u1004\u103a\u1038\u1014\u102d\u102f\u1004\u103a\u1015\u102b\u104b \u101e\u102e\u1038\u1001\u103c\u102c\u1038 disconnect point \u1014\u103e\u1004\u1037\u103a protective tripping function \u1010\u102d\u102f\u1037\u101e\u100a\u103a \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1038\u104f \u1019\u1010\u1030\u100a\u102e\u101e\u1031\u102c\u1021\u101c\u103d\u103e\u102c\u1019\u103b\u102c\u1038\u1016\u103c\u1005\u103a\u101e\u100a\u103a\u104b.<\/p>\n<p><strong>\u1021\u1000\u103b\u102d\u102f\u1038\u1006\u1000\u103a-<\/strong> conductor \u1019\u103b\u102c\u1038\u104a terminal \u1019\u103b\u102c\u1038 \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a enclosure \u1021\u1005\u102d\u1010\u103a\u1021\u1015\u102d\u102f\u1004\u103a\u1038\u1019\u103b\u102c\u1038 \u1021\u1015\u1030\u101c\u103d\u1014\u103a\u1000\u1032\u101e\u100a\u103a\u1021\u1011\u102d \u1001\u103b\u102d\u102f\u1037\u101a\u103d\u1004\u103a\u1038\u1001\u103b\u1000\u103a\u101e\u100a\u103a \u1006\u1000\u103a\u101c\u1000\u103a\u1010\u100a\u103a\u101b\u103e\u102d\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b.<\/p>\n<h3>Ampere Rating \u1016\u103c\u1004\u1037\u103a\u101e\u102c \u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1001\u103c\u1004\u103a\u1038<\/h3>\n<p>PV combiner box \u1019\u103b\u102c\u1038\u1010\u103d\u1004\u103a voltage class, pole arrangement, DC utilization, interrupting duty, temperature behavior \u1014\u103e\u1004\u1037\u103a actual string architecture \u1021\u102c\u1038\u101c\u102f\u1036\u1038 \u1021\u101b\u1031\u1038\u1000\u103c\u102e\u1038\u1015\u102b\u101e\u100a\u103a\u104b.<\/p>\n<p><strong>\u1021\u1000\u103b\u102d\u102f\u1038\u1006\u1000\u103a-<\/strong> \u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1011\u102c\u1038\u101e\u1031\u102c device \u101e\u100a\u103a nameplate \u1015\u1031\u102b\u103a\u1010\u103d\u1004\u103a \u1019\u103e\u1014\u103a\u1000\u1014\u103a\u1015\u102f\u1036\u1015\u1031\u102b\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c\u103a\u101c\u100a\u103a\u1038 \u1021\u1019\u103e\u1014\u103a\u1010\u1000\u101a\u103a PV duty \u1021\u1010\u103d\u1000\u103a \u1021\u1006\u1004\u1037\u103a\u1014\u102d\u1019\u1037\u103a\u1014\u1031\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b.<\/p>\n<h3>Disconnect \u1000\u102d\u102f \u1019\u103e\u102c\u1038\u101a\u103d\u1004\u103a\u1038\u101e\u1031\u102c\u1014\u1031\u101b\u102c\u1010\u103d\u1004\u103a \u1010\u1015\u103a\u1006\u1004\u103a\u1001\u103c\u1004\u103a\u1038<\/h3>\n<p>\u101b\u100a\u103a\u101b\u103d\u101a\u103a\u1001\u103b\u1000\u103a\u101e\u100a\u103a box \u1010\u1005\u103a\u1001\u102f\u101c\u102f\u1036\u1038 \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a downstream isolation \u1016\u103c\u1005\u103a\u1015\u102b\u1000\u104a disconnecting device \u1000\u102d\u102f \u1010\u1015\u103a\u1006\u1004\u103a\u1011\u102c\u1038\u101b\u1019\u100a\u1037\u103a\u1014\u1031\u101b\u102c\u101e\u100a\u103a circuit \u104f \u101b\u100a\u103a\u101b\u103d\u101a\u103a\u1011\u102c\u1038\u101e\u1031\u102c\u1021\u1015\u102d\u102f\u1004\u103a\u1038\u1000\u102d\u102f \u1021\u1019\u103e\u1014\u103a\u1010\u1000\u101a\u103a \u1001\u103d\u1032\u1011\u102f\u1010\u103a\u1014\u102d\u102f\u1004\u103a\u101b\u1019\u100a\u103a\u104b \u1019\u103e\u102c\u1038\u101a\u103d\u1004\u103a\u1038\u101e\u1031\u102c\u1014\u1031\u101b\u102c\u101b\u103e\u102d switch \u101e\u100a\u103a \u1015\u103c\u102f\u1015\u103c\u1004\u103a\u1011\u102d\u1014\u103a\u1038\u101e\u102d\u1019\u103a\u1038\u101b\u1031\u1038\u1021\u1016\u103d\u1032\u1037\u1019\u103e \u1006\u1014\u1037\u103a\u1000\u103b\u1004\u103a\u1018\u1000\u103a\u101f\u102f \u101a\u1030\u1006\u101e\u1031\u102c\u1021\u1001\u102b bus \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a downstream conductor \u1019\u103b\u102c\u1038\u1021\u102c\u1038 \u101d\u1014\u103a\u1021\u102c\u1038\u101b\u103e\u102d\u1014\u1031\u1005\u1031\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b.<\/p>\n<p><strong>\u1021\u1000\u103b\u102d\u102f\u1038\u1006\u1000\u103a-<\/strong> \u1005\u102c\u101b\u103d\u1000\u103a\u1015\u1031\u102b\u103a\u1010\u103d\u1004\u103a box \u101e\u100a\u103a isolated \u1016\u103c\u1005\u103a\u1015\u102f\u1036\u1015\u1031\u102b\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c\u103a\u101c\u100a\u103a\u1038 \u1021\u1014\u1039\u1010\u101b\u102c\u101a\u103a\u101b\u103e\u102d\u101e\u1031\u102c voltage \u101e\u100a\u103a field \u1010\u103d\u1004\u103a \u101b\u103e\u102d\u1014\u1031\u101e\u1031\u1038\u101e\u100a\u103a\u104b.<\/p>\n<h3>Project Basis \u1000\u102d\u102f \u1019\u1016\u1031\u102c\u103a\u1015\u103c\u1018\u1032 Code System \u1019\u103b\u102c\u1038\u1000\u102d\u102f \u101b\u1031\u102c\u1014\u103e\u1031\u102c\u1001\u103c\u1004\u103a\u1038<\/h3>\n<p>NEC, IEC \u1014\u103e\u1004\u1037\u103a AS\/NZS \u101c\u102d\u102f\u1021\u1015\u103a\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1015\u101b\u1031\u102c\u1002\u103b\u1000\u103a\u1000\u102d\u102f \u1021\u102f\u1015\u103a\u1001\u103b\u102f\u1015\u103a\u101e\u100a\u1037\u103a \u1005\u100a\u103a\u1038\u1019\u103b\u1009\u103a\u1038\u1021\u1005\u102f\u1000\u102d\u102f \u1019\u1016\u1031\u102c\u103a\u1015\u103c\u1018\u1032 \u1010\u1005\u103a\u1015\u103c\u102d\u102f\u1004\u103a\u1014\u1000\u103a \u1000\u102d\u102f\u1038\u1000\u102c\u1038\u101e\u1031\u102c\u1021\u1001\u102b \u1012\u102e\u1007\u102d\u102f\u1004\u103a\u1038\u1015\u103c\u1014\u103a\u101c\u100a\u103a\u101e\u102f\u1036\u1038\u101e\u1015\u103a\u1001\u103c\u1004\u103a\u1038\u101e\u100a\u103a \u1021\u101c\u103d\u1014\u103a\u101b\u103e\u102f\u1015\u103a\u1011\u103d\u1031\u1038\u101e\u103d\u102c\u1038\u101e\u100a\u103a\u104b \u1000\u1031\u102c\u1004\u103a\u1038\u1019\u103d\u1014\u103a\u101e\u1031\u102c \u1005\u102c\u101b\u103d\u1000\u103a\u1005\u102c\u1010\u1019\u103a\u1038\u1019\u103b\u102c\u1038\u101e\u100a\u103a \u1011\u102d\u102f\u1021\u1001\u103c\u1031\u1001\u1036\u1000\u102d\u102f \u1021\u1019\u103c\u1032\u101b\u103e\u1004\u103a\u1038\u101c\u1004\u103a\u1038\u1005\u1031\u101e\u100a\u103a\u104b.<\/p>\n<p><strong>\u1021\u1000\u103b\u102d\u102f\u1038\u1006\u1000\u103a-<\/strong> \u1021\u1016\u103d\u1032\u1037\u101e\u100a\u103a \u1019\u103e\u102c\u1038\u101a\u103d\u1004\u103a\u1038\u101e\u1031\u102c device set \u1000\u102d\u102f \u1021\u1010\u100a\u103a\u1015\u103c\u102f\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104a \u1005\u1005\u103a\u1006\u1031\u1038\u1001\u103c\u1004\u103a\u1038\u1010\u103d\u1004\u103a \u1000\u103b\u101b\u103e\u102f\u1036\u1038\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a \u101e\u102d\u102f\u1037\u1019\u101f\u102f\u1010\u103a \u1021\u102f\u1015\u103a\u1001\u103b\u102f\u1015\u103a\u101e\u100a\u1037\u103a\u1005\u1036\u1014\u103e\u102f\u1014\u103a\u1038\u1014\u103e\u1004\u1037\u103a \u1019\u1000\u102d\u102f\u1000\u103a\u100a\u102e\u101e\u1031\u102c \u1015\u103c\u102f\u1015\u103c\u1004\u103a\u1011\u102d\u1014\u103a\u1038\u101e\u102d\u1019\u103a\u1038\u1019\u103e\u102f \u101c\u102f\u1015\u103a\u1011\u102f\u1036\u1038\u101c\u102f\u1015\u103a\u1014\u100a\u103a\u1038\u1000\u102d\u102f \u1016\u1014\u103a\u1010\u102e\u1038\u1014\u102d\u102f\u1004\u103a\u101e\u100a\u103a\u104b.<\/p>\n<h2>\u1021\u1019\u103c\u1032\u1019\u1031\u1038\u101c\u1031\u1037\u101b\u103e\u102d\u101e\u1031\u102c\u1019\u1031\u1038\u1001\u103d\u1014\u103a\u1038\u1019\u103b\u102c\u1038<\/h2>\n<h3>Do I need both a DC isolator and a DC breaker in every combiner box?<\/h3>\n<p>\u1021\u1019\u103c\u1032\u1010\u1019\u103a\u1038 \u101e\u102e\u1038\u1001\u103c\u102c\u1038\u101b\u1015\u103a\u1010\u100a\u103a\u1014\u102d\u102f\u1004\u103a\u101e\u1031\u102c device \u1014\u103e\u1005\u103a\u1001\u102f\u1021\u1014\u1031\u1016\u103c\u1004\u1037\u103a \u1019\u101f\u102f\u1010\u103a\u101e\u1031\u102c\u103a\u101c\u100a\u103a\u1038 combiner box \u1021\u1019\u103b\u102c\u1038\u1021\u1015\u103c\u102c\u1038\u1010\u103d\u1004\u103a \u1014\u103e\u1005\u103a\u1001\u102f\u1005\u101c\u102f\u1036\u1038 \u101c\u102d\u102f\u1021\u1015\u103a\u1015\u102b\u101e\u100a\u103a\u104b <strong>\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038<\/strong>isolation \u1014\u103e\u1004\u1037\u103a overcurrent protection\u104b \u1011\u102d\u102f\u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1019\u103b\u102c\u1038\u1000\u102d\u102f \u1019\u100a\u103a\u101e\u102d\u102f\u1037\u1021\u1000\u1031\u102c\u1004\u103a\u1021\u1011\u100a\u103a\u1016\u1031\u102c\u103a\u101e\u100a\u103a\u1006\u102d\u102f\u101e\u100a\u103a\u1019\u103e\u102c \u1015\u101b\u1031\u102c\u1002\u103b\u1000\u103a code basis, string architecture \u1014\u103e\u1004\u1037\u103a device \u101e\u1004\u1037\u103a\u101c\u103b\u1031\u102c\u103a\u1019\u103e\u102f\u1021\u1015\u1031\u102b\u103a \u1019\u1030\u1010\u100a\u103a\u1015\u102b\u101e\u100a\u103a\u104b.<\/p>\n<h3>Can a DC breaker serve as the PV disconnecting means?<\/h3>\n<p>Sometimes yes, but only when its listing, marking, and installation details support that duty. Engineers should verify this instead of assuming every DC breaker is automatically a compliant isolator.<\/p>\n<h3>Can a DC isolator protect against overcurrent or short circuit?<\/h3>\n<p>No. A standard isolator is not an overcurrent protective device.<\/p>\n<h3>Are string breakers mandatory in every combiner box?<\/h3>\n<p>No. The need for string-level overcurrent protection depends on the number of parallel strings, conductor exposure, code framework, and equipment limits. In many projects, string fuses remain the more common solution.<\/p>\n<h3>What is the safest way to think about the difference?<\/h3>\n<p>isolator \u1000\u102d\u102f \u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1011\u102c\u1038\u101e\u1031\u102c device \u1021\u1016\u103c\u1005\u103a \u1019\u103e\u1010\u103a\u101a\u1030\u1015\u102b\u104b <strong>\u101b\u100a\u103a\u101b\u103d\u101a\u103a\u1001\u103b\u1000\u103a\u101b\u103e\u102d\u101b\u103e\u102d \u1016\u103c\u102f\u1010\u103a\u1010\u1031\u102c\u1000\u103a\u1001\u103c\u1004\u103a\u1038<\/strong> breaker \u1000\u102d\u102f \u101b\u103d\u1031\u1038\u1001\u103b\u101a\u103a\u1011\u102c\u1038\u101e\u1031\u102c device \u1021\u1016\u103c\u1005\u103a \u1019\u103e\u1010\u103a\u101a\u1030\u1015\u102b\u104b <strong>automatic fault interruption<\/strong>. \u1011\u102d\u102f\u1037\u1014\u1031\u102c\u1000\u103a \u1015\u101b\u1031\u102c\u1002\u103b\u1000\u103a\u101e\u100a\u103a \u101c\u102f\u1015\u103a\u1006\u1031\u102c\u1004\u103a\u1001\u103b\u1000\u103a\u1014\u103e\u1005\u103a\u1001\u102f\u1005\u101c\u102f\u1036\u1038\u1000\u102d\u102f \u101e\u102e\u1038\u1001\u103c\u102c\u1038\u101c\u102d\u102f\u1021\u1015\u103a\u101e\u1031\u1038\u101e\u101c\u102c\u1038 \u1005\u1005\u103a\u1006\u1031\u1038\u1015\u102b\u104b.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Inside a solar combiner box: A clear internal view showing DC circuit breakers used for string protection and a main output-side DC isolator for manual disconnection. Inside every solar combiner box, two types of DC switching devices show up repeatedly, and they are not interchangeable by default. A DC isolator is mainly there to provide [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15202,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-15201","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/posts\/15201","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/comments?post=15201"}],"version-history":[{"count":2,"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/posts\/15201\/revisions"}],"predecessor-version":[{"id":23344,"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/posts\/15201\/revisions\/23344"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/media\/15202"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/media?parent=15201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/categories?post=15201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/my\/wp-json\/wp\/v2\/tags?post=15201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}