{"id":19133,"date":"2025-08-12T00:23:56","date_gmt":"2025-08-11T16:23:56","guid":{"rendered":"https:\/\/viox.com\/?p=19133"},"modified":"2025-08-12T00:23:58","modified_gmt":"2025-08-11T16:23:58","slug":"how-to-read-mccb-nameplates-for-electrical-safety","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/how-to-read-mccb-nameplates-for-electrical-safety\/","title":{"rendered":"C\u00e1ch \u0110\u1ecdc Nh\u00e3n M\u00e1c MCCB \u0110\u1ec3 \u0110\u1ea3m B\u1ea3o An To\u00e0n \u0110i\u1ec7n"},"content":{"rendered":"<div class=\"product-intro\">\n<p><strong>\u0110\u1ecdc ch\u00ednh x\u00e1c nh\u00e3n MCCB bao g\u1ed3m vi\u1ec7c x\u00e1c \u0111\u1ecbnh 15 th\u00f4ng s\u1ed1 \u0111i\u1ec7n quan tr\u1ecdng bao g\u1ed3m d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c, \u0111i\u1ec7n \u00e1p, kh\u1ea3 n\u0103ng c\u1eaft v\u00e0 ch\u1ee9ng nh\u1eadn an to\u00e0n.<\/strong> H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n n\u00e0y d\u1ea1y b\u1ea1n c\u00e1ch di\u1ec5n gi\u1ea3i m\u1ecdi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n \u0111i\u1ec7n t\u1ed1i \u0111a v\u00e0 tu\u00e2n th\u1ee7 quy chu\u1ea9n.<\/p>\n<blockquote><p>dr. tr\u01b0\u1edbc <strong>C\u1ea2NH B\u00c1O AN TO\u00c0N<\/strong>: Lu\u00f4n t\u1eaft ngu\u1ed3n v\u00e0 tu\u00e2n theo quy tr\u00ecnh kh\u00f3a\/treo bi\u1ec3n b\u00e1o tr\u01b0\u1edbc khi ki\u1ec3m tra b\u1ea5t k\u1ef3 thi\u1ebft b\u1ecb \u0111i\u1ec7n n\u00e0o. Ch\u1ec9 nh\u1eefng th\u1ee3 \u0111i\u1ec7n c\u00f3 tr\u00ecnh \u0111\u1ed9 m\u1edbi \u0111\u01b0\u1ee3c l\u00e0m vi\u1ec7c v\u1edbi MCCB.<\/p><\/blockquote>\n<h2>Nh\u00e3n MCCB l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao n\u00f3 l\u1ea1i quan tr\u1ecdng?<\/h2>\n<div id='gallery-1' class='gallery galleryid-19133 gallery-columns-3 gallery-size-full'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/test.viox.com\/vi\/?attachment_id=5605'><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-250-3P-250A-AC400V_690V-Moulded-Case-Circuit-Breaker-MCCB.webp\" class=\"attachment-full size-full\" alt=\"VIOX VMM3-250 3P 250A AC400V\/690V Moulded Case Circuit Breaker (MCCB)\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-250-3P-250A-AC400V_690V-Moulded-Case-Circuit-Breaker-MCCB.webp 1024w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-250-3P-250A-AC400V_690V-Moulded-Case-Circuit-Breaker-MCCB-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-250-3P-250A-AC400V_690V-Moulded-Case-Circuit-Breaker-MCCB-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-250-3P-250A-AC400V_690V-Moulded-Case-Circuit-Breaker-MCCB-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-250-3P-250A-AC400V_690V-Moulded-Case-Circuit-Breaker-MCCB-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-250-3P-250A-AC400V_690V-Moulded-Case-Circuit-Breaker-MCCB-100x100.webp 100w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/test.viox.com\/vi\/?attachment_id=5607'><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-125-3P-150A-MCCB.webp\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-125-3P-150A-MCCB.webp 1024w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-125-3P-150A-MCCB-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-125-3P-150A-MCCB-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-125-3P-150A-MCCB-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-125-3P-150A-MCCB-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-125-3P-150A-MCCB-100x100.webp 100w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/test.viox.com\/vi\/molded-case-circuit-breakers-and-surge-protective-devices-a-comparative-analysis\/viox-vmm3-400-3p-400a-mccb01\/'><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-400-3P-400A-MCCB01.webp\" class=\"attachment-full size-full\" alt=\"\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-400-3P-400A-MCCB01.webp 1024w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-400-3P-400A-MCCB01-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-400-3P-400A-MCCB01-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-400-3P-400A-MCCB01-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-400-3P-400A-MCCB01-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2024\/09\/VIOX-VMM3-400-3P-400A-MCCB01-100x100.webp 100w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n<p>M\u1ed9t <a href=\"https:\/\/test.viox.com\/vi\/mccb\/\">MCCB (Molded Case Circuit Breaker - Aptomat v\u1ecf \u0111\u00fac)<\/a> Nh\u00e3n l\u00e0 m\u1ed9t nh\u00e3n v\u0129nh vi\u1ec5n ch\u1ee9a c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec7n quan tr\u1ecdng, x\u1ebfp h\u1ea1ng an to\u00e0n v\u00e0 ch\u1ee9ng nh\u1eadn tu\u00e2n th\u1ee7 theo y\u00eau c\u1ea7u c\u1ee7a \u0110i\u1ec1u 240 NEC v\u00e0 ti\u00eau chu\u1ea9n IEC 60947-2. Hi\u1ec3u c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y gi\u00fap ng\u0103n ng\u1eeba h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb, h\u1ecfa ho\u1ea1n \u0111i\u1ec7n v\u00e0 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 quy chu\u1ea9n.<\/p>\n<p><strong>L\u1ee3i \u00edch ch\u00ednh c\u1ee7a vi\u1ec7c \u0111\u1ecdc nh\u00e3n \u0111\u00fang c\u00e1ch:<\/strong><\/p>\n<ul>\n<li>Ng\u0103n ng\u1eeba c\u00e1c m\u1ed1i nguy hi\u1ec3m v\u1ec1 \u0111i\u1ec7n v\u00e0 h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb<\/li>\n<li>\u0110\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 quy chu\u1ea9n NEC v\u00e0 IEC<\/li>\n<li>Cho ph\u00e9p t\u00ednh to\u00e1n t\u1ea3i v\u00e0 bi\u00ean \u0111\u1ed9 an to\u00e0n th\u00edch h\u1ee3p<\/li>\n<li>T\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00e0 thay th\u1ebf thi\u1ebft b\u1ecb ch\u00ednh x\u00e1c<\/li>\n<\/ul>\n<h2>C\u00e1c th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu c\u1ee7a nh\u00e3n MCCB: Ph\u00e2n t\u00edch \u0111\u1ea7y \u0111\u1ee7<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-19137\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/08\/MCCB-Nameplates.webp\" alt=\"MCCB Nameplates\" width=\"741\" height=\"741\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/08\/MCCB-Nameplates.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/08\/MCCB-Nameplates-300x300.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/08\/MCCB-Nameplates-150x150.webp 150w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/08\/MCCB-Nameplates-768x768.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/08\/MCCB-Nameplates-12x12.webp 12w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/08\/MCCB-Nameplates-600x600.webp 600w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/08\/MCCB-Nameplates-100x100.webp 100w\" sizes=\"(max-width: 741px) 100vw, 741px\" \/><\/p>\n<h3>1. <strong>Th\u00f4ng tin v\u1ec1 th\u01b0\u01a1ng hi\u1ec7u v\u00e0 ki\u1ec3u m\u00e1y<\/strong><\/h3>\n<ul>\n<li><strong>M\u1ee5c \u0111\u00edch<\/strong>: X\u00e1c \u0111\u1ecbnh nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 d\u00f2ng s\u1ea3n ph\u1ea9m c\u1ee5 th\u1ec3<\/li>\n<li><strong>T\u00e1c \u0111\u1ed9ng an to\u00e0n<\/strong>: C\u1ea7n thi\u1ebft cho b\u1ea3o h\u00e0nh, ph\u1ee5 t\u00f9ng thay th\u1ebf v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt<\/li>\n<li><strong>V\u00ed d\u1ee5<\/strong>: \u201cVIOX SGM6sm-125H\u201d cho bi\u1ebft nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 k\u00fd hi\u1ec7u k\u00edch th\u01b0\u1edbc khung<\/li>\n<\/ul>\n<h3>2. <strong>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c (In)<\/strong><\/h3>\n<ul>\n<li><strong>\u0110\u1ecbnh ngh\u0129a<\/strong>: D\u00f2ng \u0111i\u1ec7n li\u00ean t\u1ee5c t\u1ed1i \u0111a m\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 mang m\u1ed9t c\u00e1ch an to\u00e0n<\/li>\n<li><strong>X\u1ebfp h\u1ea1ng ph\u1ed5 bi\u1ebfn<\/strong>: 15A, 20A, 30A, 50A, 100A, 125A, 250A, 400A, 600A<\/li>\n<li><strong>Y\u00eau c\u1ea7u an to\u00e0n<\/strong>: Ph\u1ea3i kh\u1edbp ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 d\u00f2ng \u0111i\u1ec7n t\u1ea3i \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n theo NEC 210.20<\/li>\n<li><strong>\u0110\u1ecbnh d\u1ea1ng \u0111\u00e1nh d\u1ea5u<\/strong>: \u201cIn = 125A\u201d ho\u1eb7c \u201c125A\u201d<\/li>\n<\/ul>\n<h3>3. <strong>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c (Ue\/V)<\/strong><\/h3>\n<ul>\n<li><strong>\u0110i\u1ec7n \u00e1p ti\u00eau chu\u1ea9n<\/strong>: 120V, 240V, 277V, 480V, 600V<\/li>\n<li><strong>Y\u1ebfu t\u1ed1 an to\u00e0n quan tr\u1ecdng<\/strong>: Kh\u00f4ng bao gi\u1edd v\u01b0\u1ee3t qu\u00e1 \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c n\u00e0y<\/li>\n<li><strong>Nhi\u1ec1u \u0111i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c<\/strong>: \u201c380\/400\/415V\u201d cho bi\u1ebft ph\u1ea1m vi ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c<\/li>\n<li><strong>M\u00e3 ph\u00f9 h\u1ee3p<\/strong>: Ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a \u0110i\u1ec1u 240.60 NEC<\/li>\n<\/ul>\n<h3>4. <strong>X\u1ebfp h\u1ea1ng kh\u1ea3 n\u0103ng ph\u00e1 v\u1ee1<\/strong><\/h3>\n<table>\n<tbody>\n<tr>\n<th>Lo\u1ea1i kh\u1ea3 n\u0103ng c\u1eaft<\/th>\n<th>Bi\u1ec3u t\u01b0\u1ee3ng<\/th>\n<th>M\u1ee5c \u0111\u00edch<\/th>\n<th>\u0110i\u1ec3n H\u00ecnh Gi\u00e1 Tr\u1ecb<\/th>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng c\u1eaft ng\u1eafn m\u1ea1ch gi\u1edbi h\u1ea1n \u0111\u1ecbnh m\u1ee9c<\/td>\n<td>Icu<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 t\u1ed1i \u0111a m\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 c\u1eaft m\u1ed9t c\u00e1ch an to\u00e0n<\/td>\n<td>10kA, 25kA, 35kA, 50kA, 85kA<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ea3 n\u0103ng c\u1eaft ng\u1eafn m\u1ea1ch ho\u1ea1t \u0111\u1ed9ng \u0111\u1ecbnh m\u1ee9c<\/td>\n<td>Ics<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 sau \u0111\u00f3 b\u1ed9 ng\u1eaft m\u1ea1ch v\u1eabn ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c<\/td>\n<td>Th\u01b0\u1eddng l\u00e0 50-100% Icu<\/td>\n<\/tr>\n<tr>\n<td>D\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch \u0111\u1ecbnh m\u1ee9c<\/td>\n<td>Icw<\/td>\n<td>D\u00f2ng \u0111i\u1ec7n m\u00e0 b\u1ed9 ng\u1eaft m\u1ea1ch c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c trong th\u1eddi gian quy \u0111\u1ecbnh<\/td>\n<td>10kA\/1s, 15kA\/1s<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote><p>dr. tr\u01b0\u1edbc <strong>L\u01afU \u00dd AN TO\u00c0N QUAN TR\u1eccNG<\/strong>: Kh\u1ea3 n\u0103ng c\u1eaft ph\u1ea3i v\u01b0\u1ee3t qu\u00e1 d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 c\u00f3 s\u1eb5n t\u1ea1i \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t. T\u00ednh to\u00e1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng d\u1eef li\u1ec7u m\u00e1y bi\u1ebfn \u00e1p ti\u1ec7n \u00edch v\u00e0 tr\u1edf kh\u00e1ng d\u00e2y d\u1eabn.<\/p><\/blockquote>\n<h3>5. <strong>X\u1ebfp h\u1ea1ng t\u1ea7n s\u1ed1 v\u00e0 nhi\u1ec7t \u0111\u1ed9<\/strong><\/h3>\n<ul>\n<li><strong>T\u1ea7n s\u1ed1 \u0111\u1ecbnh m\u1ee9c<\/strong>: Th\u00f4ng th\u01b0\u1eddng 50Hz ho\u1eb7c 60Hz, m\u1ed9t s\u1ed1 lo\u1ea1i c\u00f3 x\u1ebfp h\u1ea1ng k\u00e9p \u201c50\/60Hz\u201d<\/li>\n<li><strong>Nhi\u1ec7t \u0111\u1ed9 tham chi\u1ebfu<\/strong>: Th\u01b0\u1eddng l\u00e0 40\u00b0C m\u00f4i tr\u01b0\u1eddng xung quanh \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh nhi\u1ec7t<\/li>\n<li><strong>Gi\u1ea3m \u0111\u1ecbnh m\u1ee9c b\u1eaft bu\u1ed9c<\/strong>: Nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n y\u00eau c\u1ea7u gi\u1ea3m d\u00f2ng \u0111i\u1ec7n theo \u0111\u01b0\u1eddng cong c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/li>\n<\/ul>\n<h3>6. <strong>\u0110\u1eb7c t\u00ednh b\u1ea3o v\u1ec7 v\u00e0 \u0111\u01b0\u1eddng cong ng\u1eaft<\/strong><\/h3>\n<h4><strong>B\u1ea3o v\u1ec7 nhi\u1ec7t (Qu\u00e1 t\u1ea3i)<\/strong><\/h4>\n<ul>\n<li><strong>M\u1ee5c \u0111\u00edch<\/strong>: B\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i t\u00ecnh tr\u1ea1ng qu\u00e1 d\u00f2ng k\u00e9o d\u00e0i<\/li>\n<li><strong>Ph\u1ea1m vi \u0111i\u1ec1u ch\u1ec9nh<\/strong>: Th\u00f4ng th\u01b0\u1eddng t\u1eeb 0,8x \u0111\u1ebfn 1,0x d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c<\/li>\n<li><strong>M\u1ed1i quan h\u1ec7 th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n<\/strong>: \u0110\u1eb7c t\u00ednh th\u1eddi gian ngh\u1ecbch \u0111\u1ea3o<\/li>\n<\/ul>\n<h4><strong>B\u1ea3o v\u1ec7 t\u1eeb t\u00ednh (Ng\u1eafn m\u1ea1ch)<\/strong><\/h4>\n<ul>\n<li><strong>M\u1ee5c \u0111\u00edch<\/strong>: Cung c\u1ea5p b\u1ea3o v\u1ec7 t\u1ee9c th\u1eddi ch\u1ed1ng l\u1ea1i d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 cao<\/li>\n<li><strong>Ph\u1ea1m vi \u0111i\u1ec1u ch\u1ec9nh<\/strong>: Th\u01b0\u1eddng l\u00e0 5x \u0111\u1ebfn 10x d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c<\/li>\n<li><strong>Th\u1eddi gian ph\u1ea3n h\u1ed3i<\/strong>: Th\u00f4ng th\u01b0\u1eddng &lt;100ms<\/li>\n<\/ul>\n<p><strong>C\u00e1c lo\u1ea1i \u0111\u01b0\u1eddng cong ng\u1eaft ti\u00eau chu\u1ea9n:<\/strong><\/p>\n<ul>\n<li><strong>Lo\u1ea1i B<\/strong>: Ng\u1eaft t\u1eeb t\u00ednh 3-5x In (d\u00e2n d\u1ee5ng\/th\u01b0\u01a1ng m\u1ea1i nh\u1eb9)<\/li>\n<li><strong>Lo\u1ea1i C<\/strong>: G\u1ea5p 5-10 l\u1ea7n trong chuy\u1ebfn t\u1eeb (\u0111\u1ed9ng c\u01a1, m\u00e1y bi\u1ebfn \u00e1p)<\/li>\n<li><strong>Lo\u1ea1i D<\/strong>: G\u1ea5p 10-20 l\u1ea7n trong chuy\u1ebfn t\u1eeb (t\u1ea3i c\u00f3 d\u00f2ng kh\u1edfi \u0111\u1ed9ng cao)<\/li>\n<\/ul>\n<h3>7. <strong>C\u00e1c lo\u1ea1i s\u1eed d\u1ee5ng<\/strong><\/h3>\n<ul>\n<li><strong>Lo\u1ea1i A<\/strong>: Ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng tr\u1ec5 \u0111\u1ec3 b\u1ea3o v\u1ec7 s\u1ef1 c\u1ed1<\/li>\n<li><strong>Lo\u1ea1i B<\/strong>: Ho\u1ea1t \u0111\u1ed9ng tr\u1ec5 \u0111\u1ec3 ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft b\u1ecb h\u1ea1 ngu\u1ed3n<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng<\/strong>: Lo\u1ea1i A cho \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p, Lo\u1ea1i B cho \u0111\u01b0\u1eddng d\u00e2y ch\u00ednh c\u00f3 y\u00eau c\u1ea7u ch\u1ecdn l\u1ecdc<\/li>\n<\/ul>\n<h3>8. <strong>\u0110\u1ecbnh m\u1ee9c c\u00e1ch \u0111i\u1ec7n v\u00e0 xung<\/strong><\/h3>\n<ul>\n<li><strong>\u0110i\u1ec7n \u00e1p c\u00e1ch \u0111i\u1ec7n (Ui)<\/strong>: X\u00e1c \u0111\u1ecbnh kho\u1ea3ng c\u00e1ch t\u1ed1i thi\u1ec3u v\u00e0 kho\u1ea3ng c\u00e1ch r\u00f2<\/li>\n<li><strong>\u0110i\u1ec7n \u00e1p ch\u1ecbu xung (Uimp)<\/strong>: M\u1ee9c b\u1ea3o v\u1ec7 ch\u1ed1ng s\u00e9t\/qu\u00e1 \u0111i\u1ec7n \u00e1p chuy\u1ec3n m\u1ea1ch<\/li>\n<li><strong>Bi\u00ean \u0111\u1ed9 an to\u00e0n<\/strong>: Cung c\u1ea5p b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i qu\u00e1 \u0111i\u1ec7n \u00e1p v\u00e0 xung \u0111i\u1ec7n<\/li>\n<\/ul>\n<h2>C\u00e1ch \u0111\u1ecdc c\u00e1c \u0111\u1ecbnh d\u1ea1ng b\u1ea3ng t\u00ean MCCB kh\u00e1c nhau<\/h2>\n<h3><strong>\u0110\u1ecbnh d\u1ea1ng 1: B\u1ed1 c\u1ee5c ti\u00eau chu\u1ea9n IEC<\/strong><\/h3>\n<pre>Ue(V): 380\/400\/415V\n<\/pre>\n<h3><strong>\u0110\u1ecbnh d\u1ea1ng 2: Hi\u1ec3n th\u1ecb \u0111\u1ecbnh m\u1ee9c k\u1ebft h\u1ee3p<\/strong><\/h3>\n<pre>125A, 480V, 25kA\n<\/pre>\n<h3><strong>\u0110\u1ecbnh d\u1ea1ng 3: B\u1ea3ng k\u1ef9 thu\u1eadt to\u00e0n di\u1ec7n<\/strong><\/h3>\n<ul>\n<li>T\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng k\u00fd hi\u1ec7u v\u00e0 gi\u00e1 tr\u1ecb<\/li>\n<li>\u0110\u1eb7c t\u00ednh \u0111\u01b0\u1eddng cong ng\u1eaft \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb b\u1eb1ng \u0111\u1ed3 th\u1ecb<\/li>\n<li>Ph\u1ea1m vi \u0111i\u1ec1u ch\u1ec9nh \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u r\u00f5 r\u00e0ng<\/li>\n<\/ul>\n<h2>C\u00e1c ti\u00eau chu\u1ea9n v\u00e0 ch\u1ee9ng nh\u1eadn an to\u00e0n quan tr\u1ecdng<\/h2>\n<h3><strong>Ch\u1ee9ng nh\u1eadn b\u1eaft bu\u1ed9c tr\u00ean b\u1ea3ng t\u00ean<\/strong><\/h3>\n<table>\n<tbody>\n<tr>\n<th>Ch\u1ee9ng nh\u1eadn<\/th>\n<th>Chu\u1ea9n<\/th>\n<th>\u00dd ngh\u0129a<\/th>\n<th>\u00dd ngh\u0129a an to\u00e0n<\/th>\n<\/tr>\n<tr>\n<td>UL<\/td>\n<td>UL 489<\/td>\n<td>\u0110\u00e3 \u0111\u01b0\u1ee3c Underwriters Laboratories ki\u1ec3m tra<\/td>\n<td>B\u1eaft bu\u1ed9c \u0111\u1ec3 tu\u00e2n th\u1ee7 NEC \u1edf Hoa K\u1ef3<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ee9ng nh\u1eadn IEC<\/td>\n<td>TRUY\u1ec0N th\u00f4ng 60947-2<\/td>\n<td>\u1ee6y ban K\u1ef9 thu\u1eadt \u0110i\u1ec7n Qu\u1ed1c t\u1ebf<\/td>\n<td>Ti\u00eau chu\u1ea9n an to\u00e0n to\u00e0n c\u1ea7u<\/td>\n<\/tr>\n<tr>\n<td>CE Mark<\/td>\n<td>EN 60947-2<\/td>\n<td>S\u1ef1 ph\u00f9 h\u1ee3p c\u1ee7a Ch\u00e2u \u00c2u<\/td>\n<td>Tu\u00e2n th\u1ee7 th\u1ecb tr\u01b0\u1eddng Ch\u00e2u \u00c2u<\/td>\n<\/tr>\n<tr>\n<td>\u0110\u1ec0 ch\u1ea5p Thu\u1eadn<\/td>\n<td>CSA C22.2 S\u1ed1 5<\/td>\n<td>Hi\u1ec7p h\u1ed9i Ti\u00eau chu\u1ea9n Canada<\/td>\n<td>B\u1eaft bu\u1ed9c \u0111\u1ed1i v\u1edbi c\u00e1c c\u00f4ng tr\u00ecnh l\u1eafp \u0111\u1eb7t \u1edf Canada<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote><p>dr. tr\u01b0\u1edbc <strong>Y\u00caU C\u1ea6U AN TO\u00c0N<\/strong>: Ch\u1ec9 s\u1eed d\u1ee5ng MCCB \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn \u0111\u00e1p \u1ee9ng c\u00e1c quy t\u1eafc \u0111i\u1ec7n \u0111\u1ecba ph\u01b0\u01a1ng. Thi\u1ebft b\u1ecb ch\u01b0a \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn vi ph\u1ea1m \u0110i\u1ec1u 110.3(B) c\u1ee7a NEC.<\/p><\/blockquote>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-17468\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/06\/VIOX-MCB-MCCB-Factory-workshop06.webp\" alt=\"\" width=\"800\" height=\"450\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/06\/VIOX-MCB-MCCB-Factory-workshop06.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/06\/VIOX-MCB-MCCB-Factory-workshop06-300x169.webp 300w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/06\/VIOX-MCB-MCCB-Factory-workshop06-768x432.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/06\/VIOX-MCB-MCCB-Factory-workshop06-18x10.webp 18w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/06\/VIOX-MCB-MCCB-Factory-workshop06-600x338.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Quy tr\u00ecnh \u0111\u1ecdc b\u1ea3ng t\u00ean MCCB t\u1eebng b\u01b0\u1edbc<\/h2>\n<h3><strong>B\u01b0\u1edbc 1: An to\u00e0n h\u1ec7 th\u1ed1ng \u0111i\u1ec7n<\/strong><\/h3>\n<ol>\n<li>T\u1eaft ngu\u1ed3n \u0111i\u1ec7n th\u01b0\u1ee3ng ngu\u1ed3n<\/li>\n<li>X\u00e1c minh t\u00ecnh tr\u1ea1ng m\u1ea5t \u0111i\u1ec7n b\u1eb1ng m\u00e1y ki\u1ec3m tra \u0111i\u1ec7n \u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t<\/li>\n<li>\u00c1p d\u1ee5ng quy tr\u00ecnh kh\u00f3a\/g\u1eafn th\u1ebb theo OSHA 1910.147<\/li>\n<\/ol>\n<h3><strong>B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed v\u00e0 l\u00e0m s\u1ea1ch b\u1ea3ng t\u00ean<\/strong><\/h3>\n<ol>\n<li>T\u00ecm b\u1ea3ng t\u00ean v\u0129nh vi\u1ec5n (th\u01b0\u1eddng \u1edf m\u1eb7t tr\u01b0\u1edbc ho\u1eb7c m\u1eb7t b\u00ean)<\/li>\n<li>L\u00e0m s\u1ea1ch b\u1eb1ng v\u1ea3i kh\u00f4 n\u1ebfu b\u1ecb che khu\u1ea5t<\/li>\n<li>\u0110\u1ea3m b\u1ea3o \u0111\u1ee7 \u00e1nh s\u00e1ng \u0111\u1ec3 \u0111\u1ecdc ch\u1eef nh\u1ecf<\/li>\n<\/ol>\n<h3><strong>B\u01b0\u1edbc 3: Ghi l\u1ea1i c\u00e1c \u0111\u1ecbnh m\u1ee9c thi\u1ebft y\u1ebfu<\/strong><\/h3>\n<ol>\n<li><strong>\u0110\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n (In)<\/strong>: Th\u00f4ng s\u1ed1 \u0111\u1ecbnh c\u1ee1 ch\u00ednh<\/li>\n<li><strong>\u0110\u1ecbnh m\u1ee9c \u0111i\u1ec7n \u00e1p (Ue)<\/strong>: Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng<\/li>\n<li><strong>Kh\u1ea3 n\u0103ng c\u1eaft (Icu\/Ics)<\/strong>: Kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 s\u1ef1 c\u1ed1<\/li>\n<li><strong>Ch\u1ee9ng nh\u1eadn<\/strong>: X\u00e1c minh tu\u00e2n th\u1ee7 quy t\u1eafc<\/li>\n<\/ol>\n<h3><strong>B\u01b0\u1edbc 4: X\u00e1c minh kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a h\u1ec7 th\u1ed1ng<\/strong><\/h3>\n<ol>\n<li>So s\u00e1nh \u0111i\u1ec7n \u00e1p b\u1ea3ng t\u00ean v\u1edbi \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng<\/li>\n<li>X\u00e1c minh \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u t\u1ea3i<\/li>\n<li>X\u00e1c nh\u1eadn kh\u1ea3 n\u0103ng c\u1eaft v\u01b0\u1ee3t qu\u00e1 d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1 c\u00f3 s\u1eb5n<\/li>\n<li>Ki\u1ec3m tra \u0111\u1ecbnh m\u1ee9c t\u1ea7n s\u1ed1 ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec7n<\/li>\n<\/ol>\n<h3><strong>B\u01b0\u1edbc 5: T\u00e0i li\u1ec7u cho h\u1ed3 s\u01a1<\/strong><\/h3>\n<ol>\n<li>Ch\u1ee5p \u1ea3nh b\u1ea3ng t\u00ean \u0111\u1ec3 l\u01b0u h\u1ed3 s\u01a1 b\u1ea3o tr\u00ec<\/li>\n<li>Ghi l\u1ea1i trong c\u01a1 s\u1edf d\u1eef li\u1ec7u thi\u1ebft b\u1ecb<\/li>\n<li>L\u01b0u tr\u1eef v\u1edbi b\u1ea3n v\u1ebd v\u00e0 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111i\u1ec7n<\/li>\n<\/ol>\n<h2>C\u00e1c l\u1ed7i th\u01b0\u1eddng g\u1eb7p khi \u0111\u1ecdc b\u1ea3ng t\u00ean MCCB<\/h2>\n<h3><strong>Sai l\u1ea7m 1: Kh\u00f3 hi\u1ec3u Icu v\u00e0 \u0110\u00e1nh gi\u00e1 c\u1ee7a Ic<\/strong><\/h3>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1<\/strong>: S\u1eed d\u1ee5ng gi\u00e1 tr\u1ecb Ics \u0111\u1ec3 t\u00ednh to\u00e1n d\u00f2ng ng\u1eafn m\u1ea1ch<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p<\/strong>: Lu\u00f4n s\u1eed d\u1ee5ng Icu (kh\u1ea3 n\u0103ng c\u1eaft t\u1ed1i h\u1ea1n) cho c\u00e1c t\u00ednh to\u00e1n an to\u00e0n<\/li>\n<li><strong>Tham chi\u1ebfu quy chu\u1ea9n<\/strong>: NEC 240.60(C)<\/li>\n<\/ul>\n<h3><strong>L\u1ed7i 2: B\u1ecf qua vi\u1ec7c gi\u1ea3m \u0111\u1ecbnh m\u1ee9c theo nhi\u1ec7t \u0111\u1ed9<\/strong><\/h3>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1<\/strong>: V\u1eadn h\u00e0nh \u1edf d\u00f2ng \u0111\u1ecbnh m\u1ee9c t\u1ed1i \u0111a trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p<\/strong>: \u00c1p d\u1ee5ng c\u00e1c h\u1ec7 s\u1ed1 gi\u1ea3m \u0111\u1ecbnh m\u1ee9c theo d\u1eef li\u1ec7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/li>\n<li><strong>T\u00e1c \u0111\u1ed9ng an to\u00e0n<\/strong>: Ng\u0103n ng\u1eeba l\u00e3o h\u00f3a nhi\u1ec7t s\u1edbm<\/li>\n<\/ul>\n<h3><strong>L\u1ed7i 3: \u0110\u1ecdc sai d\u1ea3i \u0111i\u1ec7n \u00e1p<\/strong><\/h3>\n<ul>\n<li><strong>V\u1ea5n \u0111\u1ec1<\/strong>: Gi\u1ea3 \u0111\u1ecbnh \u201c380\/400\/415V\u201d c\u00f3 ngh\u0129a l\u00e0 b\u1ea5t k\u1ef3 \u0111i\u1ec7n \u00e1p n\u00e0o trong d\u1ea3i<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p<\/strong>: X\u00e1c minh \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng ch\u00ednh x\u00e1c n\u1eb1m trong d\u1ea3i quy \u0111\u1ecbnh<\/li>\n<li><strong>Y\u00eau c\u1ea7u quy chu\u1ea9n<\/strong>: NEC 240.60(A)<\/li>\n<\/ul>\n<h2>Ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn MCCB d\u1ef1a tr\u00ean d\u1eef li\u1ec7u b\u1ea3ng t\u00ean<\/h2>\n<h3><strong>L\u1ef1a ch\u1ecdn x\u1ebfp h\u1ea1ng hi\u1ec7n t\u1ea1i<\/strong><\/h3>\n<ul>\n<li><strong>T\u1ea3i li\u00ean t\u1ee5c<\/strong>: 125% d\u00f2ng t\u1ea3i theo NEC 210.20(A)<\/li>\n<li><strong>T\u1ea3i \u0111\u1ed9ng c\u01a1<\/strong>: Tu\u00e2n theo c\u00e1c quy t\u1eafc \u0111\u1ecbnh c\u1ee1 \u0110i\u1ec1u 430 c\u1ee7a NEC<\/li>\n<li><strong>Bi\u00ean \u0111\u1ed9 an to\u00e0n<\/strong>: T\u1ed1i thi\u1ec3u 25% tr\u00ean t\u1ea3i t\u00ednh to\u00e1n<\/li>\n<\/ul>\n<h3><strong>L\u1ef1a ch\u1ecdn \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec7n \u00e1p<\/strong><\/h3>\n<ul>\n<li><strong>Ph\u1ea3i b\u1eb1ng ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng<\/strong><\/li>\n<li><strong>Th\u00f4ng l\u1ec7 an to\u00e0n ph\u1ed5 bi\u1ebfn<\/strong>: Bi\u00ean \u0111\u1ed9 \u0111i\u1ec7n \u00e1p 20% cho qu\u00e1 \u0111\u1ed9 \u0111i\u1ec7n \u00e1p<\/li>\n<li><strong>\u1ee8ng d\u1ee5ng \u0111a \u0111i\u1ec7n \u00e1p<\/strong>: S\u1eed d\u1ee5ng \u0111\u1ecbnh m\u1ee9c \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng cao nh\u1ea5t<\/li>\n<\/ul>\n<h3><strong>L\u1ef1a ch\u1ecdn kh\u1ea3 n\u0103ng ph\u00e1 v\u1ee1<\/strong><\/h3>\n<ul>\n<li><strong>T\u00ednh to\u00e1n d\u00f2ng ng\u1eafn m\u1ea1ch kh\u1ea3 d\u1ee5ng<\/strong> t\u1ea1i \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t<\/li>\n<li><strong>Ch\u1ecdn \u0111\u1ecbnh m\u1ee9c Icu l\u1edbn h\u01a1n 25% so v\u1edbi d\u00f2ng ng\u1eafn m\u1ea1ch \u0111\u00e3 t\u00ednh to\u00e1n<\/strong><\/li>\n<li><strong>Xem x\u00e9t n\u00e2ng c\u1ea5p h\u1ec7 th\u1ed1ng trong t\u01b0\u01a1ng lai<\/strong> c\u00f3 th\u1ec3 l\u00e0m t\u0103ng m\u1ee9c ng\u1eafn m\u1ea1ch<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-16689\" src=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/MCCBs-IN-panel.webp\" alt=\"MCCBs IN panel\" width=\"800\" height=\"1110\" srcset=\"https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/MCCBs-IN-panel.webp 800w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/MCCBs-IN-panel-216x300.webp 216w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/MCCBs-IN-panel-738x1024.webp 738w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/MCCBs-IN-panel-768x1066.webp 768w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/MCCBs-IN-panel-9x12.webp 9w, https:\/\/test.viox.com\/wp-content\/uploads\/2025\/05\/MCCBs-IN-panel-600x833.webp 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>L\u1eafp \u0111\u1eb7t chuy\u00ean nghi\u1ec7p v\u00e0 tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh<\/h2>\n<h3><strong>C\u00e1c y\u00eau c\u1ea7u c\u1ee7a NEC \u0111\u1ed1i v\u1edbi vi\u1ec7c l\u1eafp \u0111\u1eb7t MCCB<\/strong><\/h3>\n<ul>\n<li><strong>\u0110i\u1ec1u 240.60<\/strong>: \u0110\u1ecbnh m\u1ee9c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng<\/li>\n<li><strong>\u0110i\u1ec1u 240.83<\/strong>: Y\u00eau c\u1ea7u v\u1ec1 ghi nh\u00e3n<\/li>\n<li><strong>\u0110i\u1ec1u 110.3(B)<\/strong>: Y\u00eau c\u1ea7u v\u1ec1 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea<\/li>\n<li><strong>\u0110i\u1ec1u 110.14(C)<\/strong>: Gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9<\/li>\n<\/ul>\n<h3><strong>Khi \u0111\u1ec3 tham Kh\u1ea3o \u00fd ki\u1ebfn m\u1ed9t Chuy\u00ean nghi\u1ec7p<\/strong><\/h3>\n<ul>\n<li><strong>T\u00ednh to\u00e1n d\u00f2ng \u0111i\u1ec7n l\u1ed7i<\/strong> y\u00eau c\u1ea7u ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt<\/li>\n<li><strong>Nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p<\/strong> c\u1ea7n ph\u1ea7n m\u1ec1m chuy\u00ean d\u1ee5ng<\/li>\n<li><strong>Gi\u1ea3i th\u00edch quy chu\u1ea9n<\/strong> c\u00f3 th\u1ec3 y\u00eau c\u1ea7u t\u01b0 v\u1ea5n AHJ<\/li>\n<li><strong>S\u1eeda \u0111\u1ed5i h\u1ec7 th\u1ed1ng<\/strong> \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ecbnh m\u1ee9c an to\u00e0n<\/li>\n<\/ul>\n<h2>B\u1ea3ng gi\u1ea3i m\u00e3 nhanh th\u00f4ng tin tr\u00ean nh\u00e3n<\/h2>\n<h3><strong>Danh s\u00e1ch ki\u1ec3m tra th\u00f4ng tin thi\u1ebft y\u1ebfu<\/strong><\/h3>\n<ul>\n<li>\u2705 D\u00f2ng \u0111\u1ecbnh m\u1ee9c (In) \u2013 ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u t\u1ea3i<\/li>\n<li>\u2705 \u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c (Ue) \u2013 b\u1eb1ng ho\u1eb7c v\u01b0\u1ee3t qu\u00e1 \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng<\/li>\n<li>\u2705 Kh\u1ea3 n\u0103ng c\u1eaft (Icu) \u2013 v\u01b0\u1ee3t qu\u00e1 d\u00f2ng ng\u1eafn m\u1ea1ch kh\u1ea3 d\u1ee5ng<\/li>\n<li>\u2705 \u0110\u1ecbnh m\u1ee9c t\u1ea7n s\u1ed1 \u2013 ph\u00f9 h\u1ee3p v\u1edbi t\u1ea7n s\u1ed1 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n<\/li>\n<li>\u2705 Ch\u1ee9ng nh\u1eadn \u2013 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u quy chu\u1ea9n \u0111\u1ecba ph\u01b0\u01a1ng<\/li>\n<li>\u2705 Lo\u1ea1i \u0111\u01b0\u1eddng cong \u0111\u1eb7c t\u00ednh c\u1eaft \u2013 ph\u00f9 h\u1ee3p v\u1edbi \u1ee9ng d\u1ee5ng<\/li>\n<li>\u2705 \u0110\u1ecbnh m\u1ee9c nhi\u1ec7t \u0111\u1ed9 \u2013 ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng<\/li>\n<\/ul>\n<h3><strong>C\u00e1c d\u1ea5u hi\u1ec7u c\u1ea3nh b\u00e1o nguy hi\u1ec3m<\/strong><\/h3>\n<ul>\n<li>\ud83d\udea8 <strong>Nh\u00e3n b\u1ecb thi\u1ebfu ho\u1eb7c h\u01b0 h\u1ecfng<\/strong><\/li>\n<li>\ud83d\udea8 <strong>Thi\u1ebft b\u1ecb kh\u00f4ng \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn (kh\u00f4ng c\u00f3 d\u1ea5u UL, IEC ho\u1eb7c CSA)<\/strong><\/li>\n<li>\ud83d\udea8 <strong>\u0110\u1ecbnh m\u1ee9c th\u1ea5p h\u01a1n y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng<\/strong><\/li>\n<li>\ud83d\udea8 <strong>B\u1eb1ng ch\u1ee9ng v\u1ec1 qu\u00e1 nhi\u1ec7t ho\u1eb7c ph\u00f3ng h\u1ed3 quang<\/strong><\/li>\n<li>\ud83d\udea8 <strong>D\u1ea5u hi\u1ec7u s\u1eeda \u0111\u1ed5i ho\u1eb7c can thi\u1ec7p<\/strong><\/li>\n<\/ul>\n<h2>Nh\u1eefng C\u00e2u H\u1ecfi Th\u01b0\u1eddng<\/h2>\n<h3><strong>\u201c125A\/1P\u201d tr\u00ean nh\u00e3n MCCB c\u00f3 ngh\u0129a l\u00e0 g\u00ec?<\/strong><\/h3>\n<p>\u0110i\u1ec1u n\u00e0y ch\u1ec9 ra d\u00f2ng \u0111\u1ecbnh m\u1ee9c 125 ampe cho m\u1ed9t b\u1ed9 ng\u1eaft m\u1ea1ch m\u1ed9t c\u1ef1c (1P). K\u00fd hi\u1ec7u \u201c1P\u201d c\u00f3 ngh\u0129a l\u00e0 n\u00f3 b\u1ea3o v\u1ec7 m\u1ed9t pha c\u1ee7a m\u1ea1ch, ph\u1ed5 bi\u1ebfn trong c\u00e1c \u1ee9ng d\u1ee5ng m\u1ed9t pha 120V ho\u1eb7c 240V.<\/p>\n<h3><strong>L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 bi\u1ebft kh\u1ea3 n\u0103ng c\u1eaft c\u1ee7a MCCB c\u00f3 \u0111\u1ee7 kh\u00f4ng?<\/strong><\/h3>\n<p>T\u00ednh to\u00e1n d\u00f2ng ng\u1eafn m\u1ea1ch kh\u1ea3 d\u1ee5ng t\u1ea1i \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t c\u1ee7a b\u1ea1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng d\u1eef li\u1ec7u m\u00e1y bi\u1ebfn \u00e1p c\u1ee7a ti\u1ec7n \u00edch v\u00e0 tr\u1edf kh\u00e1ng d\u00e2y d\u1eabn. \u0110\u1ecbnh m\u1ee9c Icu c\u1ee7a MCCB c\u1ee7a b\u1ea1n ph\u1ea3i v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb \u0111\u00e3 t\u00ednh n\u00e0y \u00edt nh\u1ea5t 25% \u0111\u1ec3 c\u00f3 bi\u00ean \u0111\u1ed9 an to\u00e0n.<\/p>\n<h3><strong>T\u00f4i n\u00ean l\u00e0m g\u00ec n\u1ebfu nh\u00e3n kh\u00f4ng \u0111\u1ecdc \u0111\u01b0\u1ee3c?<\/strong><\/h3>\n<p>Kh\u00f4ng bao gi\u1edd \u0111o\u00e1n \u0111\u1ecbnh m\u1ee9c. Li\u00ean h\u1ec7 v\u1edbi nh\u00e0 s\u1ea3n xu\u1ea5t v\u1edbi s\u1ed1 ki\u1ec3u m\u00e1y \u0111\u1ec3 c\u00f3 b\u1ea3ng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ho\u1eb7c thay th\u1ebf b\u1ed9 ng\u1eaft m\u1ea1ch b\u1eb1ng thi\u1ebft b\u1ecb c\u00f3 \u0111\u1ecbnh m\u1ee9c ph\u00f9 h\u1ee3p. V\u1eadn h\u00e0nh v\u1edbi \u0111\u1ecbnh m\u1ee9c kh\u00f4ng x\u00e1c \u0111\u1ecbnh vi ph\u1ea1m c\u00e1c quy t\u1eafc v\u1ec1 \u0111i\u1ec7n v\u00e0 g\u00e2y ra c\u00e1c nguy c\u01a1 v\u1ec1 an to\u00e0n.<\/p>\n<h3><strong>T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng MCCB c\u00f3 \u0111\u1ecbnh m\u1ee9c cao h\u01a1n y\u00eau c\u1ea7u kh\u00f4ng?<\/strong><\/h3>\n<p>C\u00f3, vi\u1ec7c s\u1eed d\u1ee5ng \u0111i\u1ec7n \u00e1p ho\u1eb7c d\u00f2ng c\u1eaft \u0111\u1ecbnh m\u1ee9c cao h\u01a1n l\u00e0 an to\u00e0n v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u theo quy \u0111\u1ecbnh. Tuy nhi\u00ean, h\u00e3y \u0111\u1ea3m b\u1ea3o d\u00f2ng \u0111\u1ecbnh m\u1ee9c ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u t\u1ea3i c\u1ee7a b\u1ea1n \u2013 d\u00f2ng \u0111\u1ecbnh m\u1ee9c qu\u00e1 l\u1edbn s\u1ebd kh\u00f4ng cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i th\u00edch h\u1ee3p.<\/p>\n<h3><strong>Nhi\u1ec7t \u0111\u1ed9 tham chi\u1ebfu \u201c40\u00b0C\u201d c\u00f3 ngh\u0129a l\u00e0 g\u00ec?<\/strong><\/h3>\n<p>\u0110i\u1ec1u n\u00e0y ch\u1ec9 ra nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng m\u00e0 t\u1ea1i \u0111\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh ng\u1eaft nhi\u1ec7t \u0111\u01b0\u1ee3c hi\u1ec7u ch\u1ec9nh. \u1ede nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n, b\u1ea1n ph\u1ea3i gi\u1ea3m \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n theo c\u00e1c h\u1ec7 s\u1ed1 \u0111i\u1ec1u ch\u1ec9nh c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ec3 tr\u00e1nh ng\u1eaft m\u1ea1ch kh\u00f4ng c\u1ea7n thi\u1ebft.<\/p>\n<h3><strong>T\u00f4i n\u00ean ki\u1ec3m tra th\u00f4ng tin tr\u00ean nh\u00e3n bao l\u00e2u m\u1ed9t l\u1ea7n?<\/strong><\/h3>\n<p>Ki\u1ec3m tra nh\u00e3n trong qu\u00e1 tr\u00ecnh b\u1ea3o tr\u00ec \u0111i\u1ec7n h\u00e0ng n\u0103m, sau b\u1ea5t k\u1ef3 c\u00f4ng vi\u1ec7c \u0111i\u1ec7n n\u00e0o v\u00e0 khi kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 b\u1ea3o v\u1ec7. Ghi l\u1ea1i c\u00e1c \u0111\u1ecbnh m\u1ee9c trong h\u1ed3 s\u01a1 b\u1ea3o tr\u00ec \u0111i\u1ec7n c\u1ee7a b\u1ea1n \u0111\u1ec3 tham kh\u1ea3o trong t\u01b0\u01a1ng lai.<\/p>\n<h2>Li\u00ean quan<\/h2>\n<p><a href=\"https:\/\/test.viox.com\/vi\/mccb-full-form-molded-case-circuit-breaker\/\">D\u1ea1ng \u0110\u1ea7y \u0110\u1ee7 C\u1ee7a MCCB: Molded Case Circuit Breaker (Aptomat v\u1ecf \u0111\u00fac)<\/a><\/p>\n<p><a href=\"https:\/\/test.viox.com\/vi\/what-is-a-molded-case-circuit-breaker-mccb\/\">C\u1ea7u dao \u0111i\u1ec7n v\u1ecf \u0111\u00fac (MCCB) l\u00e0 g\u00ec?<\/a><\/p>\n<p><a href=\"https:\/\/test.viox.com\/vi\/what-is-the-difference-between-mcb-mccb-rcb-rcd-rccb-and-rcbo\/\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa MCB, MCCB, RCB, RCD, RCCB v\u00e0 RCBO l\u00e0 g\u00ec? Ho\u00e0n th\u00e0nh n\u0103m 2025<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Reading an MCCB nameplate correctly involves identifying 15 critical electrical parameters including rated current, voltage, breaking capacity, and safety certifications. This comprehensive guide teaches you to interpret every specification for maximum electrical safety and code compliance. \u26a0\ufe0f SAFETY WARNING: Always turn off power and follow lockout\/tagout procedures before examining any electrical equipment. Only qualified electricians [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":19138,"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-19133","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/19133","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/comments?post=19133"}],"version-history":[{"count":0,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/19133\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/19138"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=19133"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=19133"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=19133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}