{"id":7027,"date":"2026-09-29T14:50:40","date_gmt":"2026-09-29T07:50:40","guid":{"rendered":"https:\/\/sunnysolar.vn\/?p=7027"},"modified":"2026-09-29T14:50:40","modified_gmt":"2026-09-29T07:50:40","slug":"phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb","status":"publish","type":"post","link":"https:\/\/sunnysolar.vn\/en\/phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb\/","title":{"rendered":"Ph\u00e2n Bi\u1ec7t MCB, MCCB, RCB, RCD, RCCB, RCBO V\u00e0 ELCB"},"content":{"rendered":"<h1>Ph\u00e2n Bi\u1ec7t MCB, MCCB, RCB, RCD, RCCB, RCBO V\u00e0 ELCB \u2013 N\u00ean D\u00f9ng Lo\u1ea1i N\u00e0o?<\/h1>\n<div>\n<hr \/>\n<\/div>\n<h2>1. MCB, MCCB, RCD, RCCB, RCBO v\u00e0 ELCB l\u00e0 g\u00ec?<\/h2>\n<p>Trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng, th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p, c\u00e1c thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft v\u00e0 b\u1ea3o v\u1ec7 nh\u01b0 <strong>MCB, MCCB, RCD, RCCB, RCBO v\u00e0 ELCB<\/strong> \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c b\u1ea3o v\u1ec7 d\u00e2y d\u1eabn, thi\u1ebft b\u1ecb \u0111i\u1ec7n v\u00e0 con ng\u01b0\u1eddi.<\/p>\n<p>Tuy nhi\u00ean, m\u1ed7i thi\u1ebft b\u1ecb c\u00f3 ch\u1ee9c n\u0103ng kh\u00e1c nhau. C\u00f3 lo\u1ea1i ch\u1ee7 y\u1ebfu b\u1ea3o v\u1ec7 <strong>qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch<\/strong>, trong khi lo\u1ea1i kh\u00e1c chuy\u00ean ph\u00e1t hi\u1ec7n <strong>d\u00f2ng \u0111i\u1ec7n r\u00f2<\/strong>, gi\u00fap gi\u1ea3m nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt v\u00e0 ch\u00e1y do r\u00f2 \u0111i\u1ec7n.<\/p>\n<p>\u0110\u1eb7c bi\u1ec7t, c\u00e1c thu\u1eadt ng\u1eef <strong>RCD, RCCB, RCBO v\u00e0 ELCB<\/strong> th\u01b0\u1eddng b\u1ecb g\u1ecdi chung l\u00e0 \u201cCB ch\u1ed1ng gi\u1eadt\u201d, d\u1eabn \u0111\u1ebfn nh\u1ea7m l\u1eabn khi l\u1ef1a ch\u1ecdn.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>2. MCB l\u00e0 g\u00ec?<\/h1>\n<p><strong>MCB \u2013 Miniature Circuit Breaker<\/strong> l\u00e0 aptomat d\u1ea1ng t\u00e9p th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c m\u1ea1ch \u0111i\u1ec7n c\u00f3 d\u00f2ng \u0111i\u1ec7n t\u01b0\u01a1ng \u0111\u1ed1i nh\u1ecf.<\/p>\n<p>MCB c\u00f3 hai ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 ch\u00ednh:<\/p>\n<ul>\n<li><strong>Qu\u00e1 t\u1ea3i:<\/strong> d\u00f2ng \u0111i\u1ec7n v\u01b0\u1ee3t m\u1ee9c cho ph\u00e9p trong m\u1ed9t kho\u1ea3ng th\u1eddi gian.<\/li>\n<li><strong>Ng\u1eafn m\u1ea1ch:<\/strong> d\u00f2ng \u0111i\u1ec7n t\u0103ng \u0111\u1ed9t bi\u1ebfn r\u1ea5t l\u1edbn do s\u1ef1 c\u1ed1 ch\u1eadp \u0111i\u1ec7n.<\/li>\n<\/ul>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a MCB<\/h3>\n<p>MCB th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong:<\/p>\n<ul>\n<li>H\u1ec7 th\u1ed1ng \u0111i\u1ec7n gia \u0111\u00ecnh<\/li>\n<li>Chi\u1ebfu s\u00e1ng<\/li>\n<li>\u1ed4 c\u1eafm \u0111i\u1ec7n<\/li>\n<li>M\u00e1y \u0111i\u1ec1u h\u00f2a<\/li>\n<li>B\u00ecnh n\u01b0\u1edbc n\u00f3ng<\/li>\n<li>T\u1ee7 \u0111i\u1ec7n d\u00e2n d\u1ee5ng<\/li>\n<li>C\u00e1c m\u1ea1ch nh\u00e1nh trong t\u1ee7 \u0111i\u1ec7n<\/li>\n<\/ul>\n<h3>MCB c\u00f3 ch\u1ed1ng gi\u1eadt kh\u00f4ng?<\/h3>\n<p><strong>MCB th\u00f4ng th\u01b0\u1eddng kh\u00f4ng c\u00f3 ch\u1ee9c n\u0103ng ph\u00e1t hi\u1ec7n d\u00f2ng \u0111i\u1ec7n r\u00f2.<\/strong><\/p>\n<p>V\u00ec v\u1eady, MCB c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 d\u00e2y d\u1eabn v\u00e0 thi\u1ebft b\u1ecb tr\u01b0\u1edbc qu\u00e1 t\u1ea3i, ng\u1eafn m\u1ea1ch nh\u01b0ng kh\u00f4ng th\u1ec3 thay th\u1ebf RCCB ho\u1eb7c RCBO khi c\u1ea7n b\u1ea3o v\u1ec7 ch\u1ed1ng d\u00f2ng r\u00f2.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>3. MCCB l\u00e0 g\u00ec?<\/h1>\n<p><strong>MCCB \u2013 Molded Case Circuit Breaker<\/strong> l\u00e0 aptomat kh\u1ed1i, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u00f3 d\u00f2ng t\u1ea3i v\u00e0 c\u00f4ng su\u1ea5t l\u1edbn h\u01a1n MCB.<\/p>\n<p>MCCB c\u00f3 kh\u1ea3 n\u0103ng:<\/p>\n<ul>\n<li>B\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i<\/li>\n<li>B\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch<\/li>\n<li>\u0110\u00f3ng\/c\u1eaft ngu\u1ed3n \u0111i\u1ec7n<\/li>\n<li>C\u00f3 kh\u1ea3 n\u0103ng c\u1eaft d\u00f2ng s\u1ef1 c\u1ed1 l\u1edbn<\/li>\n<li>M\u1ed9t s\u1ed1 d\u00f2ng cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh th\u00f4ng s\u1ed1 b\u1ea3o v\u1ec7<\/li>\n<\/ul>\n<h3>MCCB th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf \u0111\u00e2u?<\/h3>\n<p>MCCB th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong:<\/p>\n<ul>\n<li>T\u1ee7 \u0111i\u1ec7n t\u1ed5ng<\/li>\n<li>Nh\u00e0 m\u00e1y<\/li>\n<li>Nh\u00e0 x\u01b0\u1edfng<\/li>\n<li>T\u00f2a nh\u00e0<\/li>\n<li>H\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u00f4ng nghi\u1ec7p<\/li>\n<li>H\u1ec7 th\u1ed1ng \u0111i\u1ec7n m\u1eb7t tr\u1eddi<\/li>\n<li>H\u1ec7 th\u1ed1ng m\u00e1y m\u00f3c c\u00f4ng su\u1ea5t l\u1edbn<\/li>\n<\/ul>\n<h3>MCB v\u00e0 MCCB kh\u00e1c nhau th\u1ebf n\u00e0o?<\/h3>\n<p>MCB th\u01b0\u1eddng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ea1ch nh\u00e1nh v\u00e0 d\u00f2ng \u0111i\u1ec7n nh\u1ecf h\u01a1n, trong khi MCCB \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 d\u00f2ng t\u1ea3i v\u00e0 kh\u1ea3 n\u0103ng c\u1eaft ng\u1eafn m\u1ea1ch l\u1edbn h\u01a1n.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>4. RCD l\u00e0 g\u00ec?<\/h1>\n<p><strong>RCD \u2013 Residual Current Device<\/strong> l\u00e0 t\u00ean g\u1ecdi chung c\u1ee7a nh\u00f3m <strong>thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 b\u1eb1ng d\u00f2ng \u0111i\u1ec7n d\u01b0<\/strong>.<\/p>\n<p>Nguy\u00ean l\u00fd c\u01a1 b\u1ea3n c\u1ee7a RCD l\u00e0 so s\u00e1nh d\u00f2ng \u0111i\u1ec7n \u0111i qua d\u00e2y pha v\u1edbi d\u00f2ng \u0111i\u1ec7n tr\u1edf v\u1ec1 qua d\u00e2y trung t\u00ednh.<\/p>\n<p>Trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng:<\/p>\n<p><strong>D\u00f2ng \u0111i \u2248 D\u00f2ng v\u1ec1<\/strong><\/p>\n<p>N\u1ebfu m\u1ed9t ph\u1ea7n d\u00f2ng \u0111i\u1ec7n b\u1ecb r\u00f2 xu\u1ed1ng \u0111\u1ea5t, qua v\u1ecf thi\u1ebft b\u1ecb ho\u1eb7c qua c\u01a1 th\u1ec3 ng\u01b0\u1eddi, d\u00f2ng \u0111i v\u00e0 d\u00f2ng v\u1ec1 s\u1ebd xu\u1ea5t hi\u1ec7n ch\u00eanh l\u1ec7ch.<\/p>\n<p>Khi d\u00f2ng d\u01b0 v\u01b0\u1ee3t ng\u01b0\u1ee1ng t\u00e1c \u0111\u1ed9ng c\u1ee7a thi\u1ebft b\u1ecb, RCD s\u1ebd ng\u1eaft m\u1ea1ch.<\/p>\n<h3>\u0110i\u1ec3m quan tr\u1ecdng<\/h3>\n<p><strong>RCD l\u00e0 thu\u1eadt ng\u1eef chung<\/strong>, kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0 t\u00ean c\u1ee7a m\u1ed9t ki\u1ec3u CB c\u1ee5 th\u1ec3.<\/p>\n<p>RCCB v\u00e0 RCBO \u0111\u1ec1u thu\u1ed9c nh\u00f3m thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 d\u00f2ng d\u01b0.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>5. RCCB l\u00e0 g\u00ec?<\/h1>\n<p><strong>RCCB \u2013 Residual Current Circuit Breaker<\/strong> l\u00e0 thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft b\u1ea3o v\u1ec7 khi ph\u00e1t hi\u1ec7n <strong>d\u00f2ng \u0111i\u1ec7n d\u01b0\/d\u00f2ng r\u00f2<\/strong>.<\/p>\n<p>RCCB c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t hi\u1ec7n s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng gi\u1eefa d\u00f2ng \u0111i\u1ec7n \u0111i v\u00e0 d\u00f2ng \u0111i\u1ec7n tr\u1edf v\u1ec1.<\/p>\n<p>V\u00ed d\u1ee5, n\u1ebfu RCCB c\u00f3 \u0111\u1ed9 nh\u1ea1y:<\/p>\n<p><strong>I\u0394n = 30mA<\/strong><\/p>\n<p>khi d\u00f2ng d\u01b0 \u0111\u1ea1t \u0111i\u1ec1u ki\u1ec7n t\u00e1c \u0111\u1ed9ng theo thi\u1ebft k\u1ebf, RCCB s\u1ebd ng\u1eaft ngu\u1ed3n.<\/p>\n<h3>RCCB b\u1ea3o v\u1ec7 nh\u1eefng g\u00ec?<\/h3>\n<p>RCCB ch\u1ee7 y\u1ebfu cung c\u1ea5p ch\u1ee9c n\u0103ng:<\/p>\n<p><strong>B\u1ea3o v\u1ec7 d\u00f2ng \u0111i\u1ec7n d\u01b0\/r\u00f2 \u0111i\u1ec7n.<\/strong><\/p>\n<p>RCCB th\u00f4ng th\u01b0\u1eddng <strong>kh\u00f4ng \u0111\u1ea3m nhi\u1ec7m b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch<\/strong>.<\/p>\n<p>Do \u0111\u00f3, trong nhi\u1ec1u h\u1ec7 th\u1ed1ng RCCB c\u1ea7n \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p v\u1edbi MCB ho\u1eb7c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng ph\u00f9 h\u1ee3p.<\/p>\n<h3>V\u00ed d\u1ee5<\/h3>\n<p>M\u1ed9t m\u1ea1ch \u0111i\u1ec7n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng:<\/p>\n<p><strong>MCB + RCCB<\/strong><\/p>\n<p>Trong \u0111\u00f3:<\/p>\n<ul>\n<li>MCB \u2192 b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch.<\/li>\n<li>RCCB \u2192 b\u1ea3o v\u1ec7 d\u00f2ng r\u00f2.<\/li>\n<\/ul>\n<div>\n<hr \/>\n<\/div>\n<h1>6. RCBO l\u00e0 g\u00ec?<\/h1>\n<p><strong>RCBO \u2013 Residual Current operated Circuit Breaker with Overcurrent protection<\/strong> l\u00e0 thi\u1ebft b\u1ecb k\u1ebft h\u1ee3p ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 d\u00f2ng d\u01b0 v\u1edbi b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng.<\/p>\n<p>N\u00f3i \u0111\u01a1n gi\u1ea3n:<\/p>\n<p><strong>RCBO \u2248 MCB + ch\u1ee9c n\u0103ng RCD<\/strong><\/p>\n<p>M\u1ed9t RCBO c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7:<\/p>\n<ul>\n<li>Qu\u00e1 t\u1ea3i<\/li>\n<li>Ng\u1eafn m\u1ea1ch<\/li>\n<li>D\u00f2ng \u0111i\u1ec7n d\u01b0\/r\u00f2 \u0111i\u1ec7n<\/li>\n<\/ul>\n<p>\u0110\u00e2y l\u00e0 \u0111i\u1ec3m kh\u00e1c bi\u1ec7t quan tr\u1ecdng gi\u1eefa <strong>RCCB v\u00e0 RCBO<\/strong>.<\/p>\n<h3>\u01afu \u0111i\u1ec3m c\u1ee7a RCBO<\/h3>\n<p>RCBO gi\u00fap b\u1ea3o v\u1ec7 ri\u00eang t\u1eebng m\u1ea1ch \u0111i\u1ec7n.<\/p>\n<p>V\u00ed d\u1ee5 trong m\u1ed9t ng\u00f4i nh\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng RCBO ri\u00eang cho:<\/p>\n<ul>\n<li>B\u00ecnh n\u01b0\u1edbc n\u00f3ng<\/li>\n<li>M\u00e1y gi\u1eb7t<\/li>\n<li>\u0110i\u1ec1u h\u00f2a<\/li>\n<li>\u1ed4 c\u1eafm<\/li>\n<li>Khu v\u1ef1c nh\u00e0 b\u1ebfp<\/li>\n<li>Thi\u1ebft b\u1ecb ngo\u00e0i tr\u1eddi<\/li>\n<\/ul>\n<p>Khi m\u1ed9t m\u1ea1ch x\u1ea3y ra s\u1ef1 c\u1ed1, RCBO c\u1ee7a m\u1ea1ch \u0111\u00f3 c\u00f3 th\u1ec3 ng\u1eaft m\u00e0 kh\u00f4ng nh\u1ea5t thi\u1ebft l\u00e0m m\u1ea5t \u0111i\u1ec7n to\u00e0n b\u1ed9 c\u00e1c m\u1ea1ch kh\u00e1c.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>7. ELCB l\u00e0 g\u00ec?<\/h1>\n<p><strong>ELCB \u2013 Earth Leakage Circuit Breaker<\/strong> l\u00e0 thu\u1eadt ng\u1eef g\u1eafn v\u1edbi thi\u1ebft b\u1ecb ch\u1ed1ng r\u00f2 \u0111i\u1ec7n\/ch\u1ea1m \u0111\u1ea5t.<\/p>\n<p>V\u1ec1 l\u1ecbch s\u1eed, ELCB c\u00f3 th\u1ec3 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn lo\u1ea1i thi\u1ebft b\u1ecb ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean <strong>\u0111i\u1ec7n \u00e1p \u0111\u1ea5t (voltage-operated ELCB)<\/strong>. C\u00f4ng ngh\u1ec7 n\u00e0y kh\u00e1c v\u1edbi thi\u1ebft b\u1ecb RCD hi\u1ec7n \u0111\u1ea1i ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch ph\u00e1t hi\u1ec7n d\u00f2ng \u0111i\u1ec7n d\u01b0.<\/p>\n<p>Trong th\u1ef1c t\u1ebf th\u1ecb tr\u01b0\u1eddng hi\u1ec7n nay, t\u00ean g\u1ecdi \u201cELCB\u201d \u0111\u00f4i khi v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng kh\u00e1 r\u1ed9ng \u0111\u1ec3 ch\u1ec9 thi\u1ebft b\u1ecb ch\u1ed1ng r\u00f2\/ch\u1ed1ng gi\u1eadt. V\u00ec v\u1eady, khi mua thi\u1ebft b\u1ecb kh\u00f4ng n\u00ean ch\u1ec9 d\u1ef1a v\u00e0o ch\u1eef <strong>ELCB<\/strong> m\u00e0 c\u1ea7n ki\u1ec3m tra r\u00f5:<\/p>\n<ul>\n<li>Nguy\u00ean l\u00fd b\u1ea3o v\u1ec7<\/li>\n<li>Ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m<\/li>\n<li>D\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c<\/li>\n<li>D\u00f2ng d\u01b0 \u0111\u1ecbnh m\u1ee9c I\u0394n<\/li>\n<li>Kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i<\/li>\n<li>Kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch<\/li>\n<\/ul>\n<div>\n<hr \/>\n<\/div>\n<h1>8. RCB l\u00e0 g\u00ec?<\/h1>\n<p><strong>RCB<\/strong> l\u00e0 thu\u1eadt ng\u1eef c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 nh\u00e0 s\u1ea3n xu\u1ea5t, t\u00e0i li\u1ec7u ho\u1eb7c ng\u01b0\u1eddi d\u00f9ng s\u1eed d\u1ee5ng \u0111\u1ec3 n\u00f3i v\u1ec1 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 li\u00ean quan \u0111\u1ebfn d\u00f2ng d\u01b0.<\/p>\n<p>Tuy nhi\u00ean, khi l\u1ef1a ch\u1ecdn s\u1ea3n ph\u1ea9m th\u1ef1c t\u1ebf n\u00ean x\u00e1c \u0111\u1ecbnh r\u00f5 thi\u1ebft b\u1ecb thu\u1ed9c lo\u1ea1i <strong>RCCB, RCBO hay m\u1ed9t d\u1ea1ng RCD kh\u00e1c<\/strong>, thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o t\u00ean g\u1ecdi RCB.<\/p>\n<p>\u0110i\u1ec1u n\u00e0y gi\u00fap tr\u00e1nh nh\u1ea7m l\u1eabn v\u1ec1 kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch c\u1ee7a thi\u1ebft b\u1ecb.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>9. B\u1ea3ng so s\u00e1nh MCB, MCCB, RCD, RCCB, RCBO v\u00e0 ELCB<\/h1>\n<table>\n<tbody>\n<tr>\n<th>Thi\u1ebft b\u1ecb<\/th>\n<th>Ch\u1ee9c n\u0103ng ch\u00ednh<\/th>\n<th>Qu\u00e1 t\u1ea3i<\/th>\n<th>Ng\u1eafn m\u1ea1ch<\/th>\n<th>D\u00f2ng r\u00f2\/d\u00f2ng d\u01b0<\/th>\n<\/tr>\n<tr>\n<td><strong>MCB<\/strong><\/td>\n<td>B\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng<\/td>\n<td>\u2713<\/td>\n<td>\u2713<\/td>\n<td>\u2717<\/td>\n<\/tr>\n<tr>\n<td><strong>MCCB<\/strong><\/td>\n<td>B\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng, \u1ee9ng d\u1ee5ng c\u00f4ng su\u1ea5t l\u1edbn<\/td>\n<td>\u2713<\/td>\n<td>\u2713<\/td>\n<td>Kh\u00f4ng m\u1eb7c \u0111\u1ecbnh*<\/td>\n<\/tr>\n<tr>\n<td><strong>RCD<\/strong><\/td>\n<td>T\u00ean g\u1ecdi chung cho thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 d\u00f2ng d\u01b0<\/td>\n<td>T\u00f9y lo\u1ea1i<\/td>\n<td>T\u00f9y lo\u1ea1i<\/td>\n<td>\u2713<\/td>\n<\/tr>\n<tr>\n<td><strong>RCCB<\/strong><\/td>\n<td>B\u1ea3o v\u1ec7 d\u00f2ng d\u01b0<\/td>\n<td>\u2717<\/td>\n<td>\u2717<\/td>\n<td>\u2713<\/td>\n<\/tr>\n<tr>\n<td><strong>RCBO<\/strong><\/td>\n<td>B\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng + d\u00f2ng d\u01b0<\/td>\n<td>\u2713<\/td>\n<td>\u2713<\/td>\n<td>\u2713<\/td>\n<\/tr>\n<tr>\n<td><strong>ELCB<\/strong><\/td>\n<td>Thi\u1ebft b\u1ecb ch\u1ed1ng r\u00f2\/ch\u1ea1m \u0111\u1ea5t theo c\u00e1ch g\u1ecdi ho\u1eb7c c\u00f4ng ngh\u1ec7 c\u1ee5 th\u1ec3<\/td>\n<td>T\u00f9y thi\u1ebft b\u1ecb<\/td>\n<td>T\u00f9y thi\u1ebft b\u1ecb<\/td>\n<td>\u2713\/T\u00f9y lo\u1ea1i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>* MCCB c\u00f3 th\u1ec3 c\u00f3 th\u00eam ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 ch\u1ea1m \u0111\u1ea5t ho\u1eb7c b\u1ea3o v\u1ec7 n\u00e2ng cao t\u00f9y model v\u00e0 b\u1ed9 trip; kh\u00f4ng n\u00ean m\u1eb7c \u0111\u1ecbnh m\u1ecdi MCCB \u0111\u1ec1u c\u00f3 ch\u1ee9c n\u0103ng ch\u1ed1ng d\u00f2ng r\u00f2.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7028\" src=\"http:\/\/sunnysolar.vn\/wp-content\/uploads\/2026\/09\/phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb.jpeg\" alt=\"\" width=\"1312\" height=\"1199\" srcset=\"https:\/\/sunnysolar.vn\/wp-content\/uploads\/2026\/09\/phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb.jpeg 1312w, https:\/\/sunnysolar.vn\/wp-content\/uploads\/2026\/09\/phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb-300x274.jpeg 300w, https:\/\/sunnysolar.vn\/wp-content\/uploads\/2026\/09\/phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb-1024x936.jpeg 1024w, https:\/\/sunnysolar.vn\/wp-content\/uploads\/2026\/09\/phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb-768x702.jpeg 768w, https:\/\/sunnysolar.vn\/wp-content\/uploads\/2026\/09\/phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb-13x12.jpeg 13w, https:\/\/sunnysolar.vn\/wp-content\/uploads\/2026\/09\/phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb-600x548.jpeg 600w, https:\/\/sunnysolar.vn\/wp-content\/uploads\/2026\/09\/phan-biet-mcb-mccb-rcd-rccb-rcbo-elcb-64x58.jpeg 64w\" sizes=\"auto, (max-width: 1312px) 100vw, 1312px\" \/><\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>10. S\u1ef1 kh\u00e1c nhau gi\u1eefa RCCB v\u00e0 RCBO<\/h1>\n<p>\u0110\u00e2y l\u00e0 hai thi\u1ebft b\u1ecb r\u1ea5t d\u1ec5 b\u1ecb nh\u1ea7m l\u1eabn.<\/p>\n<h3>RCCB<\/h3>\n<p>Ch\u1ee7 y\u1ebfu b\u1ea3o v\u1ec7:<\/p>\n<p><strong>D\u00f2ng \u0111i\u1ec7n d\u01b0\/r\u00f2 \u0111i\u1ec7n<\/strong><\/p>\n<p>RCCB th\u00f4ng th\u01b0\u1eddng kh\u00f4ng b\u1ea3o v\u1ec7:<\/p>\n<p><strong>Qu\u00e1 t\u1ea3i + ng\u1eafn m\u1ea1ch<\/strong><\/p>\n<p>Do \u0111\u00f3 th\u01b0\u1eddng ph\u1ea3i k\u1ebft h\u1ee3p v\u1edbi thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng.<\/p>\n<h3>RCBO<\/h3>\n<p>B\u1ea3o v\u1ec7 \u0111\u1ed3ng th\u1eddi:<\/p>\n<p><strong>Qu\u00e1 t\u1ea3i + ng\u1eafn m\u1ea1ch + d\u00f2ng \u0111i\u1ec7n d\u01b0<\/strong><\/p>\n<p>V\u00ec v\u1eady, RCBO l\u00e0 gi\u1ea3i ph\u00e1p t\u00edch h\u1ee3p nhi\u1ec1u ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 trong c\u00f9ng m\u1ed9t thi\u1ebft b\u1ecb.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>11. N\u00ean ch\u1ecdn MCB, MCCB, RCCB hay RCBO?<\/h1>\n<p>Kh\u00f4ng c\u00f3 m\u1ed9t lo\u1ea1i CB ph\u00f9 h\u1ee3p cho m\u1ecdi v\u1ecb tr\u00ed. Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1ea7n c\u0103n c\u1ee9 v\u00e0o t\u1ea3i, d\u00e2y d\u1eabn, d\u00f2ng ng\u1eafn m\u1ea1ch d\u1ef1 ki\u1ebfn, h\u1ec7 th\u1ed1ng n\u1ed1i \u0111\u1ea5t v\u00e0 y\u00eau c\u1ea7u an to\u00e0n.<\/p>\n<h3>M\u1ea1ch \u0111i\u1ec7n d\u00e2n d\u1ee5ng th\u00f4ng th\u01b0\u1eddng<\/h3>\n<p>C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng <strong>MCB<\/strong> \u0111\u1ec3 b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch.<\/p>\n<h3>C\u1ea7n b\u1ea3o v\u1ec7 d\u00f2ng r\u00f2<\/h3>\n<p>C\u00f3 th\u1ec3 s\u1eed d\u1ee5ng:<\/p>\n<p><strong>MCB + RCCB<\/strong><\/p>\n<p>ho\u1eb7c s\u1eed d\u1ee5ng <strong>RCBO<\/strong> n\u1ebfu mu\u1ed1n t\u00edch h\u1ee3p b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng v\u00e0 d\u00f2ng d\u01b0 tr\u00ean c\u00f9ng thi\u1ebft b\u1ecb.<\/p>\n<h3>M\u1ea1ch ri\u00eang c\u1ea7n \u0111\u1ed9 \u0111\u1ed9c l\u1eadp cao<\/h3>\n<p>RCBO th\u01b0\u1eddng thu\u1eadn ti\u1ec7n cho c\u00e1c m\u1ea1ch nh\u01b0 b\u00ecnh n\u01b0\u1edbc n\u00f3ng, m\u00e1y gi\u1eb7t, \u1ed5 c\u1eafm ho\u1eb7c thi\u1ebft b\u1ecb ngo\u00e0i tr\u1eddi v\u00ec m\u1ed7i m\u1ea1ch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 \u0111\u1ed9c l\u1eadp.<\/p>\n<h3>H\u1ec7 th\u1ed1ng \u0111i\u1ec7n c\u00f4ng su\u1ea5t l\u1edbn<\/h3>\n<p>MCCB th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf \u0111\u1ea7u ngu\u1ed3n, t\u1ee7 t\u1ed5ng ho\u1eb7c c\u00e1c t\u1ea3i l\u1edbn, nh\u01b0ng ph\u1ea3i l\u1ef1a ch\u1ecdn d\u1ef1a tr\u00ean d\u00f2ng \u0111\u1ecbnh m\u1ee9c, kh\u1ea3 n\u0103ng c\u1eaft v\u00e0 y\u00eau c\u1ea7u ph\u1ed1i h\u1ee3p b\u1ea3o v\u1ec7 c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>12. Th\u00f4ng s\u1ed1 c\u1ea7n quan t\u00e2m khi ch\u1ecdn CB<\/h1>\n<p>Kh\u00f4ng n\u00ean l\u1ef1a ch\u1ecdn CB ch\u1ec9 d\u1ef1a tr\u00ean d\u00f2ng \u0111\u1ecbnh m\u1ee9c nh\u01b0 16A, 32A hay 63A. M\u1ed9t s\u1ed1 th\u00f4ng s\u1ed1 quan tr\u1ecdng c\u1ea7n ki\u1ec3m tra g\u1ed3m:<\/p>\n<ul>\n<li><strong>In:<\/strong> d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c.<\/li>\n<li><strong>Icn\/Icu\/Ics:<\/strong> c\u00e1c th\u00f4ng s\u1ed1 li\u00ean quan \u0111\u1ebfn kh\u1ea3 n\u0103ng c\u1eaft d\u00f2ng ng\u1eafn m\u1ea1ch t\u00f9y lo\u1ea1i thi\u1ebft b\u1ecb v\u00e0 ti\u00eau chu\u1ea9n.<\/li>\n<li><strong>S\u1ed1 c\u1ef1c:<\/strong> 1P, 1P+N, 2P, 3P, 4P&#8230;<\/li>\n<li><strong>\u0110i\u1ec7n \u00e1p \u0111\u1ecbnh m\u1ee9c:<\/strong> ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec7n.<\/li>\n<li><strong>I\u0394n:<\/strong> d\u00f2ng d\u01b0 t\u00e1c \u0111\u1ed9ng \u0111\u1ecbnh m\u1ee9c \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb RCD.<\/li>\n<li><strong>Lo\u1ea1i RCD:<\/strong> Type AC, Type A, Type F, Type B&#8230; t\u00f9y \u0111\u1eb7c t\u00ednh d\u00f2ng r\u00f2 c\u1ea7n ph\u00e1t hi\u1ec7n.<\/li>\n<li><strong>\u0110\u1eb7c tuy\u1ebfn t\u00e1c \u0111\u1ed9ng:<\/strong> v\u00ed d\u1ee5 B, C, D \u0111\u1ed1i v\u1edbi nhi\u1ec1u d\u00f2ng MCB\/RCBO.<\/li>\n<li><strong>Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng:<\/strong> c\u1ea7n ki\u1ec3m tra tr\u00ean t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t.<\/li>\n<\/ul>\n<div>\n<hr \/>\n<\/div>\n<h1>13. M\u1ed9t s\u1ed1 nh\u1ea7m l\u1eabn th\u01b0\u1eddng g\u1eb7p<\/h1>\n<p><strong>\u201cMCB c\u0169ng ch\u1ed1ng gi\u1eadt.\u201d<\/strong><br \/>\nKh\u00f4ng \u0111\u00fang v\u1edbi MCB th\u00f4ng th\u01b0\u1eddng. MCB ch\u1ee7 y\u1ebfu b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch.<\/p>\n<p><strong>\u201cRCCB c\u00f3 th\u1ec3 thay ho\u00e0n to\u00e0n MCB.\u201d<\/strong><br \/>\nKh\u00f4ng n\u00ean hi\u1ec3u nh\u01b0 v\u1eady. RCCB th\u00f4ng th\u01b0\u1eddng kh\u00f4ng cung c\u1ea5p b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i\/ng\u1eafn m\u1ea1ch v\u00e0 c\u1ea7n \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p v\u1edbi b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng ph\u00f9 h\u1ee3p.<\/p>\n<p><strong>\u201cRCCB v\u00e0 RCBO gi\u1ed1ng nhau.\u201d<\/strong><br \/>\nKh\u00f4ng gi\u1ed1ng nhau. RCBO c\u00f3 th\u00eam ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 qu\u00e1 d\u00f2ng.<\/p>\n<p><strong>\u201cRCD l\u00e0 m\u1ed9t lo\u1ea1i CB ri\u00eang bi\u1ec7t v\u1edbi RCCB v\u00e0 RCBO.\u201d<\/strong><br \/>\nKh\u00f4ng ho\u00e0n to\u00e0n ch\u00ednh x\u00e1c. RCD l\u00e0 thu\u1eadt ng\u1eef chung cho thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 b\u1eb1ng d\u00f2ng d\u01b0; RCCB v\u00e0 RCBO l\u00e0 nh\u1eefng d\u1ea1ng thi\u1ebft b\u1ecb thu\u1ed9c nh\u00f3m n\u00e0y.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h1>14. K\u1ebft lu\u1eadn<\/h1>\n<p>C\u00f3 th\u1ec3 ghi nh\u1edb s\u1ef1 kh\u00e1c nhau gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n:<\/p>\n<p><strong>MCB \u2192 Qu\u00e1 t\u1ea3i + ng\u1eafn m\u1ea1ch<\/strong><\/p>\n<p><strong>MCCB \u2192 Qu\u00e1 t\u1ea3i + ng\u1eafn m\u1ea1ch, th\u01b0\u1eddng d\u00e0nh cho h\u1ec7 th\u1ed1ng c\u00f3 d\u00f2ng t\u1ea3i v\u00e0 kh\u1ea3 n\u0103ng c\u1eaft l\u1edbn h\u01a1n<\/strong><\/p>\n<p><strong>RCD \u2192 T\u00ean g\u1ecdi chung c\u1ee7a thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 b\u1eb1ng d\u00f2ng d\u01b0<\/strong><\/p>\n<p><strong>RCCB \u2192 B\u1ea3o v\u1ec7 d\u00f2ng d\u01b0<\/strong><\/p>\n<p><strong>RCBO \u2192 Qu\u00e1 t\u1ea3i + ng\u1eafn m\u1ea1ch + d\u00f2ng d\u01b0<\/strong><\/p>\n<p><strong>ELCB \u2192 Thu\u1eadt ng\u1eef ch\u1ed1ng r\u00f2\/ch\u1ea1m \u0111\u1ea5t c\u1ea7n xem k\u1ef9 nguy\u00ean l\u00fd v\u00e0 th\u00f4ng s\u1ed1 c\u1ee7a s\u1ea3n ph\u1ea9m c\u1ee5 th\u1ec3<\/strong><\/p>\n<p>Khi thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111i\u1ec7n, vi\u1ec7c ch\u1ecdn \u0111\u00fang thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 kh\u00f4ng ch\u1ec9 gi\u00fap b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb v\u00e0 d\u00e2y d\u1eabn m\u00e0 c\u00f2n g\u00f3p ph\u1ea7n gi\u1ea3m nguy c\u01a1 \u0111i\u1ec7n gi\u1eadt, ch\u1eadp ch\u00e1y v\u00e0 c\u00e1c s\u1ef1 c\u1ed1 v\u1ec1 \u0111i\u1ec7n.<\/p>\n<div>\n<hr \/>\n<\/div>\n<h2>Th\u00f4ng tin li\u00ean h\u1ec7<\/h2>\n<p>B\u1ea1n \u0111ang c\u1ea7n l\u1ef1a ch\u1ecdn <strong>MCB, MCCB, RCCB, RCBO, thi\u1ebft b\u1ecb ch\u1ed1ng r\u00f2 ho\u1eb7c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 cho h\u1ec7 th\u1ed1ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi<\/strong>?<\/p>\n<p>\u260e\ufe0f <strong>Hotline: 0357 690 717<\/strong><br \/>\n\ud83c\udf10 <strong>Website: <\/strong><a href=\"https:\/\/sunnysolar.vn\/en\/\"><strong>www.sunnysolar.vn<\/strong><\/a><\/p>\n<p>Li\u00ean h\u1ec7 \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng su\u1ea5t t\u1ea3i v\u00e0 nhu c\u1ea7u s\u1eed d\u1ee5ng.<\/p>","protected":false},"excerpt":{"rendered":"<p>Ph\u00e2n Bi\u1ec7t MCB, MCCB, RCB, RCD, RCCB, RCBO V\u00e0 ELCB \u2013 N\u00ean D\u00f9ng Lo\u1ea1i N\u00e0o? 1. MCB, MCCB, RCD, RCCB, RCBO v\u00e0 ELCB l\u00e0 g\u00ec? Trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n d\u00e2n d\u1ee5ng, th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p, c\u00e1c thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft v\u00e0 b\u1ea3o v\u1ec7 nh\u01b0 MCB, MCCB, RCD, RCCB, RCBO v\u00e0 ELCB \u0111\u00f3ng vai tr\u00f2 [&#8230;]","protected":false},"author":1,"featured_media":7029,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-7027","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ph\u00e2n Bi\u1ec7t MCB, MCCB, RCB, RCD, RCCB, RCBO V\u00e0 ELCB - Sunny Solar<\/title>\n<meta name=\"description\" content=\"T\u00ecm hi\u1ec3u s\u1ef1 kh\u00e1c nhau gi\u1eefa MCB, MCCB, RCB, RCD, RCCB, RCBO v\u00e0 ELCB. 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