{"id":4253,"date":"2026-09-27T00:00:00","date_gmt":"2026-09-27T00:00:00","guid":{"rendered":"https:\/\/chac-electric.com\/?p=4253"},"modified":"2026-09-18T08:06:53","modified_gmt":"2026-09-18T08:06:53","slug":"bo-ngat-mach-dang-duc-so-voi-bo-ngat-mach-thu-nho","status":"publish","type":"post","link":"https:\/\/chac-electric.com\/vi\/blog\/molded-case-circuit-breaker-vs-miniature-circuit-breaker\/","title":{"rendered":"Aptomat kh\u1ed1i (MCCB) so v\u1edbi aptomat t\u00e9p (MCB)"},"content":{"rendered":"

Khi m\u1ed9t vai tr\u00f2 trong d\u1ef1 \u00e1n g\u1eb7p ph\u1ea3i v\u1ea5n \u0111\u1ec1 l\u1ef1a ch\u1ecdn, nh\u1eefng th\u1ea5t b\u1ea1i r\u00f5 r\u00e0ng th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n tr\u01b0\u1edbc khi nguy\u00ean nh\u00e2n th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c hi\u1ec3u r\u00f5. Grace, m\u1ed9t ng\u01b0\u1eddi mua trung t\u00e2m d\u1eef li\u1ec7u t\u1ea1i Dublin, \u0111\u00e3 ch\u1ecdn MCBs cho m\u1ecdi \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ec3 gi\u1ea3m chi ph\u00ed b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n. Kh\u00e1ch h\u00e0ng ch\u00ednh c\u1ea7n b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh v\u00e0 c\u00f4ng su\u1ea5t ng\u1eaft \u0111i\u1ec7n cao h\u01a1n, v\u00ec v\u1eady nh\u00f3m \u0111\u00e3 xem x\u00e9t l\u1ea1i quy\u1ebft \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc khung.<\/p>\n

T\u00f3m t\u1eaft:<\/strong> C\u00e1c MCB l\u00e0 thi\u1ebft b\u1ecb c\u1ed1 \u0111\u1ecbnh nh\u1ecf g\u1ecdn d\u00f9ng \u0111\u1ec3 \u0111\u1ea5u n\u1ed1i v\u00e0 ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u1edf c\u00e1c nh\u00e1nh v\u00e0 c\u00e1c m\u1ea1ch ph\u00e2n ph\u1ed1i nh\u1ecf h\u01a1n; c\u00e1c MCCB s\u1eed d\u1ee5ng v\u1ecf b\u1ecdc l\u1edbn h\u01a1n v\u00e0 th\u01b0\u1eddng c\u00f3 kh\u1ea3 n\u0103ng truy\u1ec1n t\u1ea3i d\u00f2ng \u0111i\u1ec7n cao h\u01a1n, c\u00f4ng su\u1ea5t ng\u1eaft m\u1ea1nh h\u01a1n v\u00e0 ch\u1ee9c n\u0103ng ng\u1eaft t\u1ef1 \u0111\u1ed9ng c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh. Vi\u1ec7c l\u1ef1a ch\u1ecdn kh\u00f4ng ch\u1ec9 d\u1ef1a tr\u00ean ch\u1ec9 s\u1ed1 d\u00f2ng \u0111i\u1ec7n m\u00e0 c\u00f2n bao g\u1ed3m c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 nhi\u1ec7m v\u1ee5 kh\u1ea9n c\u1ea5p, ph\u1ed1i h\u1ee3p, ph\u1ee5 ki\u1ec7n, v\u1ecf b\u1ecdc v\u00e0 b\u1ea3o tr\u00ec. B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111\u01b0a ra c\u00e1c th\u00f4ng tin ch\u1ee9ng minh d\u1ef1a tr\u00ean th\u1ef1c t\u1ebf v\u00e0 ph\u00e2n bi\u1ec7t kh\u1ea3 n\u0103ng s\u1ea3n ph\u1ea9m v\u1edbi tr\u00e1ch nhi\u1ec7m l\u1eafp \u0111\u1eb7t.<\/p>\n

\"\u1ee8ng<\/p>\n

S\u1ee9c ch\u1ee9a hi\u1ec7n t\u1ea1i v\u00e0 m\u1edbi nh\u1ea5t<\/h2>\n

C\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang b\u1eaft \u0111\u1ea7u t\u1eeb ranh gi\u1edbi \u1ee9ng d\u1ee5ng. H\u00e3y x\u00e1c \u0111\u1ecbnh ngu\u1ed3n, t\u1ea3i, d\u00e2y d\u1eabn, m\u1ee9c \u0111\u1ed9 s\u1ef1 c\u1ed1 v\u00e0 m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh tr\u01b0\u1edbc khi so s\u00e1nh c\u00e1c catalogue. M\u1ed9t thi\u1ebft b\u1ecb tr\u00f4ng c\u00f3 v\u1ebb ph\u00f9 h\u1ee3p v\u1ec1 \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n v\u1eabn c\u00f3 th\u1ec3 h\u1ecfng v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ed3 quang, t\u00ednh ch\u1ecdn l\u1ecdc, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t. H\u00e3y s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n \u0111i d\u00e2y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0m ng\u00f4n ng\u1eef chung gi\u1eefa thi\u1ebft k\u1ebf, mua s\u1eafm v\u00e0 ch\u1ea1y th\u1eed.<\/p>\n

L\u1eadp t\u00e0i li\u1ec7u v\u1ec1 c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 ki\u1ec3m tra ch\u00fang t\u1ea1i t\u1ee7 \u0111i\u1ec7n. V\u00ed d\u1ee5, m\u1ed9t nghi\u00ean c\u1ee9u v\u1ec1 b\u1ea3o v\u1ec7 c\u1ea7n n\u00eau r\u00f5 d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch d\u1ef1 ki\u1ebfn, d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng (inrush) d\u1ef1 ki\u1ebfn, kh\u1ea3 n\u0103ng mang d\u00f2ng c\u1ee7a d\u00e2y d\u1eabn v\u00e0 th\u1eddi gian c\u1eaft y\u00eau c\u1ea7u. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u00f3 t\u00ean g\u1ecdi c\u1ee5 th\u1ec3 nh\u01b0 th\u1eed nghi\u1ec7m ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p, th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n ho\u1eb7c nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p s\u1ebd h\u1eefu \u00edch h\u01a1n so v\u1edbi m\u1ed9t tuy\u00ean b\u1ed1 chung chung r\u1eb1ng m\u1ed9t s\u1ea3n ph\u1ea9m \u0111\u1ea1t \u201cc\u1ea5p \u0111\u1ed9 c\u00f4ng nghi\u1ec7p.\u201d<\/p>\n

N\u1ebfu c\u00e2u tr\u1ea3 l\u1eddi thay \u0111\u1ed5i theo th\u1ecb tr\u01b0\u1eddng \u0111\u00edch, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p ho\u1eb7c lo\u1ea1i \u1ee9ng d\u1ee5ng, h\u00e3y n\u00eau gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3 trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn b\u1eb1ng v\u0103n b\u1ea3n tr\u01b0\u1edbc khi ph\u00e1t h\u00e0nh.<\/p>\n

Ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 ch\u00ednh v\u00e0 b\u1ea3o v\u1ec7 nh\u00e1nh<\/h2>\n

C\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang b\u1eaft \u0111\u1ea7u t\u1eeb ranh gi\u1edbi \u1ee9ng d\u1ee5ng. H\u00e3y x\u00e1c \u0111\u1ecbnh ngu\u1ed3n, t\u1ea3i, d\u00e2y d\u1eabn, m\u1ee9c \u0111\u1ed9 s\u1ef1 c\u1ed1 v\u00e0 m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh tr\u01b0\u1edbc khi so s\u00e1nh c\u00e1c catalogue. M\u1ed9t thi\u1ebft b\u1ecb tr\u00f4ng c\u00f3 v\u1ebb ph\u00f9 h\u1ee3p v\u1ec1 \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n v\u1eabn c\u00f3 th\u1ec3 h\u1ecfng v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ed3 quang, t\u00ednh ch\u1ecdn l\u1ecdc, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t. H\u00e3y s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n \u0111i d\u00e2y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0m ng\u00f4n ng\u1eef chung gi\u1eefa thi\u1ebft k\u1ebf, mua s\u1eafm v\u00e0 ch\u1ea1y th\u1eed.<\/p>\n

L\u1eadp t\u00e0i li\u1ec7u v\u1ec1 c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 ki\u1ec3m tra ch\u00fang t\u1ea1i t\u1ee7 \u0111i\u1ec7n. V\u00ed d\u1ee5, m\u1ed9t nghi\u00ean c\u1ee9u v\u1ec1 b\u1ea3o v\u1ec7 c\u1ea7n n\u00eau r\u00f5 d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch d\u1ef1 ki\u1ebfn, d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng (inrush) d\u1ef1 ki\u1ebfn, kh\u1ea3 n\u0103ng mang d\u00f2ng c\u1ee7a d\u00e2y d\u1eabn v\u00e0 th\u1eddi gian c\u1eaft y\u00eau c\u1ea7u. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u00f3 t\u00ean g\u1ecdi c\u1ee5 th\u1ec3 nh\u01b0 th\u1eed nghi\u1ec7m ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p, th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n ho\u1eb7c nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p s\u1ebd h\u1eefu \u00edch h\u01a1n so v\u1edbi m\u1ed9t tuy\u00ean b\u1ed1 chung chung r\u1eb1ng m\u1ed9t s\u1ea3n ph\u1ea9m \u0111\u1ea1t \u201cc\u1ea5p \u0111\u1ed9 c\u00f4ng nghi\u1ec7p.\u201d<\/p>\n

N\u1ebfu c\u00e2u tr\u1ea3 l\u1eddi thay \u0111\u1ed5i theo th\u1ecb tr\u01b0\u1eddng \u0111\u00edch, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p ho\u1eb7c lo\u1ea1i \u1ee9ng d\u1ee5ng, h\u00e3y n\u00eau gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3 trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn b\u1eb1ng v\u0103n b\u1ea3n tr\u01b0\u1edbc khi ph\u00e1t h\u00e0nh.<\/p>\n

K\u00edch th\u01b0\u1edbc khung, ph\u1ee5 ki\u1ec7n v\u00e0 TCO<\/h2>\n

C\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang b\u1eaft \u0111\u1ea7u t\u1eeb ranh gi\u1edbi \u1ee9ng d\u1ee5ng. H\u00e3y x\u00e1c \u0111\u1ecbnh ngu\u1ed3n, t\u1ea3i, d\u00e2y d\u1eabn, m\u1ee9c \u0111\u1ed9 s\u1ef1 c\u1ed1 v\u00e0 m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh tr\u01b0\u1edbc khi so s\u00e1nh c\u00e1c catalogue. M\u1ed9t thi\u1ebft b\u1ecb tr\u00f4ng c\u00f3 v\u1ebb ph\u00f9 h\u1ee3p v\u1ec1 \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n v\u1eabn c\u00f3 th\u1ec3 h\u1ecfng v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ecbu h\u1ed3 quang, t\u00ednh ch\u1ecdn l\u1ecdc, nhi\u1ec7t \u0111\u1ed9 ho\u1eb7c ph\u01b0\u01a1ng ph\u00e1p l\u1eafp \u0111\u1eb7t. H\u00e3y s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong th\u1eddi gian-d\u00f2ng \u0111i\u1ec7n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ti\u00eau chu\u1ea9n \u0111i d\u00e2y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0m ng\u00f4n ng\u1eef chung gi\u1eefa thi\u1ebft k\u1ebf, mua s\u1eafm v\u00e0 ch\u1ea1y th\u1eed.<\/p>\n

L\u1eadp t\u00e0i li\u1ec7u v\u1ec1 c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u00e0 ki\u1ec3m tra ch\u00fang t\u1ea1i t\u1ee7 \u0111i\u1ec7n. V\u00ed d\u1ee5, m\u1ed9t nghi\u00ean c\u1ee9u v\u1ec1 b\u1ea3o v\u1ec7 c\u1ea7n n\u00eau r\u00f5 d\u00f2ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch d\u1ef1 ki\u1ebfn, d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng (inrush) d\u1ef1 ki\u1ebfn, kh\u1ea3 n\u0103ng mang d\u00f2ng c\u1ee7a d\u00e2y d\u1eabn v\u00e0 th\u1eddi gian c\u1eaft y\u00eau c\u1ea7u. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p c\u00f3 t\u00ean g\u1ecdi c\u1ee5 th\u1ec3 nh\u01b0 th\u1eed nghi\u1ec7m ti\u00eam d\u00f2ng s\u01a1 c\u1ea5p, th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf c\u00e1ch \u0111i\u1ec7n ho\u1eb7c nghi\u00ean c\u1ee9u ph\u1ed1i h\u1ee3p s\u1ebd h\u1eefu \u00edch h\u01a1n so v\u1edbi m\u1ed9t tuy\u00ean b\u1ed1 chung chung r\u1eb1ng m\u1ed9t s\u1ea3n ph\u1ea9m \u0111\u1ea1t \u201cc\u1ea5p \u0111\u1ed9 c\u00f4ng nghi\u1ec7p.\u201d<\/p>\n

N\u1ebfu c\u00e2u tr\u1ea3 l\u1eddi thay \u0111\u1ed5i theo th\u1ecb tr\u01b0\u1eddng \u0111\u00edch, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p ho\u1eb7c lo\u1ea1i \u1ee9ng d\u1ee5ng, h\u00e3y n\u00eau gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3 trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 nh\u1eadn \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn b\u1eb1ng v\u0103n b\u1ea3n tr\u01b0\u1edbc khi ph\u00e1t h\u00e0nh.<\/p>\n

\"S\u1ea3n<\/p>\n

So s\u00e1nh cho m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u00f3 t\u00ednh b\u1ea3o v\u1ec7<\/h2>\n\n\n\n\n\n\n\n
K\u00edch th\u01b0\u1edbc<\/th>\nL\u1ef1a ch\u1ecdn A<\/th>\nPh\u01b0\u01a1ng \u00e1n B<\/th>\n<\/tr>\n<\/thead>\n
Khung<\/td>\nKi\u1ec3u d\u00e1ng g\u1ecdn nh\u1eb9 theo ti\u00eau chu\u1ea9n DIN-rail<\/td>\nB\u1ea3ng \u0111i\u1ec1u khi\u1ec3n h\u00ecnh \u0111\u00fac l\u1edbn h\u01a1n<\/td>\n<\/tr>\n
B\u1ea3o v\u1ec7<\/td>\nTh\u00f4ng th\u01b0\u1eddng c\u00f3 c\u00e1c c\u00e0i \u0111\u1eb7t nhi\u1ec7t-magi\u00ea c\u1ed1 \u0111\u1ecbnh<\/td>\nC\u00f3 th\u1ec3 bao g\u1ed3m ch\u1ee9c n\u0103ng \u0111i l\u1ea1i c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh ho\u1eb7c \u0111i\u1ec7n t\u1eed<\/td>\n<\/tr>\n
\u1ee8ng d\u1ee5ng<\/td>\nC\u00e1c m\u1ea1ch nh\u00e1nh v\u00e0 m\u1ea1ch cu\u1ed1i<\/td>\nC\u00e1c nhi\u1ec7m v\u1ee5 li\u00ean quan \u0111\u1ebfn th\u1ee9c \u0103n, ng\u01b0\u1eddi \u0111\u1ebfn v\u00e0 c\u00e1c nhi\u1ec7m v\u1ee5 c\u00f3 nguy c\u01a1 cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u00e1c ho\u1ea1t \u0111\u1ed9ng l\u1ef1a ch\u1ecdn v\u00e0 mua s\u1eafm<\/h2>\n
    \n
  1. \u0110\u00f3ng b\u0103ng c\u00e1c gi\u1ea3 \u0111\u1ecbnh v\u1ec1 \u0111i\u1ec7n: \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng, s\u1ed1 c\u1ef1c, d\u00f2ng t\u1ea3i, ph\u01b0\u01a1ng ph\u00e1p d\u1eabn \u0111i\u1ec7n, d\u00f2ng s\u1ef1 c\u1ed1 v\u00e0 gi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng.<\/li>\n
  2. Y\u00eau c\u1ea7u d\u1eef li\u1ec7u theo d\u00f2ng s\u1ea3n ph\u1ea9m: phi\u00ean b\u1ea3n ti\u00eau chu\u1ea9n, \u0111\u01b0\u1eddng \u0111\u1eb7c t\u00ednh d\u00f2ng c\u1eaft, kh\u1ea3 n\u0103ng ng\u1eaft, gi\u1edbi h\u1ea1n c\u1ef1c \u0111\u1ea5u d\u00e2y, k\u00edch th\u01b0\u1edbc v\u00e0 b\u1eb1ng ch\u1ee9ng th\u1eed nghi\u1ec7m.<\/li>\n
  3. Xem x\u00e9t vi\u1ec7c ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft b\u1ecb th\u01b0\u1ee3ng ngu\u1ed3n v\u00e0 h\u1ea1 ngu\u1ed3n; kh\u00f4ng suy lu\u1eadn t\u00ednh ch\u1ecdn l\u1ecdc t\u1eeb nh\u00e3n hi\u1ec7u ho\u1eb7c k\u00edch th\u01b0\u1edbc khung.<\/li>\n
  4. Ph\u00ea duy\u1ec7t m\u1eabu ho\u1eb7c b\u00e0i vi\u1ebft \u0111\u1ea7u ti\u00ean, ghi l\u1ea1i l\u1ef1c si\u1ebft v\u00e0 c\u00e1c \u0111i\u1ec3m ki\u1ec3m tra, \u0111\u1ed3ng th\u1eddi x\u00e1c \u0111\u1ecbnh ai l\u00e0 ng\u01b0\u1eddi th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i ki\u1ec3m tra ch\u1ea1y th\u1eed.<\/li>\n
  5. L\u1eadp k\u1ebf ho\u1ea1ch ph\u1ee5 t\u00f9ng v\u00e0 qu\u1ea3n l\u00fd thay \u0111\u1ed5i \u0111\u1ec3 vi\u1ec7c thay th\u1ebf sau n\u00e0y kh\u00f4ng l\u00e0m thay \u0111\u1ed5i \u00e2m th\u1ea7m hi\u1ec7u su\u1ea5t an to\u00e0n.<\/li>\n<\/ol>\n

    \u0110\u1ed1i v\u1edbi nh\u1eefng ng\u01b0\u1eddi mua \u0111ang so s\u00e1nh c\u00e1c d\u00f2ng s\u1ea3n ph\u1ea9m b\u1ea3o v\u1ec7 c\u00f3 th\u1ec3 c\u1ea5u h\u00ecnh, CHAC Electric cung c\u1ea5p th\u00f4ng tin c\u00f4ng khai v\u1ec1 C\u00e1c s\u1ea3n ph\u1ea9m c\u1ee7a MCCB<\/strong><\/a> v\u00e0 C\u00e1c s\u1ea3n ph\u1ea9m MCB<\/strong><\/a>. H\u00e3y coi c\u00e1c trang n\u00e0y l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u v\u00e0 x\u00e1c nh\u1eadn d\u1eef li\u1ec7u m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c cho d\u1ef1 \u00e1n c\u1ee7a b\u1ea1n.<\/p>\n

    <\/p>\n

    S\u1eed d\u1ee5ng m\u1ee9c \u0111\u1ed9 l\u1ed7i v\u00e0 ph\u1ea1m vi \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 ch\u1ecdn khung h\u00ecnh<\/h2>\n

    A B\u1ed9 ng\u1eaft m\u1ea1ch d\u1ea1ng \u0111\u00fac<\/strong><\/a> Ph\u00e2n t\u00edch n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n khi vi\u1ec7c l\u1eafp \u0111\u1eb7t y\u00eau c\u1ea7u m\u1ed9t khung h\u00ecnh l\u1edbn h\u01a1n, \u0111\u1ed9 tin c\u1eady cao h\u01a1n ho\u1eb7c nhi\u1ec1u \u0111i\u1ec1u ch\u1ec9nh h\u01a1n so v\u1edbi m\u1ed9t c\u1ea7u dao t\u1ef1 \u0111\u1ed9ng thu nh\u1ecf<\/strong><\/a> th\u01b0\u1eddng \u0111\u01b0\u1ee3c cung c\u1ea5p. Ti\u00eau ch\u00ed th\u1ee9 ba quy\u1ebft \u0111\u1ecbnh l\u00e0 \u0110i\u1ec1u ph\u1ed1i c\u00f3 ch\u1ecdn l\u1ecdc<\/strong>: So s\u00e1nh c\u00e1c \u0111\u01b0\u1eddng cong th\u1eddi gian v\u00e0 d\u00f2ng \u0111i\u1ec7n c\u00f9ng v\u1edbi c\u00e1c c\u00e0i \u0111\u1eb7t ph\u00eda th\u01b0\u1ee3ng ngu\u1ed3n\/b\u00ean h\u1ea1 ngu\u1ed3n thay v\u00ec gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng m\u1ed9t khung h\u00ecnh l\u1edbn s\u1ebd t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh.<\/p>\n

    Ngo\u00e0i ra, h\u00e3y ki\u1ec3m tra kh\u00f4ng gian b\u00ean trong thi\u1ebft b\u1ecb, dung l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o, kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec v\u00e0 li\u1ec7u d\u1ef1 \u00e1n c\u00f3 y\u00eau c\u1ea7u c\u00e0i \u0111\u1eb7t th\u1eddi gian d\u00e0i ho\u1eb7c th\u1eddi gian nhanh kh\u00f4ng. \u0110\u00e2y l\u00e0 nh\u1eefng y\u00eau c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng, kh\u00f4ng ph\u1ea3i l\u00e0 nh\u1eefng th\u00f4ng tin \u0111\u01b0\u1ee3c qu\u1ea3ng c\u00e1o.<\/p>\n

    B\u00e0i vi\u1ebft li\u00ean quan: B\u1ed9 b\u1ea3o v\u1ec7 m\u1ea1ch \u0111\u1ed9ng c\u01a1 v\u00e0 C\u1ea7u dao \u0111i\u1ec7n<\/a> cho th\u1ea5y ch\u1ee9c n\u0103ng b\u1ea3o v\u1ec7 \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn quy\u1ebft \u0111\u1ecbnh c\u1ee7a khung h\u00ecnh.<\/p>\n

    C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n

    T\u00f4i n\u00ean ch\u1ecdn MCCB hay MCB khi n\u00e0o?<\/h3>\n

    Khi d\u00f2ng \u0111i\u1ec7n, m\u1ee9c \u0111\u1ed9 h\u1ecfng h\u00f3c, \u0111\u1ed9 ch\u1ecdn l\u1ecdc, c\u00e1c thi\u1ebft l\u1eadp c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh ho\u1eb7c c\u00e1c ph\u1ee5 ki\u1ec7n v\u01b0\u1ee3t qu\u00e1 ph\u1ea1m vi th\u1ef1c t\u1ebf c\u1ee7a m\u1ed9t b\u1ed9 c\u00f4ng t\u1eafc MCB, h\u00e3y ch\u1ecdn m\u1ed9t b\u1ed9 c\u00f4ng t\u1eafc MCCB. Ki\u1ec3m tra s\u1ef1 ph\u1ed1i h\u1ee3p ho\u00e0n ch\u1ec9nh v\u00e0 thi\u1ebft k\u1ebf v\u1ecf b\u1ecdc.<\/p>\n

    C\u00f3 ph\u1ea3i MCCB lu\u00f4n an to\u00e0n h\u01a1n kh\u00f4ng?<\/h3>\n

    An to\u00e0n ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c \u0111\u00e1nh gi\u00e1, c\u00e0i \u0111\u1eb7t, l\u1eafp \u0111\u1eb7t v\u00e0 th\u1eed nghi\u1ec7m \u0111\u00fang c\u00e1ch. M\u1ed9t khung h\u00ecnh l\u1edbn h\u01a1n kh\u00f4ng b\u00f9 \u0111\u1eafp cho vi\u1ec7c c\u00e0i \u0111\u1eb7t sai ho\u1eb7c vi\u1ec7c b\u1ea3o v\u1ec7 d\u00e2y d\u1eabn kh\u00f4ng \u0111\u1ee7.<\/p>\n

    C\u00f3 th\u1ec3 m\u1ed9t MCB b\u1ea3o v\u1ec7 m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y c\u1ea5p \u0111i\u1ec7n ch\u00ednh kh\u00f4ng?<\/h3>\n

    \u0110i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 x\u1ea3y ra khi t\u1ed5ng s\u1ed1 ng\u01b0\u1eddi xem hi\u1ec7n t\u1ea1i v\u00e0 nh\u1eefng l\u1ea7n ph\u00e1t s\u00f3ng xen k\u1ebd, v\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t v\u00e0 ph\u1ed1i h\u1ee3p c\u1ee7a thi\u1ebft b\u1ecb \u0111\u00e1p \u1ee9ng v\u1edbi thi\u1ebft k\u1ebf. Nhi\u1ec1u thi\u1ebft b\u1ecb c\u1ea5p \u0111i\u1ec7n l\u1edbn h\u01a1n c\u00f3 l\u1ee3i t\u1eeb c\u00e1c t\u00ednh n\u0103ng c\u1ee7a MCCB, nh\u01b0ng vi\u1ec7c t\u00ednh to\u00e1n quy\u1ebft \u0111\u1ecbnh cu\u1ed1i c\u00f9ng.<\/p>\n

    Chi ph\u00ed b\u1ea3o tr\u00ec c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb MCCB c\u00f3 cao h\u01a1n kh\u00f4ng?<\/h3>\n

    B\u1ea3o tr\u00ec ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ti\u1ebfp c\u1eadn, kho\u1ea3ng th\u1eddi gian ki\u1ec3m tra, ph\u1ee5 ki\u1ec7n v\u00e0 m\u00f4i tr\u01b0\u1eddng. So s\u00e1nh t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu, kh\u00f4ng ch\u1ec9 bao g\u1ed3m gi\u00e1 mua.<\/p>\n

    T\u00e0i li\u1ec7u tham kh\u1ea3o c\u00f3 th\u1ea9m quy\u1ec1n<\/h2>\n