{"id":3196,"date":"2026-07-27T22:06:43","date_gmt":"2026-07-27T22:06:43","guid":{"rendered":"https:\/\/huyuglobal.com\/?p=3196"},"modified":"2026-07-27T22:06:45","modified_gmt":"2026-07-27T22:06:45","slug":"rccb-vs-rcbo","status":"publish","type":"post","link":"https:\/\/huyuglobal.com\/vi\/blog\/rccb-vs-rcbo\/","title":{"rendered":"S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa RCCB v\u00e0 RCBO l\u00e0 g\u00ec?"},"content":{"rendered":"

Khi n\u00e2ng c\u1ea5p b\u1ea3ng \u0111i\u1ec7n \u1edf Sydney, ch\u1ee7 nh\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ee3 \u0111i\u1ec7n khuy\u00ean n\u00ean lo\u1ea1i b\u1ecf c\u1ea7u ch\u00ec g\u1ed1m truy\u1ec1n th\u1ed1ng \u0111\u1ec3 thay th\u1ebf b\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 hi\u1ec7n \u0111\u1ea1i. C\u00f3 hai vi\u1ebft t\u1eaft b\u1ea5t ng\u1edd trong b\u00e1o gi\u00e1 \u0111\u01b0\u1ee3c cung c\u1ea5p cho ch\u1ee7 nh\u00e0. Ch\u1ee7 nh\u00e0 \u0111\u00e3 \u0111\u1eb7t ra m\u1ed9t c\u00e2u h\u1ecfi h\u1ee3p l\u00fd: \u201cNh\u1eefng thu\u1eadt ng\u1eef n\u00e0y c\u00f3 ngh\u0129a l\u00e0 g\u00ec, v\u00e0 t\u00f4i n\u00ean ch\u1ecdn c\u00e1i n\u00e0o?\u201d C\u00e2u tr\u1ea3 l\u1eddi t\u1eeb th\u1ee3 \u0111i\u1ec7n r\u1ea5t \u0111\u01a1n gi\u1ea3n: RCCB \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c b\u1ea3o v\u1ec7 ch\u1ed1ng r\u00f2 r\u1ec9 \u0111\u1ea5t, nh\u01b0ng n\u00f3 s\u1ebd kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng ch\u1ed1ng qu\u00e1 t\u1ea3i ho\u1eb7c ng\u1eafn m\u1ea1ch, do \u0111\u00f3 c\u1ea7n m\u1ed9t c\u1ea7u dao ri\u00eang bi\u1ec7t. RCBO bao g\u1ed3m c\u1ea3 hai ch\u1ee9c n\u0103ng, \u0111i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 tr\u1edf th\u00e0nh m\u1ed9t gi\u1ea3i ph\u00e1p ho\u00e0n h\u1ea3o, bao ph\u1ee7 t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i l\u1ed7i \u2014 r\u00f2 r\u1ec9 \u0111\u1ea5t, qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch. Ch\u1ee7 nh\u00e0 \u0111\u00e3 quy\u1ebft \u0111\u1ecbnh ch\u1ecdn RCBO cho t\u1ea5t c\u1ea3 c\u00e1c m\u1ea1ch cu\u1ed1i c\u00f9ng, v\u00e0 vi\u1ec7c l\u1eafp \u0111\u1eb7t \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t sau khi ki\u1ec3m tra. Vi\u1ec7c l\u00e0m r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa RCCB v\u00e0 RCBO l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 quan tr\u1ecdng m\u00e0 m\u1ecdi th\u1ee3 \u0111i\u1ec7n, qu\u1ea3n l\u00fd c\u01a1 s\u1edf v\u00e0 ch\u1ee7 nh\u00e0 c\u00f3 ki\u1ebfn th\u1ee9c n\u00ean bi\u1ebft \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u00fang \u0111\u1eafn cho c\u00e1c t\u00ednh n\u0103ng b\u1ea3o v\u1ec7 m\u1ea1ch, kh\u00f4ng gian b\u1ea3ng ph\u00e2n ph\u1ed1i v\u00e0 nh\u1eefng kh\u00f3 kh\u0103n trong vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1.<\/p>\n

T\u00f3m t\u1eaft:<\/strong>\u00a0RCCB c\u00f3 tr\u00e1ch nhi\u1ec7m ph\u00e1t hi\u1ec7n l\u1ed7i \u0111\u1ea5t (t\u1ee9c l\u00e0, d\u00f2ng r\u00f2 r\u1ec9 qu\u00e1 m\u1ee9c), \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 c\u00e1c d\u00f2ng \u0111i\u1ec7n c\u00f3 th\u1ec3 ch\u1ea3y v\u00e0o \u0111\u1ea5t qua con ng\u01b0\u1eddi ho\u1eb7c ch\u1ea5t l\u1ecfng d\u1eabn \u0111i\u1ec7n, v\u00e0 c\u1eaft \u0111\u1ee9t m\u1ea1ch m\u00e0 l\u1ed7i \u0111\u00e3 x\u1ea3y ra; tuy nhi\u00ean, n\u00f3 kh\u00f4ng cung c\u1ea5p b\u1ea5t k\u1ef3 h\u00ecnh th\u1ee9c b\u1ea3o v\u1ec7 n\u00e0o ch\u1ed1ng l\u1ea1i vi\u1ec7c ng\u1eafn m\u1ea1ch c\u1ee7a m\u1ea1ch ho\u1eb7c thi\u1ec7t h\u1ea1i do qu\u00e1 t\u1ea3i. Do \u0111\u00f3, n\u00f3 c\u1ea7n \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t song song v\u1edbi m\u1ed9t c\u1ea7u ch\u00ec ho\u1eb7c MCB. RCBO c\u00f3 kh\u1ea3 n\u0103ng k\u1ebft h\u1ee3p t\u00ednh n\u0103ng ph\u00e1t hi\u1ec7n l\u1ed7i \u0111\u1ea5t c\u1ee7a RCCB v\u1edbi t\u00ednh n\u0103ng b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i c\u1ee7a MCB th\u00e0nh m\u1ed9t thi\u1ebft b\u1ecb duy nh\u1ea5t. N\u00f3i nh\u01b0 v\u1eady, RCBO c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed9c l\u1eadp nh\u01b0 thi\u1ebft b\u1ecb an to\u00e0n duy nh\u1ea5t cho m\u1ed9t m\u1ea1ch; ng\u01b0\u1ee3c l\u1ea1i, RCCB kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng \u0111\u00f3. C\u00e1c thu\u1ed9c t\u00ednh ch\u00ednh ph\u00e2n bi\u1ec7t RCCB v\u00e0 RCBO v\u1edbi nhau l\u00e0 k\u00edch th\u01b0\u1edbc v\u00e0 gi\u00e1 c\u1ea3; RCCB, v\u1edbi t\u00ednh ch\u1ea5t \u00edt ph\u1ee9c t\u1ea1p h\u01a1n, c\u00f3 thi\u1ebft k\u1ebf \u0111\u01a1n gi\u1ea3n h\u01a1n, r\u1ebb h\u01a1n so v\u1edbi RCBO, nh\u01b0ng n\u00f3 ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng c\u00f9ng v\u1edbi m\u1ed9t MCB.<\/p><\/blockquote>\n

RCCB l\u00e0 g\u00ec? Ch\u1ec9 B\u1ea3o v\u1ec7 R\u00f2 r\u1ec9 \u0110\u1ea5t<\/h2>\n

M\u1ed9t B\u1ed9 Ng\u1eaft M\u1ea1ch D\u00f2ng R\u00f2 (RCCB) \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn l\u00e0 m\u1ed9t trong nh\u1eefng thi\u1ebft b\u1ecb \u0111i\u1ec7n k\u1ef9 thu\u1eadt nh\u1eb1m ph\u00e1t hi\u1ec7n d\u00f2ng l\u1ed7i \u0111\u1ea5t. M\u1ed9t RCCB \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ng\u1eaft m\u1ea1ch \u0111i\u1ec7n trong tr\u01b0\u1eddng h\u1ee3p d\u00f2ng l\u1ed7i n\u00eau tr\u00ean cao h\u01a1n m\u1ed9t gi\u00e1 tr\u1ecb c\u1ee5 th\u1ec3, th\u01b0\u1eddng l\u00e0 30 mA cho b\u1ea3o v\u1ec7 con ng\u01b0\u1eddi ho\u1eb7c 100 mA ho\u1eb7c 300 mA cho b\u1ea3o v\u1ec7 thi\u1ebft b\u1ecb. V\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt, RCCB li\u00ean t\u1ee5c so s\u00e1nh l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n ra kh\u1ecfi m\u1ea1ch qua d\u00e2y d\u1eabn s\u1ed1ng v\u1edbi l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n tr\u1edf v\u1ec1 m\u1ea1ch qua d\u00e2y trung t\u00ednh. Trong m\u1ed9t m\u1ea1ch b\u00ecnh th\u01b0\u1eddng, l\u01b0\u1ee3ng d\u00f2ng \u0111i\u1ec7n n\u00e0y l\u00e0 b\u1eb1ng nhau. Tuy nhi\u00ean, khi m\u1ed9t ng\u01b0\u1eddi ch\u1ea1m v\u00e0o ai \u0111\u00f3 ho\u1eb7c m\u1ed9t v\u1eadt g\u00ec \u0111\u00f3 c\u00f3 \u0111i\u1ec7n, m\u1ed9t ph\u1ea7n d\u00f2ng \u0111i\u1ec7n s\u1ebd \u0111i xu\u1ed1ng \u0111\u1ea5t thay v\u00ec tr\u1edf v\u1ec1 qua d\u00e2y trung t\u00ednh. M\u1ed9t RCCB c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n nh\u01b0 v\u1eady v\u00e0 ph\u1ea3n \u1ee9ng g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c; do \u0111\u00f3, n\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng nh\u1eefng ng\u01b0\u1eddi b\u1ecb \u0111i\u1ec7n gi\u1eadt tr\u00e1nh \u0111\u01b0\u1ee3c c\u00e1i ch\u1ebft.<\/p>\n

M\u1ed9t trong nh\u1eefng h\u1ea1n ch\u1ebf ch\u00ednh c\u1ee7a RCCB l\u00e0 n\u00f3 kh\u00f4ng ph\u00e1t hi\u1ec7n qu\u00e1 t\u1ea3i ho\u1eb7c ng\u1eafn m\u1ea1ch. N\u1ebfu m\u1ed9t m\u1ea1ch ti\u00eau th\u1ee5 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn d\u00f2ng \u0111i\u1ec7n do c\u00e1c thi\u1ebft b\u1ecb k\u1ebft n\u1ed1i ho\u1eb7c x\u1ea3y ra ng\u1eafn m\u1ea1ch gi\u1eefa d\u00e2y s\u1ed1ng v\u00e0 d\u00e2y trung t\u00ednh, RCCB s\u1ebd kh\u00f4ng k\u00edch ho\u1ea1t v\u00ec t\u1ed5ng d\u00f2ng \u0111i\u1ec7n l\u00e0 nh\u01b0 nhau v\u00e0 v\u1eabn gi\u1eef c\u00e2n b\u1eb1ng. RCCB s\u1ebd th\u1ea5y m\u1ed9t d\u00f2ng \u0111i\u1ec7n l\u1edbn trong m\u1ea1ch trong khi m\u1ea1ch v\u1eabn c\u00e2n b\u1eb1ng, v\u00ec v\u1eady kh\u00f4ng c\u1ea7n ph\u1ea3i l\u00e0m g\u00ec c\u1ea3. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao RCCB lu\u00f4n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t n\u1ed1i ti\u1ebfp v\u1edbi m\u1ed9t MCB (B\u1ed9 Ng\u1eaft M\u1ea1ch Miniature) ho\u1eb7c m\u1ed9t c\u1ea7u ch\u00ec cung c\u1ea5p b\u1ea3o v\u1ec7 cho qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch. Th\u00f4ng th\u01b0\u1eddng, c\u00f3 m\u1ed9t RCCB trong t\u1ee7 \u0111i\u1ec7n c\u1ee7a ng\u00f4i nh\u00e0 b\u1ea3o v\u1ec7 nhi\u1ec1u m\u1ea1ch, m\u1ed7i m\u1ea1ch \u0111\u1ec1u c\u00f3 m\u1ed9t MCB. \u0110\u00e2y l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p sinh l\u1ee3i, nh\u01b0ng l\u1ea1i c\u00f3 m\u1ed9t nh\u01b0\u1ee3c \u0111i\u1ec3m nghi\u00eam tr\u1ecdng l\u00e0 khi x\u1ea3y ra l\u1ed7i trong m\u1ed9t m\u1ea1ch, RCCB s\u1ebd ng\u1eaft t\u1ea5t c\u1ea3 c\u00e1c m\u1ea1ch c\u1ee7a h\u1ec7 th\u1ed1ng thay v\u00ec ch\u1ec9 m\u1ea1ch b\u1ecb l\u1ed7i.<\/p>\n

\"RCCB\"<\/p>\n

M\u1ed9t RCBO l\u00e0 g\u00ec? B\u1ea3o v\u1ec7 D\u00f2ng R\u00f2, Qu\u00e1 T\u1ea3i v\u00e0 Ng\u1eafn M\u1ea1ch trong M\u1ed9t Thi\u1ebft B\u1ecb<\/h2>\n

M\u1ed9t RCBO (C\u1ea7u dao d\u00f2ng r\u00f2 v\u1edbi qu\u00e1 d\u00f2ng) k\u1ebft h\u1ee3p ch\u1ee9c n\u0103ng ph\u00e1t hi\u1ec7n d\u00f2ng r\u00f2 c\u1ee7a m\u1ed9t RCCB v\u1edbi b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch c\u1ee7a m\u1ed9t MCB trong m\u1ed9t \u0111\u01a1n v\u1ecb nh\u1ecf g\u1ecdn ph\u00f9 h\u1ee3p v\u1edbi c\u00f9ng m\u1ed9t kh\u00f4ng gian ray DIN nh\u01b0 m\u1ed9t \u0111\u1ebfn hai m\u00f4-\u0111un ti\u00eau chu\u1ea9n. M\u1ed9t RCBO cung c\u1ea5p b\u1ea3o v\u1ec7 ho\u00e0n to\u00e0n cho m\u1ed9t m\u1ea1ch cu\u1ed1i c\u00f9ng, v\u00ec n\u00f3 ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean d\u00f2ng r\u00f2 (th\u01b0\u1eddng l\u00e0 d\u00f2ng l\u1ed7i 30 mA cho b\u1ea3o v\u1ec7 con ng\u01b0\u1eddi), tr\u00ean qu\u00e1 t\u1ea3i k\u00e9o d\u00e0i (s\u1eed d\u1ee5ng m\u1ed9t ph\u1ea7n nhi\u1ec7t l\u00e0 m\u1ed9t d\u1ea3i kim lo\u1ea1i hai l\u1edbp u\u1ed1n cong khi n\u00f3ng v\u00e0 ng\u1eaft m\u1ea1ch \u1edf d\u00f2ng t\u1eeb 1.13 \u0111\u1ebfn 1.45 gi\u00e1 tr\u1ecb \u0111\u1ecbnh m\u1ee9c), v\u00e0 tr\u00ean ng\u1eafn m\u1ea1ch (s\u1eed d\u1ee5ng m\u1ed9t thi\u1ebft b\u1ecb t\u1eeb t\u00ednh l\u00e0 m\u1ed9t cu\u1ed9n d\u00e2y \u0111i\u1ec7n t\u1eeb, c\u00f3 kh\u1ea3 n\u0103ng ph\u1ea3n \u1ee9ng ngay l\u1eadp t\u1ee9c v\u1edbi l\u1ed7i qu\u00e1 t\u1ea3i). Khi x\u1ea3y ra l\u1ed7i \u0111\u1ea5t trong m\u1ea1ch \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 b\u1edfi RCBO, n\u00f3 s\u1ebd ng\u1eaft ch\u1ec9 RCBO n\u00e0y. C\u00e1c m\u1ea1ch kh\u00e1c - c\u00e1c thi\u1ebft b\u1ecb v\u00e0 \u0111\u00e8n kh\u00e1c - s\u1ebd v\u1eabn \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n. \u0110\u00e2y l\u00e0 l\u1ee3i th\u1ebf ho\u1ea1t \u0111\u1ed9ng ch\u00ednh c\u1ee7a RCBO so v\u1edbi m\u1ed9t RCCB th\u00f4ng th\u01b0\u1eddng: c\u00e1ch ly l\u1ed7i. Vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 nhanh h\u01a1n, v\u00e0 s\u1ef1 gi\u00e1n \u0111o\u1ea1n \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n trong m\u1ed9t m\u1ea1ch duy nh\u1ea5t. \u0110\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 b\u1ed1i c\u1ea3nh r\u1ed9ng l\u1edbn h\u01a1n c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 v\u00e0 c\u00e1ch ch\u00fang \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m v\u00e0 ch\u1ee9ng nh\u1eadn, b\u00e0i vi\u1ebft c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 c\u00e1c c\u1ea7u dao UL 489<\/a> gi\u1ea3i th\u00edch c\u00e1c ti\u00eau chu\u1ea9n \u0111i\u1ec1u ch\u1ec9nh c\u1ea3 MCB v\u00e0 RCBO tr\u00ean th\u1ecb tr\u01b0\u1eddng B\u1eafc M\u1ef9 v\u00e0 qu\u1ed1c t\u1ebf.<\/p>\n

\"RCBO\"<\/p>\n

RCCB so v\u1edbi RCBO: So s\u00e1nh tr\u1ef1c ti\u1ebfp<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u0110\u1eb7c \u0111i\u1ec3m<\/th>\nRCCB (C\u1ea7u dao d\u00f2ng r\u00f2)<\/th>\nRCBO (C\u1ea7u dao d\u00f2ng r\u00f2 v\u1edbi qu\u00e1 d\u00f2ng)<\/th>\n<\/tr>\n<\/thead>\n
B\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c cung c\u1ea5p<\/strong><\/td>\nCh\u1ec9 d\u00f2ng r\u00f2. Kh\u00f4ng c\u00f3 b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i ho\u1eb7c ng\u1eafn m\u1ea1ch.<\/td>\nD\u00f2ng r\u00f2, qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch - b\u1ea3o v\u1ec7 ho\u00e0n ch\u1ec9nh cho m\u1ed9t m\u1ea1ch cu\u1ed1i c\u00f9ng duy nh\u1ea5t.<\/td>\n<\/tr>\n
C\u00f3 ph\u1ea3i k\u1ebft h\u1ee3p v\u1edbi m\u1ed9t MCB kh\u00f4ng?<\/strong><\/td>\nC\u00f3 - m\u1ed9t RCCB ph\u1ea3i lu\u00f4n \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t n\u1ed1i ti\u1ebfp v\u1edbi m\u1ed9t MCB ho\u1eb7c c\u1ea7u ch\u00ec ri\u00eang bi\u1ec7t tr\u00ean m\u1ed7i m\u1ea1ch \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7.<\/td>\nKh\u00f4ng - m\u1ed9t RCBO l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 \u0111\u1ed9c l\u1eadp. N\u00f3 c\u00f3 th\u1ec3 l\u00e0 thi\u1ebft b\u1ecb duy nh\u1ea5t b\u1ea3o v\u1ec7 m\u1ed9t m\u1ea1ch.<\/td>\n<\/tr>\n
C\u00e1ch ly l\u1ed7i<\/strong><\/td>\nM\u1ed9t RCCB \u0111\u01a1n l\u1ebb th\u01b0\u1eddng b\u1ea3o v\u1ec7 nhi\u1ec1u m\u1ea1ch. M\u1ed9t l\u1ed7i \u0111\u1ea5t tr\u00ean b\u1ea5t k\u1ef3 m\u1ed9t trong nh\u1eefng m\u1ea1ch \u0111\u00f3 s\u1ebd ng\u1eaft RCCB v\u00e0 ng\u1eaft t\u1ea5t c\u1ea3 ch\u00fang.<\/td>\nM\u1ed7i RCBO b\u1ea3o v\u1ec7 m\u1ed9t m\u1ea1ch \u0111\u01a1n l\u1ebb. M\u1ed9t l\u1ed7i \u0111\u1ea5t ch\u1ec9 ng\u1eaft RCBO \u0111\u00f3. T\u1ea5t c\u1ea3 c\u00e1c m\u1ea1ch kh\u00e1c v\u1eabn \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n.<\/td>\n<\/tr>\n
K\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd (chi\u1ec1u r\u1ed9ng ray DIN)<\/strong><\/td>\nTh\u01b0\u1eddng l\u00e0 2 m\u00f4-\u0111un (36 mm) cho m\u1ed9t RCCB hai c\u1ef1c; 4 m\u00f4-\u0111un cho m\u1ed9t RCCB b\u1ed1n c\u1ef1c.<\/td>\nTh\u01b0\u1eddng l\u00e0 1 m\u00f4-\u0111un (18 mm) cho m\u1ed9t RCBO m\u1ed9t c\u1ef1c; 2 m\u00f4-\u0111un cho m\u1ed9t RCBO hai c\u1ef1c ho\u1eb7c m\u1ed9t c\u1ef1c v\u1edbi trung t\u00ednh chuy\u1ec3n \u0111\u1ed5i.<\/td>\n<\/tr>\n
Chi ph\u00ed \u0111i\u1ec3n h\u00ecnh m\u1ed7i m\u1ea1ch (ch\u1ec9 thi\u1ebft b\u1ecb, \u01b0\u1edbc t\u00ednh)<\/strong><\/td>\n$15\u2013$40 (RCCB, c\u1ed9ng v\u1edbi $5\u2013$15 cho MCB \u0111i k\u00e8m, c\u1ed9ng v\u1edbi kh\u00f4ng gian ray DIN cho c\u1ea3 hai)<\/td>\n$20\u2013$60 cho m\u1ed7i RCBO. \u0110\u1eaft h\u01a1n m\u1ed7i m\u1ea1ch so v\u1edbi s\u1ef1 k\u1ebft h\u1ee3p RCCB c\u1ed9ng MCB, nh\u01b0ng chi ph\u00ed l\u1eafp \u0111\u1eb7t c\u00f3 th\u1ec3 t\u01b0\u01a1ng t\u1ef1 khi xem x\u00e9t th\u1eddi gian \u0111i d\u00e2y, k\u1ebft n\u1ed1i thanh bus v\u00e0 kh\u00f4ng gian b\u1ea3ng ph\u00e2n ph\u1ed1i.<\/td>\n<\/tr>\n
\u1ee8ng d\u1ee5ng t\u1ed1t nh\u1ea5t<\/strong><\/td>\nB\u1ea3o v\u1ec7 nhi\u1ec1u m\u1ea1ch n\u01a1i chi ph\u00ed l\u00e0 y\u1ebfu t\u1ed1 ch\u00ednh, v\u00e0 n\u01a1i m\u1ed9t l\u1ea7n ng\u1eaft \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec1u m\u1ea1ch l\u00e0 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c - v\u00ed d\u1ee5, trong m\u1ed9t l\u1eafp \u0111\u1eb7t d\u00e2n c\u01b0 nh\u1ecf ho\u1eb7c m\u1ed9t d\u1ef1 \u00e1n b\u1ecb h\u1ea1n ch\u1ebf ng\u00e2n s\u00e1ch.<\/td>\nB\u1ea3o v\u1ec7 c\u00e1c m\u1ea1ch cu\u1ed1i ri\u00eang l\u1ebb n\u01a1i vi\u1ec7c c\u00e1ch ly l\u1ed7i, d\u1ec5 d\u00e0ng kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 v\u00e0 gi\u1ea3m thi\u1ec3u gi\u00e1n \u0111o\u1ea1n \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao \u2014 ti\u00eau chu\u1ea9n cho c\u00e1c l\u1eafp \u0111\u1eb7t d\u00e2n c\u01b0 v\u00e0 th\u01b0\u01a1ng m\u1ea1i hi\u1ec7n \u0111\u1ea1i, v\u00e0 c\u1ea5u h\u00ecnh \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb trong h\u1ea7u h\u1ebft c\u00e1c quy \u0111\u1ecbnh \u0111i\u1ec7n qu\u1ed1c gia cho x\u00e2y d\u1ef1ng m\u1edbi.<\/td>\n<\/tr>\n
N\u00f3 c\u00f3 ng\u1eaft khi qu\u00e1 t\u1ea3i kh\u00f4ng?<\/strong><\/td>\nKh\u00f4ng. M\u1ed9t RCCB s\u1ebd mang d\u00f2ng \u0111\u1ecbnh m\u1ee9c c\u1ee7a n\u00f3 v\u00f4 th\u1eddi h\u1ea1n v\u00e0 s\u1ebd kh\u00f4ng ng\u1eaft khi qu\u00e1 t\u1ea3i. B\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i ph\u1ea3i \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi m\u1ed9t MCB ri\u00eang bi\u1ec7t.<\/td>\nC\u00f3. Y\u1ebfu t\u1ed1 nhi\u1ec7t t\u00edch h\u1ee3p s\u1ebd ng\u1eaft khi qu\u00e1 t\u1ea3i k\u00e9o d\u00e0i, gi\u1ed1ng nh\u01b0 m\u1ed9t MCB ti\u00eau chu\u1ea9n. \u0110\u1ecbnh m\u1ee9c d\u00f2ng c\u1ee7a RCBO (6 A, 10 A, 16 A, 20 A, 25 A, 32 A, 40 A, 50 A, 63 A) l\u00e0 d\u00f2ng \u0111\u1ecbnh m\u1ee9c c\u1ee7a m\u1ea1ch.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\"So<\/p>\n

Khi n\u00e0o s\u1eed d\u1ee5ng RCCB so v\u1edbi khi n\u00e0o s\u1eed d\u1ee5ng RCBO<\/h2>\n

Khi l\u1ef1a ch\u1ecdn gi\u1eefa RCCB v\u00e0 RCBO, h\u1ea7u h\u1ebft c\u00e1c y\u1ebfu t\u1ed1 \u0111\u1ec1u c\u00f3 \u1ea3nh h\u01b0\u1edfng bao g\u1ed3m k\u00edch th\u01b0\u1edbc c\u1ee7a l\u1eafp \u0111\u1eb7t, m\u1ee9c \u0111\u1ed9 c\u00e1ch ly l\u1ed7i c\u1ea7n thi\u1ebft, ng\u00e2n s\u00e1ch v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n \u0111i\u1ec7n \u00e1p d\u1ee5ng trong m\u1ed9t khu v\u1ef1c c\u1ee5 th\u1ec3. Trong m\u1ed9t \u0111\u01a1n v\u1ecb d\u00e2n c\u01b0 nh\u1ecf nh\u01b0 c\u0103n h\u1ed9 ho\u1eb7c nh\u00e0 nh\u1ecf, kh\u00e1 ph\u1ed5 bi\u1ebfn \u0111\u1ec3 c\u00f3 m\u1ed9t c\u1ea5u h\u00ecnh m\u00e0 RCCB b\u1ea3o v\u1ec7 nhi\u1ec1u m\u1ea1ch, m\u1ed7i m\u1ea1ch c\u00f3 MCB ri\u00eang. V\u1edbi c\u1ea5u h\u00ecnh nh\u01b0 v\u1eady, chi ph\u00ed ph\u00e1t sinh s\u1ebd \u00edt h\u01a1n so v\u1edbi vi\u1ec7c c\u00f3 m\u1ed9t RCBO cho m\u1ed7i m\u1ea1ch. H\u01a1n n\u1eefa, trong tr\u01b0\u1eddng h\u1ee3p RCCB b\u1ecb ng\u1eaft do s\u1ef1 c\u1ed1, ng\u01b0\u1eddi s\u1ed1ng trong m\u1ed9t c\u0103n h\u1ed9 nh\u1ecf s\u1ebd th\u1ea5y d\u1ec5 ch\u1ecbu, v\u00ec b\u1ea3ng ph\u00e2n ph\u1ed1i d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn. V\u1edbi c\u00e1c d\u1ef1 \u00e1n d\u00e2n c\u01b0 l\u1edbn h\u01a1n v\u00e0 c\u00e1c doanh nghi\u1ec7p th\u01b0\u01a1ng m\u1ea1i, ng\u01b0\u1eddi ta kh\u00f4ng hi\u1ec3u l\u00e0m th\u1ebf n\u00e0o vi\u1ec7c ch\u1ec9 s\u1eed d\u1ee5ng RCCB c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p t\u1ed1t; r\u00f5 r\u00e0ng r\u1eb1ng c\u00e1c RCBO tr\u00ean t\u1ea5t c\u1ea3 c\u00e1c m\u1ea1ch cu\u1ed1i n\u00ean \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. RCBO ch\u1eafc ch\u1eafn \u0111\u1eaft h\u01a1n so v\u1edbi s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a RCCB c\u1ed9ng v\u1edbi MCB, nh\u01b0ng s\u1ed1 ti\u1ec1n n\u00e0y dao \u0111\u1ed9ng t\u1eeb $ 10 \u0111\u1ebfn $ 30 cho m\u1ed7i m\u1ea1ch m\u00e0 ch\u1ee7 s\u1edf h\u1eefu c\u00f3 th\u1ec3 thu h\u1ed3i t\u1eeb l\u1ed7i \u0111\u1ea7u ti\u00ean x\u1ea3y ra trong l\u1eafp \u0111\u1eb7t.<\/p>\n

\u0110\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a c\u00e1c nh\u00e0 th\u1ea7u \u0111i\u1ec7n v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7, HUYU s\u1ea3n xu\u1ea5t m\u1ed9t lo\u1ea1t c\u00e1c RCCB v\u00e0 RCBO v\u1edbi c\u00e1c \u0111\u1ecbnh m\u1ee9c d\u00f2ng kh\u00e1c nhau, \u0111\u1ed9 nh\u1ea1y v\u1edbi d\u00f2ng r\u00f2 v\u1edbi c\u00e1c t\u00f9y ch\u1ecdn 10 mA, 30 mA, 100 mA ho\u1eb7c 300 mA v\u00e0 c\u00e1c \u0111\u01b0\u1eddng cong ng\u1eaft nh\u01b0 B, C v\u00e0 D \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau ch\u00ed trong tr\u01b0\u1eddng h\u1ee3p b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o li\u00ean quan \u0111\u1ebfn s\u1eed d\u1ee5ng d\u00e2n d\u1ee5ng, th\u01b0\u01a1ng m\u1ea1i v\u00e0 c\u00f4ng nghi\u1ec7p nh\u1eb9. RCBO c\u1ee7a HUYU, ch\u1eb3ng h\u1ea1n nh\u01b0 <\/span>HUM18LE\u201163 RCBO<\/a>, k\u1ebft h\u1ee3p b\u1ea3o v\u1ec7 r\u00f2 \u0111\u1ea5t, qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch trong m\u1ed9t thi\u1ebft b\u1ecb nh\u1ecf g\u1ecdn duy nh\u1ea5t, v\u1edbi c\u00e1c ch\u1ee9ng nh\u1eadn (CE, TUV, CB) v\u00e0 hi\u1ec7u su\u1ea5t \u0111\u01b0\u1ee3c t\u00e0i li\u1ec7u h\u00f3a m\u00e0 m\u1ed9t l\u1eafp \u0111\u1eb7t chuy\u00ean nghi\u1ec7p y\u00eau c\u1ea7u. \u0110\u1ed1i v\u1edbi c\u00e1c m\u1ea1ch c\u00f3 th\u1ec3 tr\u1ea3i qua r\u00f2 DC \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 nh\u1eefng m\u1ea1ch ph\u1ee5c v\u1ee5 b\u1ed9 s\u1ea1c EV, b\u1ed9 bi\u1ebfn t\u1ea7n n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi ho\u1eb7c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ed1c \u0111\u1ed9 bi\u1ebfn thi\u00ean \u2014 m\u1ed9t RCCB ho\u1eb7c RCBO lo\u1ea1i B, ch\u1eb3ng h\u1ea1n nh\u01b0 <\/span>RCBO lo\u1ea1i B VRL22B c\u1ee7a HUYU<\/a>, cung c\u1ea5p ph\u00e1t hi\u1ec7n d\u00f2ng r\u00f2 th\u00edch h\u1ee3p cho c\u00e1c d\u00f2ng l\u1ed7i AC\/DC h\u1ed7n h\u1ee3p m\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra. \u0110\u1ec3 \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 trong vi\u1ec7c ch\u1ecdn \u0111\u1ecbnh m\u1ee9c thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p cho m\u1ed9t m\u1ea1ch c\u1ee5 th\u1ec3, h\u01b0\u1edbng d\u1eabn c\u1ee7a ch\u00fang t\u00f4i v\u1ec1 <\/span>k\u00edch th\u01b0\u1edbc c\u1ea7u dao b\u1ea1n c\u1ea7n<\/a> bao g\u1ed3m quy tr\u00ecnh x\u00e1c \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc d\u1ef1a tr\u00ean NEC cho c\u1ea3 t\u1ea3i chung v\u00e0 t\u1ea3i \u0111\u1ed9ng c\u01a1.<\/span><\/p>\n

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

RCBO hay RCCB c\u00e1i n\u00e0o t\u1ed1t h\u01a1n?<\/h3>\n

Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, RCBO cung c\u1ea5p b\u1ea3o v\u1ec7 t\u1ed1t h\u01a1n cho c\u00e1c m\u1ea1ch cu\u1ed1i \u0111\u1ed9c l\u1eadp so v\u1edbi RCCB, v\u00ec RCBO k\u1ebft h\u1ee3p b\u1ea3o v\u1ec7 r\u00f2 r\u1ec9 \u0111\u1ea5t, qu\u00e1 t\u1ea3i v\u00e0 b\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch trong m\u1ed9t \u0111\u01a1n v\u1ecb v\u00e0 c\u00f4 l\u1eadp c\u00e1c s\u1ef1 c\u1ed1 ch\u1ec9 v\u00e0o m\u1ed9t m\u1ea1ch. RCCB \u0111\u1ea1i di\u1ec7n cho m\u1ed9t l\u1ef1a ch\u1ecdn r\u1ebb h\u01a1n \u0111\u1ec3 cung c\u1ea5p b\u1ea3o v\u1ec7 r\u00f2 r\u1ec9 \u0111\u1ea5t cho nhi\u1ec1u m\u1ea1ch c\u00f9ng m\u1ed9t l\u00fac, nh\u01b0ng n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u1edbi m\u1ed9t MCB ri\u00eang bi\u1ec7t \u0111\u1ec3 b\u1ea3o v\u1ec7 t\u1eebng m\u1ea1ch, v\u00e0 kh\u00f4ng gi\u1ed1ng nh\u01b0 RCBO, n\u00f3 kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u01a1 s\u1edf c\u00f4 l\u1eadp m\u1ea1ch, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 s\u1ef1 c\u1ed1, RCCB ng\u1eaft t\u1ea5t c\u1ea3 c\u00e1c m\u1ea1ch \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7.<\/p>\n

RCBO c\u00f3 th\u1ec3 thay th\u1ebf RCCB kh\u00f4ng?<\/h3>\n

Ch\u1eafc ch\u1eafn r\u1ed3i. RCBO c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng thay cho RCCB \u0111\u1ec3 b\u1ea3o v\u1ec7 m\u1ea1ch cu\u1ed1i v\u00e0 n\u00f3 cung c\u1ea5p nhi\u1ec1u t\u00f9y ch\u1ecdn an to\u00e0n h\u01a1n \u2014 r\u00f2 r\u1ec9 \u0111\u1ea5t, qu\u00e1 t\u1ea3i v\u00e0 ng\u1eafn m\u1ea1ch \u2014 trong m\u1ed9t h\u1ed9p. RCBO kh\u00f4ng th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t RCCB \u0111a m\u1ea1ch v\u00ec n\u00f3 ch\u1ec9 b\u1ea3o v\u1ec7 m\u1ed9t m\u1ea1ch cu\u1ed1i duy nh\u1ea5t. Khi c\u00f3 tr\u01b0\u1eddng h\u1ee3p m\u1ed9t h\u1ec7 th\u1ed1ng s\u1eed d\u1ee5ng m\u1ed9t RCCB cho nhi\u1ec1u m\u1ea1ch, vi\u1ec7c thay th\u1ebf RCCB \u0111\u00f3 b\u1eb1ng c\u00e1c RCBO \u0111\u01a1n l\u1ebb tr\u00ean m\u1ed7i m\u1ea1ch c\u00f3 th\u1ec3 cung c\u1ea5p b\u1ea3o v\u1ec7 t\u1ed1t h\u01a1n ch\u1ed1ng l\u1ea1i c\u00e1c s\u1ef1 c\u1ed1 v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 ch\u00ednh x\u00e1c trong vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1, nh\u01b0ng n\u00f3 c\u0169ng y\u00eau c\u1ea7u b\u1ea3ng ph\u00e2n ph\u1ed1i ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ea5u d\u00e2y l\u1ea1i.<\/p>\n

RCCB c\u00f3 ng\u1eaft khi qu\u00e1 t\u1ea3i kh\u00f4ng?<\/h3>\n

Kh\u00f4ng. RCCB kh\u00f4ng ng\u1eaft trong tr\u01b0\u1eddng h\u1ee3p qu\u00e1 t\u1ea3i. N\u00f3 ch\u1ec9 ph\u00e1t hi\u1ec7n r\u00f2 r\u1ec9 \u0111\u1ea5t, \u0111\u00f3 l\u00e0 s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng gi\u1eefa d\u00f2ng \u0111i\u1ec7n s\u1ed1ng v\u00e0 d\u00f2ng \u0111i\u1ec7n trung t\u00ednh. Trong tr\u01b0\u1eddng h\u1ee3p m\u1ed9t m\u1ea1ch b\u1ecb qu\u00e1 t\u1ea3i, RCCB v\u1eabn s\u1ebd ti\u1ebfp t\u1ee5c d\u1eabn d\u00f2ng cho \u0111\u1ebfn khi d\u00e2y m\u1ea1ch b\u1ecb h\u01b0 h\u1ecfng do qu\u00e1 nhi\u1ec7t tr\u1eeb khi n\u00f3 c\u00f3 m\u1ed9t c\u1ea7u ch\u00ec ho\u1eb7c MCB ri\u00eang \u0111\u1ec3 b\u1ea3o v\u1ec7 ch\u1ed1ng l\u1ea1i qu\u00e1 t\u1ea3i. Do \u0111\u00f3, c\u1ea7n thi\u1ebft ph\u1ea3i lu\u00f4n k\u1ebft n\u1ed1i RCCB c\u00f9ng v\u1edbi m\u1ed9t MCB ho\u1eb7c c\u1ea7u ch\u00ec cho m\u1ed7i m\u1ea1ch.<\/p>\n

C\u00e1i n\u00e0o t\u1ed1t h\u01a1n, RCD hay RCBO?<\/h3>\n

Thu\u1eadt ng\u1eef RCD (Thi\u1ebft b\u1ecb d\u00f2ng \u0111i\u1ec7n d\u01b0) \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t lo\u1ea1i chung h\u01a1n bao g\u1ed3m RCCB v\u00e0 RCBO. M\u1ecdi ng\u01b0\u1eddi th\u01b0\u1eddng nh\u1ea7m l\u1eabn RCD v\u00e0 RCBO v\u1edbi RCCB v\u00e0 RCBO. RCBO t\u1ed1t h\u01a1n trong vi\u1ec7c b\u1ea3o v\u1ec7 m\u1ed9t m\u1ea1ch cu\u1ed1i duy nh\u1ea5t v\u00ec n\u00f3 k\u1ebft h\u1ee3p b\u1ea3o v\u1ec7 l\u1ed7i \u0111\u1ea5t, b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i, b\u1ea3o v\u1ec7 ng\u1eafn m\u1ea1ch v\u00e0 kh\u1ea3 n\u0103ng c\u00f4 l\u1eadp s\u1ef1 ki\u1ec7n tr\u00ean m\u1ea1ch. RCCB (ho\u1eb7c RCD chia s\u1ebb) l\u00e0 m\u1ed9t c\u00e1ch r\u1ebb h\u01a1n \u0111\u1ec3 cung c\u1ea5p b\u1ea3o v\u1ec7 l\u1ed7i \u0111\u1ea5t tr\u00ean nhi\u1ec1u m\u1ea1ch, m\u1eb7c d\u00f9 n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi c\u00e1c MCB ri\u00eang bi\u1ec7t v\u00e0 kh\u00f4ng bao g\u1ed3m vi\u1ec7c c\u00f4 l\u1eadp l\u1ed7i ch\u00ednh n\u00f3.<\/p>\n

T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n