CMTB1-63H 4P High Breaking Capacity Mcb Miniature Circuit Breaker

Short Description:

CMTB1-63 miniature circuit breaker has short circuit and overload protection function,also can used as an unfrequent transfer and conversion of power system. The MCB has features of structure advanced, performance reliable, high breaking capacity, appearance elegant and the shell and parts are made of material with impact resistance, strong flame-retardant .

It conforms with standard IEC/EN60898-1.

CMTB1-63 MCB is applicable for 50/60Hz AC, Rated voltage 230V/240V/400V/415V, Rated current 63A and below.

Product Detail

Product Tags

Product Details

CMTB1-63 miniature circuit breaker can protect the current from short circuit and overload , also can used as an unfrequent transfer and conversion of power system. The miniature circuit breaker is an essential component of any electrical system, providing reliable protection against electrical hazards and ensuring the safe and efficient operation of electrical circuits and devices.

Product name Miniature Circuit Breaker MCB
Model NO. CMTB1-63 4P
Standard  IEC60898-1
Certificate CE
Rated current In (A) 1/2/3/4/5/6/8/10/13/16/20/25/32/40/50/63A
Poles 4P
Rated voltage Ue (V) 400/415V
Rated frequency AC 50/60Hz
Rated short circuit capacity Icn 6000A
Rated impulse withstand voltage Uimp 4000V
Ambient temperature -20℃~+40℃
Type of instantaneous release C D
Color white and grey
Service OEM & ODM


C63 1P
C63 2P
C63 3P
C63 4P


The MCB Miniature circuit breakers are professional & widely used in building, residence, industrial applications , electric power transmission.



1.Protection of circuits against short circuit current
2.Protection of circuits against overload current
3.High breaking capacity
4.Nice design and easy to install



3 pcs per inner box, 60 pcs per outer box .
Dimension per outer box: 41*21.5*41.5 cm

Q & C

Mutai is qualified with ISO 9001, ISO14001 management system certificates,  and the products are pass the CCC, CE, CB ...etc certificate.

Main Market

The products is welcomed by customers , expecially in Middle East, Africa, South East Asia, South America, Russia Market.

1. Main products: MCB, MCCB, ACB, RCBO, RCCB, ATS, Contactor... etc.
2.Completed industrial chain from component production to complete products assembly, testing and under routine control.
3.With ISO 9001, ISO14001 management system certificates, the products are qualified by international certificates CCC, CE, CB.
4.Professional technical team, can provide OEM and ODM service , can supply competitive price.
5.Fast delivery time and good after-sale service.

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