Circuit Breakers – Branch and Supplementary

ABB MCBs are available with a wide variety of accessories and providing solutions for all types of applications-Branch and Supplementary.

UL1077 and UL489 miniature circuit breakers (MCBs) ensure electrical safety in multiple applications. These MCBs feature two different tripping mechanisms, the delayed thermal tripping mechanism for overload protection, and the magnetic tripping mechanism for short circuit protection.

UL1077 – (Supplementary protector)

1. Offers Characteristics: B, C, D, K, Z
2. Rated current up to 63A
3. Configurations: 1P, 1P+N, 2P, 3P, 3P+N, 4P
4. Breaking capacities: 25kA

UL489 – (Branch circuit breaker)

1. Offers Characteristics: C, K and Z
2. Rated current up to 63A
3. Configurations: 1P, 1P+N, 2P, 3P, 3P+N, 4P
4. Breaking capacities: 25kA