With thermal-magnetic trip technology, fast fault isolation, and long mechanical life, Xifa Molded Case Circuit Breaker MCCB safeguard transformers, switchgear, and electrical panels. Widely applied in industrial plants, urban construction, renewable energy stations, and compact substations, Xifa offers ISO-certified quality, OEM/ODM support, and CE/UL compliance, ensuring safe, durable, and cost-effective power solutions.
A molded case circuit breaker MCCB is a electrical protection device to offer the overload protection and short circuit protection in low voltage electrical circuit. Unlike a isolation switch, a molded case circuit breaker can be operated under load. A molded case circuit breaker MCCB usually is installed on the downstream of an air circuit breaker ACB. It is because the rated current range is up to 1600 A and the breaking current is usually up to 80 kA, which is more capable to control the branch electrical circuit.
Additionally, a molded case circuit breaker MCCB could equips extra components to extend functionality, such as motor driver, contacts, and trip unit.
A Molded Case Circuit Breaker MCCB normally be used whenever you need overload protection, short circuit protection or controlled switching in three phase four wire low voltage electrical system. The main application case can be show as the below:
1. The main circuit breaker for commercial and industrial buildings in the low voltage distribution panels;
2. Feeder protections for branch circuits, such as in a 10/0.4 kv compact substation.
3. Large motor circuits or motor control centers.
