China Electric Motor Protection Circuit Breaker Knob Control Manufacturers, Suppliers, Factory

Molded Case Circuit Breaker (MCCB), translated as "molded case circuit breaker" in Chinese, is a commonly used electrical protection device used to protect circuits from overload, short circuit and other faults. MCCB usually consists of electrical thermomagnetic components and mechanical triggering mechanism.

The thermal relay is one of the most commonly encountered electrical control components. It mainly plays the role of protecting the motor and preventing the motor from overloading. Most thermal relays are cheap, economical and practical.

Molded case circuit breakers are also called device circuit breakers. All parts are sealed in plastic casings. Auxiliary contacts, undervoltage releases and shunt releases are mostly modularized. Due to the very compact structure, molded case circuit breakers are basically impossible to repair. Most of them are manually operated, and electric opening and closing can be selected for large capacity. Due to the application of electronic overcurrent releases, molded case circuit breakers can also be divided into Class A and Class B. Class B has good three-stage protection characteristics, but due to price factors, the use of thermal magnetic releases Class A products have a higher market share.

The 250A Molded Case Circuit Breaker is a circuit breaker that guards against overloads, short circuits, and ground faults in electrical systems and equipment. The circuit breaker is capable of handling up to 250 amps, as shown by the "250A" label. It is frequently utilized for residential, commercial, and industrial applications to protect electrical systems.

The 630A Molded Case Circuit Breaker with LCD Display is a protective device used in power systems to protect circuits from overload, short circuit, ground fault, etc. This circuit breaker has the characteristics of high breaking capacity, strong reliability, safety and reliability, and is widely used in various power systems.

The breaking capacity of a 400A MCCB (Molded Case Circuit Breaker) is the maximum current level that the circuit breaker is capable of interrupting safely without causing damage to the electrical system or equipment. The breaking capacity is typically expressed in terms of both the interrupting current rating and the short-circuit current rating.