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What are the structural features of Molded case circuit breaker?

Publish Time: 2024-01-23
Molded case circuit breaker is a circuit breaker widely used in low-voltage power distribution systems and industrial automation systems. Its structural features mainly include the following aspects:
The shell of the Molded case circuit breaker is made of plastic insulating material, which has good electrical insulation properties and good flame retardant properties, ensuring the safe operation of the circuit breaker.
Molded case circuit breaker has an independent contact system and operating mechanism, which can realize the breaking and making functions of the circuit breaker. The contact system generally uses silver alloy or copper alloy materials, which have good electrical conductivity and wear resistance.
The operating mechanism of the molded case circuit breaker generally adopts a spring or electromagnetic drive method, which can achieve rapid action and reliable breaking of the circuit breaker. At the same time, the operating mechanism also has a manual operation function, which can manually break and connect when the circuit breaker fails.
Molded case circuit breaker has a variety of protection functions, such as overload protection, short circuit protection, undervoltage protection, etc., which can achieve comprehensive protection of the circuit. And the protection function of the Molded case circuit breaker can be customized by adjusting the internal components to meet the needs of different circuit systems.
Molded case circuit breaker has a compact design, small size, and takes up little space, making it easy to install and use. At the same time, the terminal blocks of the Molded case circuit breaker use standard jacks for easy wiring.
Molded case circuit breaker has complete mechanical and electrical interlocking devices to ensure safe operation and easy operation of the circuit breaker. For example, when the circuit breaker is closed, mechanical and electrical interlocking devices can prevent misoperation and accidental electric shock.
Molded case circuit breaker also features high sensitivity and low power consumption. For example, when a short circuit fault occurs, the molded case circuit breaker can act quickly and interrupt the fault current while consuming low power and not placing an excessive burden on the system.
In general, the structural features of Molded case circuit breaker include good insulation performance, independent contact system and operating mechanism, multiple protection functions, compact design, complete interlocking device and high sensitivity and low power consumption. These characteristics make the Molded case circuit breaker one of the indispensable components in low-voltage power distribution systems and industrial automation systems.
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