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What is a Molded Case Circuit Breaker
Molded case circuit breakers(MCCB) can automatically cut off the current after the current exceeds the trip setting. Molded case refers to the use of plastic insulators as the outer shell of the device to isolate the conductors and the grounded metal parts. Commonly used rated currents are as fo...Read More -
Why should a surge protector be installed in the distribution box?
What is the role of the surge protection device(SPD) in the distribution box: A surge protector is installed behind the input circuit breaker inside the distribution box, and its main function is lightning protection. Its full name is: lightning surge protector. This overvoltage protection devic...Read More -
Components of AC contactor
The control principle of the AC contactor is very simple. When the coil is connected to the rated voltage, an electromagnetic force is generated to overcome the spring reaction force, attracting the moving iron core to move downward, and the moving iron core drives the insulating connecting rod ...Read More -
Introduction to types of circuit breakers
A circuit breaker is a switching device that can automatically open or close a circuit. It is mainly used to control and protect circuits and electrical equipment to prevent overload, short circuit, undervoltage and other faults. There are many types of circuit breakers. According to different st...Read More -
The difference between PC ATS and CB ATS
Automatic transfer switch is referred to as ATS. It automatically connects to the backup power supply through the dual power switch when the power is suddenly cut off, so that our operation will not be interrupted and can continue to operate. The purpose of the dual power automatic transfer swit...Read More -
What is the Residual Current Circuit Breaker (RCCB)
The use of electricity has brought a lot of convenience to modern people’s lives and work. However, electricity can easily leak, causing short circuits, burnouts, etc., leading to fires, electric shocks, and great harm to people. economic losses and life threats. Thus, Residual Current Cir...Read More -
What do the parameters on MCB represent?
Miniature circuit breakers (MCB) are mainly used to protect circuits from short circuits and overloads, and can also be used in power distribution systems for lighting or motors. It is characterized by beautiful and compact appearance, light weight, excellent and reliable performance, high breaki...Read More -
The difference between Surge Protective Device and Overvoltage Protector
Surge protective device and overvoltage protectors are two commonly used electrical equipment protection devices. They can limit or discharge transient overvoltage in the power system and prevent electrical equipment from being damaged by lightning or other causes. However, their working princip...Read More -
What are NO and NC on the AC contactor ?
AC contactor is a very commonly used electrical component in industrial control. Among the contacts of the AC contactor, in addition to the main contacts (both normally open contacts), there are also auxiliary contacts. There are normally open and normally closed auxiliary contacts. There is a ma...Read More -
What are the faults of air circuit breakers(ACB)?
1. The air circuit breaker tripped and failed to reclose: First, determine whether the air circuit breaker tripped non-accidentally. Non-accidental tripping means that it tripped without short circuit or overload fault. There are many reasons why the air circuit breaker cannot close. First, it i...Read More -
Knowledge related to dual power automatic transfer switch
Automatic Transfer Switch, referred to as ATS, is a key power switching device used in uninterruptible power supply systems. Its main function is to automatically switch the load to the backup power supply when the main power supply fails to ensure continuous power supply for critical loads. The...Read More -
What material are the contacts of MCCB made of?
The contact material of molded case circuit breaker is mainly silver alloy, which has good electrical conductivity, wear resistance and thermal stability. Silver alloy contacts are often used to ensure the normal operation of circuit breakers and extend their service life. Other commonly used co...Read More
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