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Feb 07,2023

About DC contactor

The DC contactor adopts a modular design, which can assemble the number of contacts required by the customer and the contact form (normally open, normally closed and conversion) required by the customer with the least number of parts; the c···
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Feb 01,2023

How to choose best quality and price Circuit breaker ?

Circuit breaker is a kind of protective device for the line, which mainly protects the line from damage due to overload, short circuit and undervoltage. Its function is to automatically trip and cut off the load power supply in case of shor···
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Dec 06,2022

Relay Selection Principles

When selecting a relay, factors such as the type of power supply, the rated voltage and current of the contacts, the rated voltage or current of the coil, the combination and number of contacts, engagement time and release time should be co···
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Nov 26,2022

Principle of Molded Case Circuit Breaker for Electronic Devices

The key connection points of molded case circuit breakers for electronic devices are manual or electric connection. After the main connection is closed, the free traction mechanism locks the main connection at the connection position. The e···
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Nov 17,2022

Troubleshooting method for terminal failure of molded case circuit breaker and contactor

The molded case circuit breaker can automatically cut off the current after the current exceeds the trip setting. Molded case refers to the use of plastic insulators as the casing of the device to isolate conductors and grounded metal parts···
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Jan 08,2022

The 17th. Iran International Electricity Exhibition

Yueqing Longchen Electric participated in November 2017 the 17th. Iran International Electricity Exhibition. At this exhibition, we exhibited various new electrical products and were welcomed by Iranian customers. Some customers are plannin···
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