Media Center

Meet you at the 128th Canton Fair Online 2020

Meet you at the 128th Canton Fair Online 2020

Meet you at the 128th Canton Fair Online 2020 ...

Detailed introduction of contactor

Detailed introduction of contactor

As an electromagnetic relay commonly used in electrical control systems, contactors have many specifications. Generally, the contactor controls the cl ...

Common faults of leakage circuit breakers

Common faults of leakage circuit breakers

Put into trip 1) The three-phase power line, including the neutral line, does not pass through the zero sequence current transformer in the same dire ...

The difference between circuit breaker and MCB

The difference between circuit breaker and MCB

The circuit breaker uses air as a medium for arc extinguishing, so it is also called an air-type low-voltage circuit breaker. Because of its conveni ...

What are the levels of current transformers

What are the levels of current transformers

The accurate level of the current transformer is the measurement error (zhi accuracy) dao of du, generally 0.2, inner 0.5, 1.0, 0.2S, 0.5S, 5P, 10P, ...

The design points of miniature circuit breaker

The design points of miniature circuit breaker

⑴ The coordination of circuit breaker and circuit breaker should consider the instantaneous release action value of the upper-level circuit breaker, w ...

Precautions for leakage circuit breakers

Precautions for leakage circuit breakers

Installation 1. Before installation, check whether the data on the nameplate of the leakage circuit breaker is consistent with the usage requiremen ...

What is a smart circuit breaker ?

What is a smart circuit breaker ?

The intelligent circuit breaker mechanism is located on the front of the circuit breaker. The mechanism adopts a five-bar linkage free release mecha ...

What is a fully insulated inflatable cabinet?

What is a fully insulated inflatable cabinet?

The fully insulated is to seal the 10KV primary charged high-voltage components such as busbars, circuit breakers, isolating switches, transformers, e ...

The working principle of AC contactor

The working principle of AC contactor

The working principle of the AC contactor is to use the electromagnetic force and the spring force to cooperate to realize the connection and breaki ...

Introduction to Molded Case Circuit Breakers

Introduction to Molded Case Circuit Breakers

Molded case circuit breakers are also called device circuit breakers. All parts are sealed in a plastic case. The auxiliary contacts, undervoltage rel ...

Precautions for using GCK low-voltage withdrawable switchgear

Precautions for using GCK low-voltage withdrawable switchgear

GCK low voltage withdrawable switchgear is widely used in power plants, substations, factories and mining enterprises and power distribution centers P ...

Introduction to Time Relay

Introduction to Time Relay

The timing relay can work between -40℃+55℃, and can work for up to 150 hours ...

Insulation accident of low voltage circuit breaker

Insulation accident of low voltage circuit breaker

Low-voltage circuit breaker insulation accidents can be divided into internal insulation accidents and external insulation accidents. The harm cause ...

Why does the low-voltage circuit breaker fail to operate

Why does the low-voltage circuit breaker fail to operate

The operation failure of the low-voltage circuit breaker is manifested by dragging or misoperation of the circuit breaker. Because the most basic an ...

Introduction of low voltage circuit breaker

Introduction of low voltage circuit breaker

Low-voltage circuit breakers are also called automatic air switches or automatic air circuit breakers, or circuit breakers for short. It is an electri ...

Meet you at the 127th Canton Fair 2020

Meet you at the 127th Canton Fair 2020

We sincerely invite you to visit our online booth and watch our live show of 127th Canton Fair Online. Live show: 10:00-22:00 GMT+8 from 15th to 24th ...

A Letter To Customers

A Letter To Customers

A letter to our customers: At the beginning of the Chinese New Year Spring Festival, China was shrouded in sudden new coronavirus. This epidemic viru ...

Happy Chinese New Year

Happy Chinese New Year

Dear Sir/Madam, Thank you for giving our company support in this year. The Chinese traditional Spring Festival is coming, We will have a vacation fr ...

Happy holidays!

Happy holidays!

Dear Sir/Madam, The holiday season is a wonderful time for us to remember the friends and customers who help our business and make our jobs a pleasur ...

Current Monitoring Relay Supplier

Current Monitoring Relay Supplier

Flexible adjustment by potentiometer, choice of 6 ranges: AC0.05-0.5A; AC0.1-1A; AC0.2-2A; AC0.5-5A; AC0.8-8A; AC1.6-16A. Possible to use for current ...

Circuit Breakers Supplier

Circuit Breakers Supplier

Founded in 1987, Changan Group Co.,Ltd  is a power supplier and exporter of industrial electrical equipment. passed ISO9001 / ISO14001 / OHSAS18001 in ...

Latching Relay Supplier

Latching Relay Supplier

Controlled by buttons for light switching from more places, are a practical replace-ment for three-way switches and cress-bar switches. ...

Changeover Switch Manufacturer

Changeover Switch Manufacturer

Passed ISO9001 / ISO14001 / OHSAS18001 inspection. It is a national high-tech enterprise, a top 500 private enterprise in China, a top 500 Chinese mac ...