What are the common faults of AC contactors ?
Reasons for Common Faults of AC Contactors and Solutions: According to the use of AC contactors in recent years, there ...
How to use multimeter to judge the quality of AC contactor ?
1. Measure the coil with the ohmic gear of the multimeter to see if the coil is short-circuited. If the short-circuited ...
What's the reason why AC contactor can't pickup, but shake ?
When the voltage of the power supply system is low, it may cause the AC contactor not to pick up but shake. The working ...
What is the reason for the noise of AC contactor ?
Reasons and treatment methods of noise produced by AC contactor in operation sometimes are as follows: 1. The first rea ...
How to choose AC contactor ?
When choosing AC contactor, the working voltage of AC contactor shall not be lower than the maximum voltage of the contr ...
What is the function of AC contactors? Why do AC contactors need to be used?
The function of AC contactor: 1. In electrotechnics, because the main circuit of AC and DC can be switched off quickly ...
How to choose the Size of Non-standard Distribution Box
1. Spacing between components should be convenient: cable connection, component operation, component maintenance and rep ...
Breaking Capacity of Moulded Case Circuit Breaker
The maximum current that a moulded case circuit breaker can disconnect at rated voltage. Also known as rated short-circu ...
Main Characteristics of Moulded Case Circuit Breaker
Rated limit short circuit breaking capacity Icu There are two kinds of breaking capacity indexes of circuit breaker: ra ...
Maintenance Method of Molded Case Circuit Breaker
The main contacts of low-voltage circuit breakers are operated manually or electrically. After the main contact is close ...
Material of distribution box
Distribution boxes are mainly made of the following materials: Cold-rolled steel sheet Distribution boxes made of this ...
Can the thermomagnetic tripper in the moulded case circuit breaker set the current ?
Generally, the current of thermomagnetic release of most domestic moulded case circuit breakers is not adjustable. Some ...
Does the plastic case circuit breaker itself have isolation function ?
Yes. Plastic housing refers to the use of plastic insulators as the shell of the device, used to isolate between conduct ...
Working Principle of Molded Case Circuit Breaker
1. Working Conditions of Molded Case Circuit Breakers (1) The upper limit of ambient air temperature is + 40 C; the low ...
What are the selection principles of circuit breakers ?
1. Firstly, the rated voltage should be selected according to the rated voltage, and the rated voltage should be the sam ...
What is the working principle of circuit breaker ?
When short circuit occurs, the high current, usually 10 to 12 times, generates the magnetic field customer service sprin ...
How to choose Circuit Breakers?
(1) The rated current of the circuit breaker is determined by the calculated current of the circuit; (About 99% of the d ...
Causes of circuit breaker tripping
There are generally three reasons for circuit breaker tripping, the first is overload, the second is short circuit, and ...
How to solve the problem that the temperature of moulded case circuit breaker rises ?
1. The problem of material purity of electric conductor or or contact itself leads to excessive working resistance and c ...
The release mode of moulded case circuit breaker should be selected according to the type of circuit breaker release
The release of moulded case circuit breaker is divided into instantaneous release and overload release. Instantaneous an ...
How to Choose the Release Mode of Molded Case Circuit Breaker
The release modes include: spring force release mode in energy storage state; driving force release mode of compressed a ...
What is Waterproof Distribution Box ?
We all know that in all the classifications of distribution boxes there is a kind of distribution boxes called waterproo ...
Advantages and Functions of Waterproof Distribution Box
1. The engineering plastic shell is made of glass fiber reinforced unsaturated polyester resin and pressed by moulds. It ...
Principle of AC Contactor
When the coil is electrified, the static iron core generates electromagnetic attraction and pulls the moving iron core t ...
