Connection of 220V AC contactor ?
The working voltage of contactor coil, 380 or 220V, and what do you do? How much current should the main contact be? For ...
What's the use of AC contactor's NO and NC ?
When the contactor coil is not powered up, the auxiliary contacts of the contactor in the natural state have no conducti ...
Why should netural line and protective line busbars be set up separately in the distribution box ?
Protecting grounding bus mainly plays a protective role. Generally, it connects with grounding wire. Protecting groundin ...
What is the minimum protection level for outdoor distribution boxes ?
Choose different levels of protection in different environments. The protection level of outdoor distribution boxes req ...
Differences between Miniature Circuit Breakers and Moulded Case Circuit Breakers
1. Moulded case circuit breaker can be connected to thicker conductors, such as more than 35 square meters. Miniature ci ...
Adjustment Method for trip of Moulded Case Circuit Breaker
The first method is to use the adjustable plastic case circuit breaker (with adjustable knobs on the cover) directly for ...
How to explore the Long Delay Parameters of Moulded Case Circuit Breaker
All protection is based on load, so, to understand the setting of overload protection value, according to the electrical ...
Difference between Electronic Moulded Case Circuit Breaker and Ordinary Moulded Case Circuit Breaker
Moulded case circuit breaker MCCB can only be classified as electromagnetic type and electronic type. Electromagnetic me ...
Main Characteristics of Molded Case Circuit Breaker
Rated limit short circuit breaking capacity Icu There are two kinds of breaking capacity indexes of circuit breaker: ra ...
What's the difference between the electronic and the electromagnetic releasers of leakage circuit breakers?
1. Different Auxiliary Power Supply Settings Electromagnetic leakage circuit breaker does not need auxiliary power supp ...
The relationship between opening distance, overrun, final pressure and release force of moulded case circuit breaker ?
The relationship between opening distance, overrun, final pressure and release force of moulded case circuit breaker? Th ...
How to solve the problem of temperature rise of plastic case circuit breaker? What is the cause to make temperature rise ?
1. The problem of material purity of electric conductor or or contact itself leads to excessive working resistance and c ...
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 ...
