B type RCBO
Product introductionJVL29-63 is applicable to residual operating current with rated voltage 230V/400V,frequency 50/60HZ and rated current up to 63A. It is used to perform the human electricity shock p
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The principle of self-locking of AC contactors is easy to understand at a glance!
The principle of the AC contactor is that the power is pulled in, the main contact is closed and turned on, and the motor runs. This article introduces the self-locking circuit of the AC contactor and
What is the difference between an Electronic Tripper and a Thermomagnetic Tripper
What is the difference between an Electronic Tripper and a Thermomagnetic Tripper 1. Thermal magnetic trip
What is a tripper for circuit breakers? How is the principle?
Tripper is an accessory for remotely operated tripping. When the power supply voltage is equal to any voltage between 70%-110% of the rated control power supply voltage, the circuit breaker can be reliably...
How does the leakage circuit breaker work
Leakage circuit breaker is mainly composed of zero sequence current transformer, electronic component board, leakage release and circuit breaker with overload and short-circuit protection. The leakage
Precautions for the use of solid state relays
The input pins of multiple SSRs can be connected in series or in parallel, but if each SSR must meet the high level, the zero-crossing type trigger current is greater than 5mA,
Introduction to the advantages and disadvantages of solid state relays
Solid state relays are non-contact electronic switches with isolation function, and there are no mechanical contact parts in the switch.
What are the functions of AC contactors?
AC contactor function introduction:The AC contactor is an intermediate control element, and its advantage is that it can frequently turn on and off the line, and control a large current with a small curren...
What is the difference between a contactor and a relay
Nowadays, there are many electrical accessories on the market, each of which has a certain range of use and functions, and contactors and relays are the two types that are easy to confuse. So, what is the ...
What is a isolation switch?
The main function of the general isolation switch is to disconnect small currents and change the operation mode. I don't know if you have found it or not. One of them is to disconnect the small current, wh...
What is an arc fault protective circuit breaker (AFDD)?
Electrical fire is the "first killer" that threatens people's life and property safety. According to statistics, nearly half of the fires in my country are caused by improper use of electricity. With
Structure and principle of DC isolation switch
A DC isolating switch is a device for preventing the short circuit between AC and DC of the DC isolating switch.