The buzzer is a sounding device that can convert audio signals into sound signals. It is usually powered by DC voltage. It is mainly divided into...
Residual current circuit breaker(RCCB) is a switch that can act automatically when the leakage current in the circuit exceeds a predetermined value...
Miniature circuit breaker(MCB) is a small-capacity plastic case circuit breaker with very compact structure. It is a branch of low-voltage circuit...
Both relays and contactors are electromagnetic switching devices, relays are switching devices that work in the control loop, and contactors are...
The AC contactor is an electromagnetic AC contactor with a NO main contact, three poles, and air as the arc extinguishing medium.
Anyone who has assembled an electrical control circuit or a control cabinet must be impressed by the indispensable "emergency stop" button. This...
This article briefly introduces their principles, and understands their applications in electrical The role in the electrical control loops.
Relay is an automatic control device whose output will change by leaps when the input (electricity, magnetism, sound, light, heat) reaches...
We usually encounter the concept of "safety level" in the design of electrical control circuits. So how to distinguish the safety level of...
Air circuit breaker(ACB) is a mechanical switching device which can turn on, carry and break current under normal circuit conditions, and also turn...
Moulded case circuit breaker and air circuit breaker are very common products, but many people do not understand the difference between them...
The push button switch is divided into start button (green button), stop button (red button) and compound push button switch.
The color of the push button switch actuator should meet the requirements of Electrical safety of machinery-Electrical equipment of machines...
Magnetic latching relay is a new type of relay developed in recent years. It is also an automatic switch.
A relay is an electronic control device, which has a control system and a controlled system , and is usually used in automatic control circuits.
Buzzer is a kind of voice device that converts audio model into sound signal. It is mainly used to prompt or alarm. According to different design...
There are many air circuit breakers in the distribution equipment of high-rise buildings, which are generally used as low-voltage main switch or...
Indicator Lamp or Indicator Light is a widely used in the ship, machine tools, machine equipment, switch cabinet, power distribution cabinet.
Terminal color distinguishes NO and NC contacts, terminal distinguishes NO and NC contacts, accurately measure NO and NC contacts with a multimeter.
During the use of the relay, due to various reasons, such as poor product quality, improper use, poor maintenance, etc., various failures often occur.
We encounter various push button switches almost every day, such as medical equipment, automated production lines, and communication equipment.
Emergency stop button switch is a fail-safe control switch that provides safety for the machinery and for the person using the machinery.
Circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break...
Molded case circuit breakers(MCCBs) automatically cut off current when the current exceeds the trip setting. Plastic housing refers to the housing...
What are the similarities and differences between miniature circuit breaker(MCB) and residual current circuit breaker(RCCB)?
If the use of miniature circuit breakers with substandard quality, unnecessary losses may be caused. The following are the causes and possible...
Miniature circuit breaker is a kind of complex electrical apparatus. In addition to the correct selection and adjustment...
The miniature circuit breaker is mainly used for overload and short circuit protection in the line with rated voltage of 400V and below and rated...
Thermal relay is generally composed of heating element, control contact and action system, reset mechanism, setting current device and...
Thermal relays are protective electrical appliances used for overload protection of motors or other electrical equipment and electrical circuits.