• Blackout test! What to do if the circuit breaker won't reset?

    If the circuit breaker on the panel won't reset, don't assume it has to be repaired. Most likely the circuit breaker is just doing its job and tripping to protect the circuit. The problem could be a bad connection to an outlet, appliance...

  • What is a "circuit breaker"? Its main function?

    1. Introduction to "circuit breaker" 1.1 What is a "circuit breaker" A circuit breaker is a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break ...

  • The difference between relays and contactors

    different loads 1. Contactors are used for load types that have high voltage, high current, or both. Generally speaking, it is used for equipment passing more than 15 amps or more than 3kW load. For lower quantities, normal rela...

  • Basic knowledge that relays should understand

    The definition of relay: a relay is an automatic control system component that will produce a jumping change in cardiac output when the output (electricity, magnetism, sound, light, heat) reaches a certain value. First, the p...

  • What is the function of an automotive relay?

    The function of the automotive relay is to control the magnitude and on-off of the current. The following is a detailed introduction about automotive relays: 1. Automobile relay is an automatic control device whose output will c...

  • Working principle and selection of relay

    one, The working principle and characteristics of the relay Relay is an electronic control device, it has a control system (also known as input circuit) and a controlled system (also known as output circui...

  • Types of Relays

    The types of relays include electromagnetic relays, voltage relays, time relays, pressure relays, thermal relays, overvoltage relays, static voltage relays, hot wire relays, solid state relays, and thermal reed relays. Types...

  • What aspects should be selected according to the safety relay connected to the controller?

    Safety relays are relatively common electrical appliances in industrial circuits. Many people are unaware of safety relay options. How to choose a high-quality safety relay is a problem for many people. So what should be the basis for choosing ...