BCH Electric Limited

What is a contactor? A  contactor  is an electrically regulated switch used for switching an electrical power circuit. A circuit generally controls it with a much low power level than the switched circuit, such as a 24-voltage coil electromagnet controlling a 230-voltage motor switch. Unlike relays, contactors are directly connected to high-current load electrical devices. Devices exchanging more than 15 amperes or circuits rated more than a few kilowatts are called contactors. Apart from that optional auxiliary low current contacts, contactors are almost solely fitted with normally open (“form A”) contacts. They are designed with features to control and subdue the arc made when interrupting heavy motor currents. Components of Contactors:- The  contacts  are the current-moving part of the contactor. This contains power contacts, auxiliary contacts, and contact springs.  The  electromagnet  (or “ coil ”) delivers the driving force...

  A  contactor  is a device for creating and breaking an electrical power circuit. For example, we normally use a contactor for turning on & off an electrical motor. Unlike  relays , contactor are prepared with qualities to control and suppress the arc made when interrupting heavy motor currents.  Contactors come in many states with various capacities and characteristics. Unlike a  circuit breaker , a contactor is not planned to interrupt a short circuit current. The contactor is mainly used in higher current carrying capacity applications, while the relays are used for lower current applications. Read more