A relay is an electrically operated switch. Many relays use an electromagnet to operate a switching mechanism, but other operating principles are also used. Relays find applications where it is necessary to control a circuit by a low-power signal, or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits, repeating the signal coming in from one circuit and re-transmitting it to another. Relays found extensive use in telephone exchanges and early computers to perform logical operations. A type of relay that can handle the high power required to directly drive an electric motor is called a contactor. Solid-state relays control power circuits with no moving parts, instead using a semiconductor device to perform switching. Relays with calibrated operating characteristics and sometimes multiple operating coils are used to protect electrical circuits from overload or faults; in modern electric power systems these functions are performed by digital instruments still called "protection relays".

General-Purpose Relay

General-Purpose RelayGeneral-Purpose Relay

Power Relay

Power RelayPower Relay

Timer Relay

Timer RelayTimer Relay

PCB Relay

PCB RelayPCB Relay

Solid State Relay

Solid State RelaySolid State Relay

Relay Socket

Relay SocketRelay Socket

Floatless Relay

Floatless RelayFloatless Relay

Phase Reversal Relay

Phase Reversal RelayPhase Reversal Relay


Disclaimer: The appearance of the products listed on this website, color, parameters are for reference only, issued a kind of LANGIR Electric Company shall prevail.
LANGIR Electric Company reserves the right to modify or cancel the relevant parameters of this website does not advance notice. If in doubt, please contact customer service hotline.