What is a Changeover Relay Switch?
3 November 2017 | AdrianR
This post highlights the Changeover switch relays covered in the range of auto electrical products at Arc Components Limited. The relays supplied in-store are configured to DIN 72552 terminal standardisation. Examples can be found in the "Switch Relay" section.
What is a Changeover relay?
Many configurations of a changeover relay are used for automotive electrical circuit switching, each allowing a variation on the switch operation; versions include Normally Closed (NC or active circuit), latching and coil suppression. One of these, the latching relay, allows a mechanical (or in some cases an electronic) function that retains the switched position even when power to the coil is cut; helpful in conserving power, the line switch is reactivated (usually with a momentary push switch) only when the coil is energised again. Typical builds are:
Relay Coil - Positive and Negative Coil Energising by DIN 72552 Definition.
Relay Contacts - Line Feed or Switching by DIN 72552 Definition.
Examples of Changeover Relays:
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