Relays

This section covers the two main types of relays: mechanical and solid-state. See the child pages for more information.

Child Pages

Mechanical Relays

Relays are electronic components which can switch a load on and off from an isolated control signal. There are traditional mechanical relays and more modern solid-state relays. This page covers terminology, parameters, contact arrangements, inductive kickback, flyback diodes, latching, common relay packages, supplier links and more.

Mechanical Relays

Relays are electronic components which can switch a load on and off from an isolated control signal. There are traditional mechanical relays and more modern solid-state relays. This page covers terminology, parameters, contact arrangements, inductive kickback, flyback diodes, latching, common relay packages, supplier links and more.

Solid State Relays (SSRs)

Solid-state relays (SRRs) are relays that use don't have any moving mechanical parts involved in the switching. They use semi-conductor devices (normally MOSFETs) to perform the switching instead.

Solid State Relays (SSRs)

Solid-state relays (SRRs) are relays that use don't have any moving mechanical parts involved in the switching. They use semi-conductor devices (normally MOSFETs) to perform the switching instead.