Relays are switches that open and close circuits electronically. There are many different types, including time delay relays and solid state relays. Relay accessories support, maintain, customize, enhance the performance of, or replace the parts of relays. Accessories include heat sinks, relay mounting adaptors and kits, ground fault sensors, relay covers, overload relay lugs and more. Items vary by amps, volts, coil volts, compatibilities and more.