Power Relays | McMaster-Carr

With no moving parts, these solid-state relays are fast switching and require less maintenance, last longer, and are quieter than mechanical switches.

Screw Terminal Relays

Use the screw terminals to hardwire these relays.

Spade-Terminal Relays

Using a low-current signal, these relays are often used to control small motors and heaters.

Compact Spade-Terminal Relays

Fit these relays where standard spade-terminal relays are too big.

DIN-Rail Mount Touch-Safe Screw Terminal Relays

Quickly and safely mount these relays on 35 mm DIN rail (also known as DIN 3). IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits.

DIN-Rail Mount Solid State Relays

Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter. They mount on 35 mm DIN rail (also known as DIN 3) for fast installation.

Circular-Pin Relays

The circular pin terminals plug into relay sockets for easy installation.

Infrequent-Cycle Relays

For use with equipment that cycles on and off, these relays meet UL 508 for air conditioning and heating. Also known as definite-purpose contactors.

Washdown Enclosed Relays

A NEMA 4X enclosure protects these relays from washdowns, dirt, and corrosion.

Enclosed Relays

An enclosure covers the terminals on these relays to help prevent damage from dust or accidental bumps.

Water-Resistant Stud-Terminal Relays

Sealed to keep out water, these relays are often used for DC-powered equipment such as forklifts, floor scrubbers, and trucks.

High-Current Lighting Relays

Switch lighting systems on and off—these relays can handle the high switching current on large overhead light systems.

Machine-Guard Relays

The interlocked opposing contacts won't close at the same time, so these relays are suitable for safety applications such as machine guarding.

Timer Relays

Turn machinery, such as paint and conveyor lines, on and off after a set period of time.

Solid State Versa-Mount Multifunction Timer Relays

Install these relays in a panel cutout or plug them into a relay socket. Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, are quieter, and switch faster.

Solid State Versa-Mount Timer Relays

Mount these timer relays in a panel cutout or plug them into a relay socket for quick installation. Capable of fast switching, they are solid state and have no moving parts, so they require less maintenance, last longer, and are quieter than mechanical relays.

Solid State Surface-Mount Timer Relays

Attach these relays to a flat surface using the mounting hole. They have no moving parts, so compared to mechanical switches, they require less maintenance, last longer, and are quieter.

Solid State DIN-Rail Mount
Multifunction Timer Relays

For fast installation, mount these relays directly to 35 mm DIN rail (also known as DIN 3 rail). With no moving parts, these solid state relays last longer and require less maintenance, are quieter, and switch faster than mechanical relays.

Multifunction Timer Relays

Get a variety of timing functions in a single relay.

Relays

Open-Style Screw Terminal Relays

Solid State Screw Terminal Relays

Screw Terminal Relays

Spade-Terminal Relays

Compact Spade-Terminal Relays

DIN-Rail Mount Touch-Safe Screw Terminal Relays

DIN-Rail Mount Solid State Relays

Circular-Pin Relays

Infrequent-Cycle Relays

Washdown Enclosed Relays

Enclosed Relays

Water-Resistant Stud-Terminal Relays

High-Current Lighting Relays

Machine-Guard Relays

Timer Relays

Timer Relays

Solid State Versa-Mount Multifunction Timer Relays

Solid State Versa-Mount Timer Relays

Solid State Surface-Mount Timer Relays

Solid State DIN-Rail MountMultifunction Timer Relays

Multifunction Timer Relays

Solid State DIN-Rail Mount
Multifunction Timer Relays