Power Relays | McMaster-Carr

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278 Products

Relays

Open-Style Relays

These relays are rated for motors with 1-3 horsepower or 15-90 amps—use them with industrial automation systems, security and emergency lighting, and small motors. Also known as power relays.

Spade-Terminal Relays

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

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.

Washdown Relays

A NEMA 4X enclosure protects the relay from washdowns, dirt, and corrosion. It has wire leads to hardwire to your equipment.

Solid State Screw Terminal Relays

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.

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.

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.

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.

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.

Timer Relays

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

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.

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.

Multifunction Timer Relays

Get a variety of timing functions in a single relay.

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.

Relays

Open-Style Relays

Spade-Terminal Relays

DIN-Rail Mount Touch-Safe Screw Terminal Relays

Washdown Relays

Solid State Screw Terminal Relays

Screw Terminal Relays

Infrequent-Cycle Relays

DIN-Rail Mount Solid State Relays

Circular-Pin Relays

Machine-Guard Relays

Water-Resistant Stud-Terminal Relays

Water-Resistant Stud-Terminal Relays

Timer Relays

Timer Relays

Solid State Surface-Mount Timer Relays

Solid State DIN-Rail MountMultifunction Timer Relays

Solid State Versa-Mount Multifunction Timer Relays

Multifunction Timer Relays

Solid State Versa-Mount Timer Relays

Solid State DIN-Rail Mount
Multifunction Timer Relays