120V AC Relays | McMaster-Carr

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297 Products

Relays

Compact Spade-Terminal Relays

Smaller than standard spade-terminal relays in height and depth, these relays save space inside your control cabinet.

Thin Spade-Terminal Relays

Thinner than other spade-terminal relays, these fit in tight spaces.

Flange-Mount Spade-Terminal Relays

Mount relays to a flat surface using the slot on the flange.

Spade-Terminal Relays

Attach quick-disconnect terminals or plug relays into relay sockets.

Circular-Pin Relays

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

Premium Circular-Pin Relays

Built to handle tough, repetitive-use applications, these are more durable than standard relays.

Hazardous Location Circular-Pin Relays

These sealed relays meet UL Class I, Division 2, Groups A, B, C, and D for use in hazardous locations.

Screw Terminal Relays

Use the screw terminals to hardwire these relays.

Machine-Guard Safety Screw Terminal Relays

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

Washdown Relays

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

Enclosed Medium-Current Relays

The built-in enclosure protects contacts from dust and dirt.

Medium-Current 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.

High-Current Relays

Use these relays with large motors and lighting systems.

DIN-Rail Mount Infrequent-Cycle High-Current Relays

Mount these relays directly to DIN rail.

Infrequent-Cycle High-Current 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.

Latching Relays

Sequenced Latching Relays

These relays switch through a series of different circuit configurations every time they receive an input voltage. Also known as step relays.

Latching Relays

A single, momentary input voltage switches these relays and locks them in position, so they don't require a constant input voltage to stay on or off.

Alternating Relays

Split run time between two devices—this relay will automatically alternate between them.

Thin Signal Relays with PLC Protection and Socket

Prevent voltage spikes from damaging your programmable logic controller or other sensitive control device. Thinner than other signal relays, these fit in tight spaces.

Timer Relays

Socket-Mount Multifunction Timer Relays

Plug these multifunction timer relays into relay sockets for fast installation and replacement.

Socket-Mount Timer Relays

Plug these timer relays into relay sockets for fast installation and replacement.

Wide-Range Socket-Mount Timer Relays

Postpone starts longer and set wider intervals than with most timer relays.

Long-Life Surface-Mount Timer Relays

With no moving parts, these solid state relays have an extended service life.

Surface-Mount Timer Relays

Use the mounting hole to attach these relays to a flat surface.

Medium-Current Timer Relays

Also known as power relays, these relays are rated for 1 horsepower or 30 amps and are suitable for compressors, blowers, and heaters.

Switches

Two-Hand Safety Switches

It takes two hands to activate these switches, minimizing the risk of accidental equipment start up.

Motor Starters

Provide on/off control for a motor and protect it from overloads. These starters shut the motor off if current exceeds the full-load current rating.

Low-Profile Motor Starters

With a shallower depth than most other starters, these fit in narrow spaces.

Enclosed Motor Starters

The NEMA 4X rated enclosure protects these starters from corrosion and washdowns.

Compact Enclosed Motor Starters

Sized to fit in tight spaces, these starters have a shorter height and narrower depth than most other starters.

Reversing Motor Starters

Use these starters with motors that run forward and backward, such as motors for conveyor belts.

Enclosed Reversing Motor Starters

Rated NEMA 4X, these enclosed starters are protected from corrosion and washdowns.

Current Relays

Prevent AC current overload in equipment such as motors and heaters.

Relays for Float Switches

Install one of these relays to actuate equipment that has a higher current rating than your switch.