24V AC Relays | McMaster-Carr

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	Input Voltage Input Voltage	Show

24V AC

	Input Voltage Input Voltage	Hide

	Switching Voltage Switching Voltage

	Mounting Location Mounting Location

Relay Socket

DIN Rail

Surface

	Relay Type Relay Type


Standard	Signal

Timer

	Industry Designation Industry Designation

	Number of Terminals Number of Terminals

	Number of Circuits Controlled Number of Circuits Controlled

	Switching Current Switching Current

	Switch Starting Position Switch Starting Position

1 Off (Normally Open)

1 Off (Normally Open) and
1 On (Normally Closed)

1 Off (Normally Open) or 1
On (Normally Closed)

2 Off (Normally Open)

2 Off (Normally Open) and
2 On (Normally Closed)

2 Off (Normally Open) or 2
On (Normally Closed)

3 Off (Normally Open)

3 Off (Normally Open) and
1 On (Normally Closed)

3 Off (Normally Open) or 3
On (Normally Closed)

4 Off (Normally Open)

4 Off (Normally Open) or 4
On (Normally Closed)

	Operation Type Operation Type

Mechanical

Solid State

	Socket Connection Type Socket Connection Type


Quick- Disconnect Terminals	Circular Pin Terminals

	Switch Action Switch Action

Springs Back (Momentary)

Stays Switched (Maintained)

	Application Application

Power

Signal

	Width Width

	Height Height

	Depth Depth

	Specifications Met Specifications Met

CSA

CE Marked

IEC 60947

	Wire Connection Type Wire Connection Type


Screw Terminals	Quick- Disconnect Terminals

	Control Current Control Current

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Mechanical Life Cycles Mechanical Life Cycles

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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234 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.

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.

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.

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.

Signal Relays

Ultra-Thin Signal Relays with Socket

Plug these relays into the included socket for fast installation; they disconnect for easy replacement.

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.

Low-Current Timer Relays

Ultra-Thin DIN-Rail Mount Multifunction Timer Relays

Maximize space inside your control cabinet.

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.

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.

Heavy Duty Motor Starters

Sealed coils protect these switches against moisture, heat, dirt, and mechanical and thermal stress.

Enclosed Heavy Duty Motor Starters

Housed in a durable steel enclosure.

Compact Programmable Logic Controllers

Smaller than other PLCs, these controllers save space in your control cabinet. They combine the functionality of a relay, timer relay, and switch in one unit, so you can program simple automation jobs.