Momentary Relays | McMaster-Carr

	Input Voltage Input Voltage

	Switching Current Switching Current

	Switching Voltage Switching Voltage

	Number of Circuits Controlled Number of Circuits Controlled

	Industry Designation Industry Designation

	Number of Terminals Number of Terminals

	Mounting Location Mounting Location

Printed
Circuit Board

	Relay Type Relay Type


Standard	Signal

	Electrical Phase Electrical Phase

	Switch Starting Position Switch Starting Position

1 Off (Normally Open)

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

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

	Power Power

1/3 hp @ 115 V AC

3/4 hp @ 115 V AC

1 hp @ 115 V AC

1 1/2 hp @ 115 V AC

2 hp @ 115 V AC

3 hp @ 115 V AC

5 hp @ 115 V AC

7 1/2 hp @ 115 V AC

1/6 hp @ 120 V AC

1/4 hp @ 120 V AC

1/3 hp @ 120 V AC

1/2 hp @ 120 V AC

3/4 hp @ 120 V AC

1 hp @ 120 V AC

1 1/2 hp @ 120 V AC

2 hp @ 120 V AC

3 hp @ 120 V AC

1 hp @ 230 V AC

2 hp @ 230 V AC

3 hp @ 230 V AC

5 hp @ 230 V AC

7 1/2 hp @ 230 V AC

10 hp @ 230 V AC

15 hp @ 230 V AC

20 hp @ 230 V AC

30 hp @ 230 V AC

1/3 hp @ 240 V AC

1/2 hp @ 240 V AC

1 1/2 hp @ 240 V AC

2 hp @ 240 V AC

3 hp @ 240 V AC

5 hp @ 240 V AC

7 1/2 hp @ 240 V AC

10 hp @ 240 V AC

15 hp @ 240 V AC

2 hp @ 277 V AC

3 hp @ 277 V AC

5 hp @ 460 V AC

10 hp @ 460 V AC

15 hp @ 460 V AC

20 hp @ 460 V AC

30 hp @ 460 V AC

40 hp @ 460 V AC

50 hp @ 460 V AC

5 hp @ 480 V AC

7 1/2 hp @ 480 V AC

10 hp @ 480 V AC

15 hp @ 480 V AC

20 hp @ 480 V AC

30 hp @ 480 V AC

5 hp @ 575 V AC

10 hp @ 575 V AC

15 hp @ 575 V AC

20 hp @ 575 V AC

30 hp @ 575 V AC

40 hp @ 575 V AC

50 hp @ 575 V AC

5 hp @ 600 V AC

7 1/2 hp @ 600 V AC

10 hp @ 600 V AC

15 hp @ 600 V AC

20 hp @ 600 V AC

30 hp @ 600 V AC

40 hp @ 600 V AC

	Width Width

	Depth Depth

	Wire Connection Type Wire Connection Type

Screw Terminals

Quick-Disconnect Terminals

Screw-Clamp Terminals

Solder Pin Terminals

Spring-Clamp Terminals

	Application Application

	Socket Connection Type Socket Connection Type


Quick- Disconnect Terminals	Circular Pin Terminals

	Specifications Met Specifications Met

	Height Height

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

DFARS Specialty Metals
COTS-Exempt

	Mechanical Life Cycles Mechanical Life Cycles

	Load Type Load Type

	Number of Mounting Holes Number of Mounting Holes

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475 Products

About Relays

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Low-Current Relays

Flange-Mount Spade-Terminal Relays

Flange-Mount Spade-Terminal Relays

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

Compact Spade-Terminal Relays

Compact Spade-Terminal Relays

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

Spade-Terminal Relays

Spade-Terminal Relays

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

Thin Spade-Terminal Relays

Thin Spade-Terminal Relays

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

Long-Life Spade-Terminal Relays

Long-Life Spade-Terminal Relays

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

Thin Long-Life Spade-Terminal Relays

Thin Long-Life Spade-Terminal Relays

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

Washdown Relays

Washdown Relays

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

Premium Circular-Pin Relays

Premium Circular-Pin Relays

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

Circular-Pin Relays

Circular-Pin Relays

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

Long-Life Circular-Pin Relays

Long-Life Circular-Pin Relays

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

Hazardous Location Circular-Pin 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.

PC-Board Pin Relays

PC-Board Pin Relays

Solder these relays to a printed circuit board.

Machine-Guard Safety Screw Terminal 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.

Screw Terminal Relays

Screw Terminal Relays

Use the screw terminals to hardwire these relays.

Medium-Current Relays

Medium-Current Relays

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.

Enclosed Medium-Current Relays

Enclosed Medium-Current Relays

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

DIN-Rail Mount Long-Life Medium-Current Relays

DIN-Rail Mount Long-Life Medium-Current Relays

Mount these relays directly to DIN rail.

Hybrid Long-Life Medium-Current Relays

Hybrid Long-Life Medium-Current Relays

These relays combine solid state and mechanical operation to provide long service life without the need for a heat sink.

Long-Life Medium-Current Relays

Long-Life Medium-Current Relays

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

High-Current Relays

High-Current Relays

High-Current Relays

Use these relays with large motors and lighting systems.

DIN-Rail Mount Long-Life High-Current Relays

DIN-Rail Mount Long-Life High-Current Relays

With no moving parts, these solid state relays have an extended service life. Mount them directly to DIN rail.

Infrequent-Cycle High-Current Relays

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.

DIN-Rail Mount Infrequent-Cycle High-Current Relays

DIN-Rail Mount Infrequent-Cycle High-Current Relays

Mount these relays directly to DIN rail.

High-Current Vehicle Relays

High-Current Vehicle Relays

High-Current Vehicle Relays

Suitable for DC-powered equipment such as forklifts, floor scrubbers, and trucks.

Water-Resistant High-Current Vehicle Relays

Water-Resistant High-Current Vehicle Relays

Signal Relays

Signal Relays

Use these relays with circuits that control electric signals for PLCs and microprocessors.

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.

Ultra-Thin Signal Relays

Maximize space inside your control cabinet—these relays are extra narrow.

Ultra-Thin Signal Relays with Socket

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

Air-Actuated Relays

Air-Actuated Relays

Also known as an air-to-electric switch, this relay converts an air signal to an electric signal.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)