4-Pin Relays | McMaster-Carr

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	Number of Terminals Number of Terminals	Show

	Number of Terminals Number of Terminals	Hide

	Input Voltage Input Voltage

	Switching Voltage Switching Voltage

	Switching Current Switching Current

	Mounting Location Mounting Location

	Number of Circuits Controlled Number of Circuits Controlled

	Industry Designation Industry Designation

	Switch Starting Position Switch Starting Position

1 Off (Normally Open)

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

1 On (Normally Closed)

2 Off (Normally Open)

3 Off (Normally Open)

	Operation Type Operation Type

Mechanical

Solid State

	Relay Type Relay Type


Standard	Signal

Timer

	Wire Connection Type Wire Connection Type

Screw Terminals

Quick-Disconnect Terminals

Stud Terminals

Screw-Clamp Terminals

	Application Application

Power

Signal

	Switch Action Switch Action

Springs Back (Momentary)

Stays Switched (Maintained)

	Specifications Met Specifications Met

CSA

CE Marked

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

DFARS Specialty Metals
COTS-Exempt

	Power Power

	Width Width

	Height Height

	Depth Depth

	Switching Current with Heat Sink Switching Current with Heat Sink

	Electrical Phase Electrical Phase

Single

Three

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

REACH Compliant

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121 Products

About 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

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

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.

Long-Life Medium-Current Relays

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

High-Starting-Current Vehicle Relays

Also known as automotive relays, these relays can handle high starting (inrush) currents.

Long-Life High-Starting-Current Vehicle Relays

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

Water-Resistant High-Current Vehicle Relays

High-Current Vehicle Relays

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

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

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.

Signal Relays

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

Long-Life DIN-Rail Mount Multifunction Timer Relays

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

Two-Hand Safety Switches

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