SPDT Relays | McMaster-Carr

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	Input Voltage Input Voltage

	Switching Voltage Switching Voltage

	Relay Type Relay Type


Standard	Signal

Timer

	Industry Designation Industry Designation	Show

SPDT

	Industry Designation Industry Designation	Hide

	Number of Terminals Number of Terminals

	Mounting Location Mounting Location

Printed
Circuit Board

Panel

	Switching Current Switching Current

	Number of Circuits Controlled Number of Circuits Controlled

	Switch Starting Position Switch Starting Position

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

	Socket Connection Type Socket Connection Type


Quick- Disconnect Terminals	Circular Pin Terminals

	Operation Type Operation Type

Mechanical

Solid State

	Application Application

Power

Signal

	Wire Connection Type Wire Connection Type

Screw Terminals

Quick-Disconnect Terminals

Stud Terminals

Solder Pin Terminals

Wire Leads

	Switch Action Switch Action

Springs Back (Momentary)

	Width Width

	Height Height

	Control Current Control Current

	Specifications Met Specifications Met

CSA

CE Marked

	Mechanical Life Cycles Mechanical Life Cycles

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

DFARS Specialty Metals
COTS-Exempt

	Timer Relay Function Timer Relay Function

Asymmetrical Repeat Cycle

Delayed Start (Delay-on-
Make)

Delayed Switch-Off (Delay-on-
Break)

Delayed Switch-On with
Delayed Switch-Off

Interval

Repeat Cycle

Switch-On (Single-Shot)

Switch-On Asymmetrical
Repeat Cycle

	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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160 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.

Premium Circular-Pin Relays

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

PC-Board Pin Relays

Solder these relays to a printed circuit board.

Washdown Relays

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

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-Starting-Current Vehicle Relays

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

Weatherproof High-Starting-Current Vehicle Relays

The extended housing covers and protects terminals.

Water-Resistant High-Current Vehicle Relays

High-Current Vehicle Relays

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

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.

Air-Actuated Relays

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

Timer Relays

DIN-Rail Mount Multifunction Timer Relays

Control multiple timing functions from your electrical cabinet—these timer relays mount to 35 mm DIN rail (also known as DIN 3 rail), which is the most commonly used size.