Relay Timers | McMaster-Carr

	Input Voltage Input Voltage

	Timer Relay Function Timer Relay Function

Asymmetrical Repeat Cycle

Delayed Off

Delayed Start (Delay-on-
Make)

Delayed Switch-Off (Delay-on-
Break)

Delayed Switch-On with
Delayed Switch-Off

Fixed On/Off

Interval

Manual Switch Control

Repeat Cycle

Switch-On (Single-Shot)

Switch-On Asymmetrical
Repeat Cycle

	Timing Adjustment Style Timing Adjustment Style


Knob	Screw

Joystick	Push Button

Potentiometer	DIP Switches

	Maximum Overall Timing Maximum Overall Timing

	Mounting Location Mounting Location

	Number of Terminals Number of Terminals

	Switching Voltage Switching Voltage

	Switch Starting Position Switch Starting Position

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

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

1 Off (Normally Open)

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

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

	Industry Designation Industry Designation

	Switching Current Switching Current

	Number of Circuits Controlled Number of Circuits Controlled

	Minimum Overall Timing Minimum Overall Timing

	Wire Connection Type Wire Connection Type


Screw Terminals	Quick- Disconnect Terminals

Screw-Clamp Terminals	Plug In

	Operation Type Operation Type

Mechanical

Solid State

Electrical

	Width Width

	Depth Depth

	Number of Timing Ranges Number of Timing Ranges

	Height Height

	Control Current Control Current

	Specifications Met Specifications Met

CE Marked

CSA

	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

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

REACH Compliant

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240 Products

About 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.

Dual-Channel DIN-Rail Mount
Multifunction Timer Relays

Control two steps of an electrical process from a single relay—with two fully independent channels and 30 different functions, these relays give you a wide range of possibilities.

Ultra-Thin DIN-Rail Mount Multifunction Timer Relays

Maximize space inside your control cabinet.

Long-Life DIN-Rail Mount Multifunction Timer Relays

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

Socket-Mount Multifunction Timer Relays

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

Compact Socket-Mount Multifunction Timer Relays

Smaller than standard multifunction timer relays, these relays save space in your control cabinet.

Versa-Mount Multifunction Timer Relays

Install relays in a panel cutout or plug into a relay socket.

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.

Versa-Mount Timer Relays

Install these relays in a panel cutout or plug into a relay socket.

DIN-Rail Mount Timer Relays

Mount these relays directly to DIN rail.

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.

Programmable Logic Controllers

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.

Expansion Modules for Programmable Logic Controllers

No need to program multiple PLCs—these modules expand your automated system, keeping everything conjoined and configured on one processor. Use them when you’re out of space on your DIN rail or need additional input/output functions.

Easy-Program Logic Controllers

Design and operate up to six simultaneous programs without symbols or technical language—the on-screen instructions use simple English.