1A Relays | McMaster-Carr

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49 Products

About Timer Relays

Attach these relays to a flat surface using the mounting hole. They have no moving parts, so compared to mechanical switches, they require less maintenance, last longer, and are quieter.

Switches with a potentiometer (variable switch) allow you to adjust the delay within the range.

For technical drawings and 3-D models, click on a part number.

			Timing Range
Number of Terminals	Input Voltage	Control Current, mA	No. of	Overall	Switching Current @ Voltage	Ht.	Wd.	Dp.	Features		Each
Delayed Start (Delay-on-Make)
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO
2	12V AC, 12V DC	21	1	0.05 sec.-1 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	000000
2	12V AC, 12V DC	21	1	0.25 sec.-5 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	12V AC, 12V DC	21	1	0.5 sec.-10 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	12V AC, 12V DC	21	1	3 sec.-60 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	12V AC, 12V DC	21	1	15 sec.-300 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	12V AC, 12V DC	21	1	30 sec.-10 min.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	24V AC, 24V DC	10	1	0.05 sec.-1 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	24V AC, 24V DC	10	1	0.25 sec.-5 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	24V AC, 24V DC	10	1	0.5 sec.-10 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	24V AC, 24V DC	10	1	3 sec.-60 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	24V AC, 24V DC	10	1	15 sec.-300 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	24V AC, 24V DC	10	1	30 sec.-10 min.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	000000000	00000
2	120V AC, 120V DC	4	1	0.05 sec.-1 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	00000000	00000
2	120V AC, 120V DC	4	1	0.25 sec.-5 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	00000000	00000
2	120V AC, 120V DC	4	1	0.5 sec.-10 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	00000000	00000
2	120V AC, 120V DC	4	1	3 sec.-60 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	00000000	00000
2	120V AC, 120V DC	4	1	15 sec.-300 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	00000000	00000
2	120V AC, 120V DC	4	1	30 sec.-10 min.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	00000000	00000
2	24-240V AC/24-240V DC	10	1	1 sec.-1,023 sec.	1 A @ 120 V AC	2"	2"	0.89"	Potentiometer	00000000	000000
Delayed Switch-Off (Delay-on-Break)
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO
5	120V AC	36	1	0.05 sec.-1 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	0000000	00000
5	120V AC	36	1	0.25 sec.-5 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	0000000	00000
5	120V AC	36	1	0.5 sec.-10 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	0000000	00000
5	120V AC	36	1	3 sec.-60 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	0000000	00000
5	120V AC	36	1	15 sec.-300 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	0000000	00000
5	120V AC	36	1	30 sec.-10 min.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	0000000	00000
7	12V DC	217	1	0.25 sec.-5 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
7	12V DC	217	1	0.5 sec.-10 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
7	12V DC	217	1	3 sec.-60 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
Interval
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO
5	120V AC	25	1	0.05 sec.-1 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
5	120V AC	25	1	0.25 sec.-5 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
5	120V AC	25	1	0.5 sec.-10 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
5	120V AC	25	1	3 sec.-60 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
5	120V AC	25	1	15 sec.-300 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
5	120V AC	25	1	30 sec.-10 min.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
Repeat Cycle
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO
7	120V AC	36	1	0.05 sec.-1 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
7	120V AC	36	1	0.25 sec.-5 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
7	120V AC	36	1	0.5 sec.-10 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
7	120V AC	36	1	3 sec.-60 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
7	120V AC	36	1	15 sec.-300 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
7	120V AC	36	1	30 sec.-10 min.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
Switch-On (Single-Shot)
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO
5	120V AC	36	1	0.05 sec.-1 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	00000000	00000
5	120V AC	36	1	0.25 sec.-5 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	00000000	00000
5	120V AC	36	1	0.5 sec.-10 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	00000000	00000
5	120V AC	36	1	3 sec.-60 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	00000000	00000
5	120V AC	36	1	15 sec.-300 sec.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	00000000	00000
5	120V AC	36	1	30 sec.-10 min.	1 A @ 120 V AC	2"	2"	0.88"	Potentiometer	00000000	00000
7	12V DC	217	1	0.25 sec.-5 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
7	12V DC	217	1	0.5 sec.-10 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000
7	12V DC	217	1	3 sec.-60 sec.	1 A @ 120 V AC	2"	2"	0.88"	__	00000000	00000

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About Timer Relays

Solid State Surface-Mount Timer Relays