HVAC Relay Controls | McMaster-Carr

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152 Products

Infrequent-Cycle Relays

1 Circuit

2 Circuits

3 Circuits

4 Circuits

For use with equipment that cycles on and off, these relays meet UL 508 for air conditioning and heating. Connections are accessible from the front, so you can mount relays side-by-side. Also known as definite-purpose contactors.

Enclosures (sold separately) are NEMA 1 rated to protect contacts from corrosion.

Also Available: Auxiliary contacts for 3.8"-7.2" Ht. relays. They allow you to add a signaling device or control another relay. Please select 6564K99, then select the McMaster-Carr part number of your relay and whether you want to switch one circuit on (1 Normally Open) or off (1 Normally Closed).

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

			Switching Current @ 600V AC		hp @ Switching Voltage
Number of Terminals	Input Voltage	Control Power	Full Load	Resistive Load	Single Phase	Three Phase	Ht.	Wd.	Dp.	Quick-Disconnect Tab Wd.		Each
1 Circuit Controlled with 1 Off (Normally Open)—SPST-NO
With Quick-Disconnect and Screw Terminals
2	24V AC	6VA	25A	30A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	000000
2	24V AC	6VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
2	24V AC	6VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	000000
2	120V AC	6VA	25A	30A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
2	120V AC	6VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
2	120V AC	6VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	000000
2	208V AC, 240V AC	6VA	25A	30A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
2	208V AC, 240V AC	6VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
2	208V AC, 240V AC	6VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	000000
2 Circuits Controlled with 2 Off (Normally Open)—DPST-NO
With Quick-Disconnect and Screw Terminals
4	24V AC	6.5VA	20A	30A	1 1/2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
4	24V AC	6.5VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
4	24V AC	6.5VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
4	24V AC	6.5VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	000000
4	24V AC	7VA	15A	20A	3/4 hp @ 115 V AC 2 hp @ 230 V AC	3 hp @ 230 V AC 5 hp @ 460 V AC 5 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	00000
4	24V AC	10VA	50A	65A	3 hp @ 115 V AC 10 hp @ 230 V AC	15 hp @ 230 V AC 30 hp @ 460 V AC 30 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
4	24V AC	19VA	90A	120A	7 1/2 hp @ 115 V AC 20 hp @ 230 V AC	30 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	5"	3.7"	4.4"	0.25"	00000000	000000
4	24V AC	50.4VA	60A	75A	5 hp @ 115 V AC 10 hp @ 230 V AC	20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
4	24V AC	50.4VA	75A	90A	5 hp @ 115 V AC 15 hp @ 230 V AC	20 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
4	120V AC	6.5VA	20A	30A	1 1/2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
4	120V AC	6.5VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
4	120V AC	6.5VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
4	120V AC	6.5VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	000000
4	120V AC	7VA	15A	20A	3/4 hp @ 115 V AC 2 hp @ 230 V AC	3 hp @ 230 V AC 5 hp @ 460 V AC 5 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	00000
4	120V AC	10VA	50A	65A	3 hp @ 115 V AC 10 hp @ 230 V AC	15 hp @ 230 V AC 30 hp @ 460 V AC 30 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
4	120V AC	19VA	90A	120A	7 1/2 hp @ 115 V AC 20 hp @ 230 V AC	30 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	5"	3.7"	4.4"	0.25"	00000000	000000
4	120V AC	50.4VA	60A	75A	5 hp @ 115 V AC 10 hp @ 230 V AC	20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
4	120V AC	50.4VA	75A	90A	5 hp @ 115 V AC 15 hp @ 230 V AC	20 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
4	24V DC	3.1W	15A	20A	3/4 hp @ 115 V AC 2 hp @ 230 V AC	3 hp @ 230 V AC 5 hp @ 460 V AC 5 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
4	24V DC	3.1W	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.8"	2.4"	3.4"	0.25"	00000000	000000
4	24V DC	3.1W	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	__	3.8"	2.4"	3.4"	0.25"	00000000	000000
4	24V DC	3.1W	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	__	3.8"	2.4"	3.4"	0.25"	00000000	000000
4	24V DC	3.1W	50A	65A	3 hp @ 115 V AC 10 hp @ 230 V AC	15 hp @ 230 V AC 30 hp @ 460 V AC 30 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
4	24V DC	5.1W	60A	75A	5 hp @ 115 V AC 10 hp @ 230 V AC	20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
4	24V DC	5.1W	75A	90A	5 hp @ 115 V AC 15 hp @ 230 V AC	20 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
4	208V AC, 240V AC	6.5VA	20A	30A	1 1/2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
4	208V AC, 240V AC	6.5VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
4	208V AC, 240V AC	6.5VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	00000
4	208V AC, 240V AC	6.5VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	00000000	000000
4	208V AC, 240V AC	7VA	15A	20A	3/4 hp @ 115 V AC 2 hp @ 230 V AC	3 hp @ 230 V AC 5 hp @ 460 V AC 5 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	00000
4	208V AC, 240V AC	10VA	50A	65A	3 hp @ 115 V AC 10 hp @ 230 V AC	15 hp @ 230 V AC 30 hp @ 460 V AC 30 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
4	208V AC, 240V AC	19VA	90A	120A	7 1/2 hp @ 115 V AC 20 hp @ 230 V AC	30 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	5"	3.7"	4.4"	0.25"	00000000	000000
4	208V AC, 240V AC	50.4VA	60A	75A	5 hp @ 115 V AC 10 hp @ 230 V AC	20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
4	208V AC, 240V AC	50.4VA	75A	90A	5 hp @ 115 V AC 15 hp @ 230 V AC	20 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO
With Screw Terminals
6	24V AC	49.8VA	120A	140A	__	__	7.2"	4.1"	5.9"	__	00000000	00000000
6	120V AC	49.8VA	120A	140A	__	__	7.2"	4.1"	5.9"	__	00000000	00000000
6	208V AC, 240V AC	49.8VA	120A	140A	__	__	7.2"	4.1"	5.9"	__	00000000	00000000
With Quick-Disconnect and Screw Terminals
6	24V AC	7VA	15A	20A	3/4 hp @ 115 V AC 2 hp @ 230 V AC	3 hp @ 230 V AC 5 hp @ 460 V AC 5 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V AC	7VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V AC	7VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V AC	7VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V AC	10VA	50A	65A	3 hp @ 115 V AC 10 hp @ 230 V AC	15 hp @ 230 V AC 30 hp @ 460 V AC 30 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V AC	19VA	90A	120A	7 1/2 hp @ 115 V AC 20 hp @ 230 V AC	30 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	5"	3.7"	4.4"	0.25"	00000000	000000
6	24V AC	50.4VA	60A	75A	5 hp @ 115 V AC 10 hp @ 230 V AC	20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
6	24V AC	50.4VA	75A	90A	5 hp @ 115 V AC 15 hp @ 230 V AC	20 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
6	120V AC	7VA	15A	20A	3/4 hp @ 115 V AC 2 hp @ 230 V AC	3 hp @ 230 V AC 5 hp @ 460 V AC 5 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	120V AC	7VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	120V AC	7VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	120V AC	7VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	120V AC	10VA	50A	65A	3 hp @ 115 V AC 10 hp @ 230 V AC	15 hp @ 230 V AC 30 hp @ 460 V AC 30 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	120V AC	19VA	90A	120A	7 1/2 hp @ 115 V AC 20 hp @ 230 V AC	30 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	5"	3.7"	4.4"	0.25"	00000000	000000
6	120V AC	50.4VA	60A	75A	5 hp @ 115 V AC 10 hp @ 230 V AC	20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
6	120V AC	50.4VA	75A	90A	5 hp @ 115 V AC 15 hp @ 230 V AC	20 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
6	24V DC	3.1W	15A	20A	3/4 hp @ 115 V AC 2 hp @ 230 V AC	3 hp @ 230 V AC 5 hp @ 460 V AC 5 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V DC	3.1W	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V DC	3.1W	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V DC	3.1W	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V DC	3.1W	50A	65A	3 hp @ 115 V AC 10 hp @ 230 V AC	15 hp @ 230 V AC 30 hp @ 460 V AC 30 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	24V DC	5.1W	60A	75A	5 hp @ 115 V AC 10 hp @ 230 V AC	20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
6	24V DC	5.1W	75A	90A	5 hp @ 115 V AC 15 hp @ 230 V AC	20 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
6	208V AC, 240V AC	7VA	15A	20A	3/4 hp @ 115 V AC 2 hp @ 230 V AC	3 hp @ 230 V AC 5 hp @ 460 V AC 5 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	208V AC, 240V AC	7VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	208V AC, 240V AC	7VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	208V AC, 240V AC	7VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	208V AC, 240V AC	10VA	50A	65A	3 hp @ 115 V AC 10 hp @ 230 V AC	15 hp @ 230 V AC 30 hp @ 460 V AC 30 hp @ 575 V AC	3.8"	2.4"	3.4"	0.25"	00000000	000000
6	208V AC, 240V AC	19VA	90A	120A	7 1/2 hp @ 115 V AC 20 hp @ 230 V AC	30 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	5"	3.7"	4.4"	0.25"	00000000	000000
6	208V AC, 240V AC	50.4VA	60A	75A	5 hp @ 115 V AC 10 hp @ 230 V AC	20 hp @ 230 V AC 40 hp @ 460 V AC 40 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
6	208V AC, 240V AC	50.4VA	75A	90A	5 hp @ 115 V AC 15 hp @ 230 V AC	20 hp @ 230 V AC 50 hp @ 460 V AC 50 hp @ 575 V AC	3.8"	2.6"	4"	0.25"	00000000	000000
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO
With Quick-Disconnect and Screw Terminals
8	24V AC	50.4VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	24V AC	50.4VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	24V AC	50.4VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	120V AC	50.4VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	120V AC	50.4VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	120V AC	50.4VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	24V DC	5.1W	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	24V DC	5.1W	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	24V DC	5.1W	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	208V AC, 240V AC	50.4VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	7 1/2 hp @ 230 V AC 10 hp @ 460 V AC 10 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	208V AC, 240V AC	50.4VA	30A	40A	2 hp @ 115 V AC 5 hp @ 230 V AC	10 hp @ 230 V AC 15 hp @ 460 V AC 15 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000
8	208V AC, 240V AC	50.4VA	40A	50A	3 hp @ 115 V AC 7 1/2 hp @ 230 V AC	10 hp @ 230 V AC 20 hp @ 460 V AC 20 hp @ 575 V AC	3.8"	2.7"	3.4"	0.25"	00000000	000000

Enclosures for 60A 3PST-NO Relays and 4PST-NO Relays

00000000

Each

0000000

Solid State Screw Terminal Relays

2-Circuit Relay

Heat Sink

With no moving parts, these solid-state relays are fast switching and require less maintenance, last longer, and are quieter than mechanical switches.

Relays with high-starting-current protection are designed with integrated circuits that prevent damage from the large burst of electricity when a device, such as a motor or pump, turns on.

Relays with LED indicator let you quickly spot whether a relay is on or off.

Heat sinks disperse heat to increase the relay’s current rating. Mount them to 35 mm DIN rail (also known as DIN 3 rail) for fast installation. They also mount to flat surfaces. Before mounting one-circuit relays, silicone compound or a thermal pad should be placed between the heat sink and relay. Silicone compound is sold separately for heat sinks that do not include it but require it. Two-circuit relays don’t require silicone for mounting.

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

Relays
		Switching Current										Heat Sinks
Number of Terminals	Input Voltage	Without Heat Sink	With Heat Sink	Switching Voltage	Max. Switching Voltage	Ht.	Wd.	Dp.	Environmental Rating		Each		Each
2 Circuit Controlled with 2 Off (Normally Open)—DPST-NO
Relays with High-Starting-Current Protection and Covered Terminals and LED Indicator
6	4V DC, 6V DC, 12V DC, 24V DC, 30V DC	5A	50A	600V AC	660V AC	2.3"	1.8"	1.3"	IP20	0000000	0000000	0000000	0000000
6	4V DC, 6V DC, 12V DC, 24V DC, 30V DC	7.5A	75A	600V AC	660V AC	2.3"	1.8"	1.3"	IP20	0000000	000000	0000000	000000
2 Circuit Controlled with 2 Off (Normally Open)—SPST-NO
Relays with High-Starting-Current Protection and Covered Terminals and LED Indicator
8	4V DC, 6V DC, 12V DC, 24V DC, 30V DC	5A	50A	600V AC	660V AC	2.3"	1.8"	1.3"	IP20	0000000	000000	0000000	000000

Touch-Safe DIN-Rail Mount Infrequent-Cycle Relays

Operate equipment that cycles on and off from your control cabinet. Often called definite-purpose contactors, these relays meet UL 508 for use with air conditioning and heating. Mount them directly to 35 mm DIN rail (also known as DIN 3 rail) for fast installation. They have recessed terminals that prevent fingers and other objects from touching live circuits. You can wire the control circuit on either side of the relay, which helps you use less wire.

Auxiliary contacts (sold separately) allow you to add a signaling device or control another relay.

Use replacement coils to swap out a broken coil or change the input voltage of a relay. The full load current of the relay must match the full load current range of the coil.

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

10 Terminals

12 Terminals

			Switching Current @ 600V AC			hp @ Switching Voltage
Number of Terminals	Input Voltage	Control Power	Full Load	Resistive Load	Max. Switching Voltage	Single Phase	Three Phase	Ht.	Wd.	Dp.		Each
Relays
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO
10	24V AC	9VA	40A	50A	600V AC	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	1.8"	3.5"	00000000	0000000
10	24V AC	9VA	50A	55A	600V AC	3 hp @ 120 V AC 10 hp @ 240 V AC	15 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	1.8"	3.5"	00000000	000000
10	24V AC	15VA	70A	90A	600V AC	5 hp @ 120 V AC 15 hp @ 240 V AC	25 hp @ 240 V AC 50 hp @ 480 V AC 50 hp @ 600 V AC	5.8"	2.2"	4.5"	00000000	000000
10	24V AC	15VA	80A	115A	600V AC	7 1/2 hp @ 120 V AC 15 hp @ 240 V AC	30 hp @ 240 V AC 60 hp @ 480 V AC 60 hp @ 600 V AC	5.8"	2.2"	4.5"	00000000	000000
10	120V AC	9VA	40A	50A	600V AC	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	1.8"	3.5"	00000000	000000
10	120V AC	9VA	50A	55A	600V AC	3 hp @ 120 V AC 10 hp @ 240 V AC	15 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	1.8"	3.5"	00000000	000000
10	120V AC	15VA	70A	90A	600V AC	5 hp @ 120 V AC 15 hp @ 240 V AC	25 hp @ 240 V AC 50 hp @ 480 V AC 50 hp @ 600 V AC	5.8"	2.2"	4.5"	00000000	000000
10	120V AC	15VA	80A	115A	600V AC	7 1/2 hp @ 120 V AC 15 hp @ 240 V AC	30 hp @ 240 V AC 60 hp @ 480 V AC 60 hp @ 600 V AC	5.8"	2.2"	4.5"	00000000	000000
10	240V AC	9VA	40A	50A	600V AC	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	1.8"	3.5"	00000000	000000
10	240V AC	9VA	50A	55A	600V AC	3 hp @ 120 V AC 10 hp @ 240 V AC	15 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	1.8"	3.5"	00000000	000000
10	240V AC	15VA	70A	90A	600V AC	5 hp @ 120 V AC 15 hp @ 240 V AC	25 hp @ 240 V AC 50 hp @ 480 V AC 50 hp @ 600 V AC	5.8"	2.2"	4.5"	00000000	000000
10	240V AC	15VA	80A	115A	600V AC	7 1/2 hp @ 120 V AC 15 hp @ 240 V AC	30 hp @ 240 V AC 60 hp @ 480 V AC 60 hp @ 600 V AC	5.8"	2.2"	4.5"	00000000	000000
10	24V DC	5.4W	40A	50A	600V AC	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	1.8"	4.2"	0000000	000000
10	24V DC	5.4W	50A	55A	600V AC	3 hp @ 120 V AC 10 hp @ 240 V AC	15 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	1.8"	4.2"	0000000	000000
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO
12	24V AC	9VA	20A	30A	600V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	24V AC	9VA	25A	30A	600V AC	2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	24V AC	9VA	30A	32A	600V AC	2 hp @ 120 V AC 5 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	24V AC	9VA	40A	50A	600V AC	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	2.4"	3.5"	00000000	000000
12	120V AC	9VA	20A	30A	600V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	120V AC	9VA	25A	30A	600V AC	2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	120V AC	9VA	30A	32A	600V AC	2 hp @ 120 V AC 5 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	120V AC	9VA	40A	50A	600V AC	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	2.4"	3.5"	00000000	000000
12	240V AC	9VA	20A	30A	600V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	240V AC	9VA	25A	30A	600V AC	2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	240V AC	9VA	30A	32A	600V AC	2 hp @ 120 V AC 5 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	240V AC	9VA	40A	50A	600V AC	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	10 hp @ 240 V AC 30 hp @ 480 V AC 40 hp @ 600 V AC	3.5"	2.4"	3.5"	00000000	000000
12	24V DC	5.4W	20A	30A	600V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.9"	0000000	000000
Relays with 1 Off (Normally Open) Auxiliary Contact
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO
12	24V AC	9VA	20A	30A	600V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	24V AC	9VA	25A	30A	600V AC	2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	24V AC	9VA	30A	32A	600V AC	2 hp @ 120 V AC 5 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	120V AC	9VA	20A	30A	600V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	120V AC	9VA	25A	30A	600V AC	2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	120V AC	9VA	30A	32A	600V AC	2 hp @ 120 V AC 5 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	240V AC	9VA	20A	30A	600V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	240V AC	9VA	25A	30A	600V AC	2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	240V AC	9VA	30A	32A	600V AC	2 hp @ 120 V AC 5 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC	3.2"	1.8"	3.2"	00000000	00000
12	24V DC	5.4W	20A	30A	600V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.9"	0000000	000000
12	24V DC	5.4W	25A	30A	600V AC	2 hp @ 120 V AC 3 hp @ 240 V AC	5 hp @ 240 V AC 10 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.9"	0000000	000000
12	24V DC	5.4W	30A	32A	600V AC	2 hp @ 120 V AC 5 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 20 hp @ 600 V AC	3.2"	1.8"	3.9"	0000000	000000

Auxiliary Contacts

Front-Mount Auxiliary Contact

Side-Mount Auxiliary Contact

Number of Circuits Controlled	For Relay Width	Switch Starting Position	Industry Designation	Mounting Location		Each
2	1.8", 2.2", 2.4"	2 Off (Normally Open)	DPST-NO	Front	0000000	000000
2	1.8", 2.2", 2.4"	2 On (Normally Closed)	DPST-NC	Front	0000000	00000
2	1.8", 2.4"	1 Off (Normally Open) and 1 On (Normally Closed)	DPST-1NO/1NC	Front	00000000	00000
2	1.8", 2.4"	1 Off (Normally Open) and 1 On (Normally Closed)	DPST-1NO/1NC	Side	00000000	00000
4	1.8", 2.2", 2.4"	1 Off (Normally Open) and 3 On (Normally Closed)	4PST-1NO/3NC	Front	0000000	00000
4	1.8", 2.2", 2.4"	2 Off (Normally Open) and 2 On (Normally Closed)	4PST-2NO/2NC	Front	0000000	00000
4	1.8", 2.2", 2.4"	3 Off (Normally Open) and 1 On (Normally Closed)	4PST-3NO/1NC	Front	0000000	00000
4	1.8", 2.2", 2.4"	4 Off (Normally Open)	4PST-NO	Front	0000000	00000
4	1.8", 2.2", 2.4"	4 On (Normally Closed)	4PST-NC	Front	0000000	00000

Replacement Coils

For Switching Current (Load Type)	Input Voltage	Input Frequency, Hz		Each
9A-17A (Full Load)	24V AC	60	0000000	000000
9A-17A (Full Load)	120V AC	60	0000000	00000
9A-17A (Full Load)	240V AC	60	0000000	00000
22A-32A (Full Load)	24V AC	60	0000000	00000
22A-32A (Full Load)	120V AC	60	0000000	00000
22A-32A (Full Load)	240V AC	60	0000000	00000
70A-80A (Full Load)	24V AC	60	0000000	00000
70A-80A (Full Load)	120V AC	60	0000000	00000
70A-80A (Full Load)	240V AC	60	0000000	00000