IEC Relays | McMaster-Carr

	Input Voltage Input Voltage

24V AC

120V AC

240V AC

24V DC

	Mounting Location Mounting Location

DIN Rail

Surface

	Switching Current Switching Current

	Number of Circuits Controlled Number of Circuits Controlled

	Electrical Phase Electrical Phase

Single

Three

	Industry Designation Industry Designation

	Power Power

	Switch Starting Position Switch Starting Position

4 Off (Normally Open)

3 Off (Normally Open)

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

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

	Auxiliary Contact Switch Starting Position Auxiliary Contact Switch Starting Position

1 Off (Normally Open)

1 On (Normally Closed)

	Number of Terminals Number of Terminals

	Depth Depth

	Height Height

2.3"

3.2"

3.5"

	Load Type Load Type

Full

Resistive

	Width Width

1.7"

1.8"

2.4"

	Specifications Met Specifications Met

C-UL Listed

UL Listed

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Mounting Hole Diameter Mounting Hole Diameter

0.16"

0.17"

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

DFARS Specialty Metals
COTS-Exempt

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

REACH Compliant

	Control Power Control Power

	Control Current Control Current

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66 Products

About Relays

3 Circuits

4 Circuits

Use these relays with large motors and lighting systems. Also known as IEC contactors, they are built to International Electrotechnical Commission (IEC) dimensional standards. All have recessed terminals to prevent contact with live connections. Mount to 35 mm DIN rail.

Auxiliary contacts allow you to add a signaling device or control another relay. Add one front-mount contact per relay or two side-mount contacts per relay.

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.	Specifications Met		Each
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO
With 1 Auxiliary Contact—1 Off (Normally Open)
10	24V AC	4VA	6A	20A	1/2 hp @ 120 V AC 1 1/2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	UL Listed C-UL Listed	000000000	000000
10	120V AC	4VA	6A	20A	1/2 hp @ 120 V AC 1 1/2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	UL Listed C-UL Listed	000000000	00000
10	240V AC	4VA	6A	20A	1/2 hp @ 120 V AC 1 1/2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	UL Listed C-UL Listed	000000000	00000
10	24V DC	3.2W	6A	20A	1/2 hp @ 120 V AC 1 1/2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	UL Listed C-UL Listed	00000000	00000
12	24V AC	6.5VA	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	24V AC	6.5VA	17A	32A	1 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"	UL Listed C-UL Listed	000000000	00000
12	24V AC	6.5VA	17A	32A	2 hp @ 120 V AC 3 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	000000
12	120V AC	6.5VA	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	120V AC	6.5VA	17A	32A	1 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"	UL Listed C-UL Listed	000000000	00000
12	120V AC	6.5VA	17A	32A	2 hp @ 120 V AC 3 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	000000
12	240V AC	6.5VA	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	240V AC	6.5VA	17A	32A	1 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"	UL Listed C-UL Listed	000000000	00000
12	240V AC	6.5VA	17A	32A	2 hp @ 120 V AC 3 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	000000
12	24V DC	5.4W	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.9"	UL Listed C-UL Listed	00000000	000000
12	24V DC	5.4W	17A	32A	1 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"	UL Listed C-UL Listed	00000000	000000
12	24V DC	5.4W	17A	32A	2 hp @ 120 V AC 3 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.9"	UL Listed C-UL Listed	00000000	000000
With 1 Auxiliary Contact—1 On (Normally Closed)
10	24V AC	4VA	6A	20A	1/2 hp @ 120 V AC 1 1/2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	UL Listed C-UL Listed	000000000	00000
10	120V AC	4VA	6A	20A	1/2 hp @ 120 V AC 1 1/2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	UL Listed C-UL Listed	000000000	00000
10	240V AC	4VA	6A	20A	1/2 hp @ 120 V AC 1 1/2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	UL Listed C-UL Listed	000000000	00000
10	24V DC	3.2W	6A	20A	1/2 hp @ 120 V AC 1 1/2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	UL Listed C-UL Listed	00000000	00000
12	24V AC	6.5VA	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	24V AC	6.5VA	17A	32A	1 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"	UL Listed C-UL Listed	000000000	00000
12	24V AC	6.5VA	17A	32A	2 hp @ 120 V AC 3 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	000000
12	120V AC	6.5VA	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	120V AC	6.5VA	17A	32A	1 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"	UL Listed C-UL Listed	000000000	00000
12	120V AC	6.5VA	17A	32A	2 hp @ 120 V AC 3 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	000000
12	240V AC	6.5VA	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	240V AC	6.5VA	17A	32A	1 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"	UL Listed C-UL Listed	000000000	00000
12	240V AC	6.5VA	17A	32A	2 hp @ 120 V AC 3 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	000000
12	24V DC	5.4W	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.9"	UL Listed C-UL Listed	00000000	000000
12	24V DC	5.4W	17A	32A	1 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"	UL Listed C-UL Listed	00000000	000000
12	24V DC	5.4W	17A	32A	2 hp @ 120 V AC 3 hp @ 240 V AC	7 1/2 hp @ 240 V AC 15 hp @ 480 V AC 15 hp @ 600 V AC	3.2"	1.8"	3.9"	UL Listed C-UL Listed	00000000	000000
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO
12	24V AC	6.5VA	9A	25A	3/4 hp @ 120 V AC 2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 7 1/2 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	24V AC	6.5VA	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	24V AC	6.5VA	17A	32A	1 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"	UL Listed C-UL Listed	000000000	00000
12	24V AC	6.5VA	22A	45A	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	3.5"	2.4"	3.5"	UL Listed C-UL Listed	000000000	000000
12	24V AC	6.5VA	32A	55A	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	15 hp @ 240 V AC 30 hp @ 480 V AC 30 hp @ 600 V AC	3.5"	2.4"	3.5"	UL Listed C-UL Listed	000000000	000000
12	120V AC	6.5VA	9A	25A	3/4 hp @ 120 V AC 2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 7 1/2 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	120V AC	6.5VA	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	120V AC	6.5VA	17A	32A	1 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"	UL Listed C-UL Listed	000000000	00000
12	120V AC	6.5VA	22A	45A	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	3.5"	2.4"	3.5"	UL Listed C-UL Listed	000000000	000000
12	120V AC	6.5VA	32A	55A	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	15 hp @ 240 V AC 30 hp @ 480 V AC 30 hp @ 600 V AC	3.5"	2.4"	3.5"	UL Listed C-UL Listed	000000000	000000
12	240V AC	6.5VA	9A	25A	3/4 hp @ 120 V AC 2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 7 1/2 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	240V AC	6.5VA	11A	28A	1 hp @ 120 V AC 2 hp @ 240 V AC	5 hp @ 240 V AC 7 1/2 hp @ 480 V AC 10 hp @ 600 V AC	3.2"	1.8"	3.2"	UL Listed C-UL Listed	000000000	00000
12	240V AC	6.5VA	17A	32A	1 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"	UL Listed C-UL Listed	000000000	00000
12	240V AC	6.5VA	22A	45A	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	3.5"	2.4"	3.5"	UL Listed C-UL Listed	000000000	000000
12	240V AC	6.5VA	32A	55A	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	15 hp @ 240 V AC 30 hp @ 480 V AC 30 hp @ 600 V AC	3.5"	2.4"	3.5"	UL Listed C-UL Listed	000000000	000000
12	24V DC	5.4W	9A	25A	3/4 hp @ 120 V AC 2 hp @ 240 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 7 1/2 hp @ 600 V AC	3.2"	1.8"	3.9"	UL Listed C-UL Listed	00000000	000000
12	24V DC	5.4W	17A	32A	1 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"	UL Listed C-UL Listed	00000000	000000
12	24V DC	5.4W	22A	45A	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	3.5"	2.4"	4.2"	UL Listed C-UL Listed	00000000	000000
12	24V DC	5.4W	32A	55A	3 hp @ 120 V AC 7 1/2 hp @ 240 V AC	15 hp @ 240 V AC 30 hp @ 480 V AC 30 hp @ 600 V AC	3.5"	2.4"	4.2"	UL Listed C-UL Listed	00000000	000000

Front-Mount Auxiliary Contact for Relays Rated 9-32 Full-Load Amps—1 Off (Normally Open) and 1 On (Normally Closed)	Each	000000
Side-Mount Auxiliary Contact for Relays Rated 9-32 Full-Load Amps—1 Off (Normally Open) and 1 On (Normally Closed)	Each	00000
Front-Mount Auxiliary Contact for Relays Rated 6 Full-Load Amps—1 Off (Normally Open) and 1 On (Normally Closed)	Each	00000

Screw Terminal Relays

Recessed screw terminals prevent accidental contact with live connections. These relays are built to International Electrotechnical Commission (IEC) dimensional standards.

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

4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO
Number of Terminals	Input Voltage	Control Current, mA	Switching Current @ 600V AC	Ht.	Wd.	Dp.	For DIN Rail Size, mm	Specifications Met		Each
10	24V AC	125	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	00000000	000000
10	120V AC	25	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	00000000	00000
10	240V AC	12.5	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	00000000	00000
10	24V DC	13	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	0000000	00000
4 Circuits Controlled with 2 Off (Normally Open) and 2 On (Normally Closed)—4PST-2NO/2NC
10	24V DC	13	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	0000000	00000
4 Circuits Controlled with 3 Off (Normally Open) and 1 On (Normally Closed)—4PST-3NO/1NC
10	24V DC	13	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	0000000	00000

Auxiliary Contacts

Number of Circuits Controlled	Switch Starting Position	Industry Designation	Mounting Location		Each
2	1 Off (Normally Open) and 1 On (Normally Closed)	DPST-1NO/1NC	Front	00000000	000000

Machine-Guard Safety Screw Terminal Relays

The interlocked opposing contacts won't close at the same time, so these relays are suitable for safety applications such as machine guarding. The screw terminals are recessed to prevent accidental contact with live connections. Relays are built to International Electrotechnical Commission (IEC) dimensional standards.

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

4 Circuits Controlled with 2 Off (Normally Open) and 2 On (Normally Closed)—4PST-2NO/2NC
Number of Terminals	Input Voltage	Control Current, mA	Switching Current @ 600V AC	Ht.	Wd.	Dp.	For DIN Rail Size, mm	Specifications Met		Each
10	24V AC	125	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	00000000	000000
10	120V AC	25	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	00000000	00000
10	240V AC	12.5	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	00000000	00000
4 Circuits Controlled with 3 Off (Normally Open) and 1 On (Normally Closed)—4PST-3NO/1NC
10	24V AC	125	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	00000000	00000
10	120V AC	25	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	00000000	00000
10	240V AC	12.5	10A	2.3"	1.7"	2.2"	35	UL Listed, C-UL Listed	00000000	00000

Auxiliary Contacts

Number of Circuits Controlled	Switch Starting Position	Industry Designation	Mounting Location		Each
2	1 Off (Normally Open) and 1 On (Normally Closed)	DPST-1NO/1NC	Front	00000000	000000

About Relays

High-Current Relays

Screw Terminal Relays

Machine-Guard Safety Screw Terminal Relays