17A Relays | McMaster-Carr

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	Input Voltage Input Voltage

	Electrical Phase Electrical Phase

Single

Three

	Switching Current Switching Current	Show

17A

	Switching Current Switching Current	Hide

	Mounting Location Mounting Location

DIN Rail

Surface

	Number of Circuits Controlled Number of Circuits Controlled

	Power Power

	Auxiliary Contact Switch Starting Position Auxiliary Contact Switch Starting Position

1 Off (Normally Open)

1 On (Normally Closed)

	Load Type Load Type

Full

Resistive

	Industry Designation Industry Designation

3PST-NO

4PST-NO

	Wire Connection Type Wire Connection Type

	Screw Terminals

	Switching Voltage Switching Voltage

600V AC

	Specifications Met Specifications Met

UL Listed

C-UL Listed

	Number of Terminals Number of Terminals

	Depth Depth

3.2"

3.9"

	Width Width

1 4/5"

	Operation Type Operation Type

Mechanical

	Switch Action Switch Action

Springs Back (Momentary)

	Switch Starting Position Switch Starting Position

3 Off (Normally Open)

4 Off (Normally Open)

	Height Height

3.2"

	Relay Type Relay Type

	Standard

	Application Application

Power

	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)

22 Products

About Relays

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)
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	000000
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	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	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	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)
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	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	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	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	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	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	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 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

Front-Mount Auxiliary Contact for Relays Rated 9-32 Full-Load Amps—1 Off (Normally Open) and 1 On (Normally Closed)	00000000	Each	000000
Side-Mount Auxiliary Contact for Relays Rated 9-32 Full-Load Amps—1 Off (Normally Open) and 1 On (Normally Closed)	00000000	Each	00000

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