25A Relays | McMaster-Carr

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	Input Voltage Input Voltage

	Switching Current Switching Current	Show

25A

	Switching Current Switching Current	Hide

	Switching Voltage Switching Voltage

220V AC

600V AC

24V DC

	Number of Circuits Controlled Number of Circuits Controlled

	Industry Designation Industry Designation

	Power Power

	Mounting Location Mounting Location

DIN Rail

Surface

	Switch Starting Position Switch Starting Position

1 Off (Normally Open)

2 Off (Normally Open)

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

3 Off (Normally Open)

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

4 Off (Normally Open)

	Number of Terminals Number of Terminals

	Wire Connection Type Wire Connection Type

	Screw Terminals
	Quick- Disconnect Terminals
	Screw-Clamp Terminals

	Electrical Phase Electrical Phase

Single

Three

	Operation Type Operation Type

Mechanical

Solid State

	Relay Type Relay Type

	Standard

	Width Width

	Depth Depth

	Application Application

Power

	Specifications Met Specifications Met

CSA

CE Marked

IEC

	Switch Action Switch Action

Springs Back (Momentary)

	Height Height

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

DFARS Specialty Metals
COTS-Exempt

	Mechanical Life Cycles Mechanical Life Cycles

500,000

1,000,000

20,000,000

	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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56 Products

About Relays

About Motor Switches and Starters

2 Circuits

4 Circuits

The built-in enclosure protects contacts from dust and dirt. These relays accept voltage drops up to 50% of the rated voltage without switching. Use them with industrial automation systems, security and emergency lighting, and small motors. Also known as power relays.

			Switching Current @ Voltage
Number of Terminals	Input Voltage	Control Current, mA	Off (Normally Open) Circuit Position	On (Normally Closed) Circuit Position	hp @ Switching Voltage	Ht.	Wd.	Dp.	Quick-Disconnect Tab Wd.	Specifications Met		Each
2 Circuits Controlled with 2 Off (Normally Open)—DPST-NO
With Quick-Disconnect Terminals
6	24V AC	71	25 A @ 220 V AC	__	1 1/2 hp @ 120 V AC 2 hp @ 240 V AC 2 hp @ 277 V AC	1.3"	2.7"	1.9"	0.25"	UL Recognized Component, CSA Certified, CE Marked	0000000	000000
6	120V AC	20	25 A @ 220 V AC	__	1 1/2 hp @ 120 V AC 2 hp @ 240 V AC 2 hp @ 277 V AC	1.3"	2.7"	1.9"	0.25"	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
6	240V AC	10	25 A @ 220 V AC	__	1 1/2 hp @ 120 V AC 2 hp @ 240 V AC 2 hp @ 277 V AC	1.3"	2.7"	1.9"	0.25"	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
6	12V DC	158	25 A @ 220 V AC	__	1 1/2 hp @ 120 V AC 2 hp @ 240 V AC 2 hp @ 277 V AC	1.3"	2.7"	1.9"	0.25"	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
6	24V DC	79	25 A @ 220 V AC	__	1 1/2 hp @ 120 V AC 2 hp @ 240 V AC 2 hp @ 277 V AC	1.3"	2.7"	1.9"	0.25"	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
4 Circuits Controlled with 2 Off (Normally Open) and 2 On (Normally Closed)—4PST-2NO/2NC
With Screw Terminals
10	120V AC	22	25 A @ 220 V AC/24 V DC	8 A @ 220 V AC/24 V DC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	__	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
10	24V DC	83	25 A @ 220 V AC/24 V DC	8 A @ 220 V AC/24 V DC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	__	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
4 Circuits Controlled with 3 Off (Normally Open) and 1 On (Normally Closed)—4PST-3NO/1NC
With Screw Terminals
10	120V AC	22	25 A @ 220 V AC/24 V DC	8 A @ 220 V AC/24 V DC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	__	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
10	24V DC	83	25 A @ 220 V AC/24 V DC	8 A @ 220 V AC/24 V DC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	__	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO
With Screw Terminals
10	120V AC	22	25 A @ 220 V AC/24 V DC	__	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	__	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
10	240V AC	11	25 A @ 220 V AC/24 V DC	__	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	__	UL Recognized Component, CSA Certified, CE Marked	0000000	00000
10	24V DC	83	25 A @ 220 V AC/24 V DC	__	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	__	UL Recognized Component, CSA Certified, CE Marked	0000000	00000

DIN-Rail Mount Long-Life Medium-Current Relays

Mount these relays directly to 35 mm DIN rail. They are solid state, so they have no moving parts and have an extended service life. Relays have an attached heat sink that disperses heat to provide optimal convection cooling.

2 Circuits Controlled with 2 Off (Normally Open)—DPST-NO
	Number of Terminals	Input Voltage	Switching Current @ Voltage	Ht.	Wd.	Dp.	Specifications Met		Each
With High-Starting-Current Protection
B	6	5-32V DC	25 A @ 220 V AC	4.3"	2.1"	4"	UL Listed C-UL Listed	0000000	0000000
B	6	5-32V DC	25 A @ 600 V AC	4.3"	2.1"	4"	UL Listed C-UL Listed	0000000	000000
B	6	20-275V AC/24-190V DC	25 A @ 220 V AC	4.3"	2.1"	4"	UL Listed C-UL Listed	0000000	000000
B	6	20-275V AC/24-190V DC	25 A @ 600 V AC	4.3"	2.1"	4"	UL Listed C-UL Listed	0000000	000000

High-Current 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
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	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	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	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

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

DIN-Rail Mount Infrequent-Cycle High-Current Relays

Mount these relays directly to 35 mm DIN rail. For use with equipment that cycles on and off, they meet UL 508 for air conditioning and heating. All have recessed terminals to prevent contact with live connections. Also known as definite-purpose contactors.

Auxiliary contacts allow you to add a signaling device or control another relay.

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

3 Circuits with Auxiliary Contact and 4 Circuits

			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
Relays
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO
12	24V AC	6.5VA	25A	30A	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"	UL Listed C-UL Listed UL 508	00000000	000000
12	120V AC	6.5VA	25A	30A	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"	UL Listed C-UL Listed UL 508	00000000	00000
12	230V AC	6.5VA	25A	30A	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"	UL Listed C-UL Listed UL 508	00000000	00000
Relays with 1 Off (Normally Open) Auxiliary Contact
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO
12	24V AC	6.5VA	25A	30A	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"	UL Listed C-UL Listed UL 508	00000000	00000
12	120V AC	6.5VA	25A	30A	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"	UL Listed C-UL Listed UL 508	00000000	00000
12	24V DC	5.4W	25A	30A	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"	UL Listed C-UL Listed UL 508	0000000	000000

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
2	1 Off (Normally Open) and 1 On (Normally Closed)	DPST-1NO/1NC	Side	00000000	00000

Infrequent-Cycle High-Current 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.	Specifications Met		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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	00000000	00000
2	208/240V AC	6VA	25A	30A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	UL Recognized Component, CSA Certified, CE Marked, UL 508	00000000	00000
2 Circuits Controlled with 2 Off (Normally Open)—DPST-NO
With Quick-Disconnect and Screw Terminals
4	24V AC	6.5VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	UL Recognized Component, CSA Certified, CE Marked, UL 508	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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	00000000	00000
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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	00000000	000000
4	208/240V AC	6.5VA	25A	35A	2 hp @ 115 V AC 3 hp @ 230 V AC	__	3.2"	2"	2.3"	0.25"	UL Recognized Component, CSA Certified, CE Marked, UL 508	00000000	00000
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO
With Quick-Disconnect and Screw Terminals
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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	00000000	000000
6	208/240V 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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	00000000	000000
8	208/240V 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"	UL Recognized Component, CSA Certified, CE Marked, UL 508	00000000	000000

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

00000000

Each

0000000

Manual Motor Starters

These starters are more compact than electrically actuated motor starters. Use them when multiple motor circuits are housed in one panel. They provide on/off control for a motor and protect it from overloads—starters will shut the motor off if current exceeds the full-load current rating. Set the adjustable overload relay for the exact overload current needed.

Note: The full-load current rating of your motor must fall within the starter’s overload current range. Look for the full-load current rating on the motor’s faceplate, or estimate the current rating (given the motor’s horsepower and voltage).

Add auxiliary contact blocks to send a signal or connect to another device, such as an alarm or indicating light.

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

Motor Starters
	Switching									Auxiliary Contact Blocks
Overload Current, A	Current, A	Voltage	Electrical Phase (hp)	No. of Poles	Ht.	Wd.	Wire Connection Type		Each		Each
1-1.6	25	600V AC	Single (1/10 hp @ 120 V AC) Three (3/4 hp @ 480 V AC)	3	3.5"	2.1"	Screw-Clamp Terminals	0000000	0000000	0000000	000000
1.6-2.5	25	600V AC	Single (1/6 hp @ 240 V AC) Three (1/2 hp @ 240 V AC) Three (1 hp @ 480 V AC)	3	3.5"	2.1"	Screw-Clamp Terminals	0000000	000000	0000000	00000
2.5-4	25	600V AC	Single (1/8 hp @ 120 V AC) Single (1/3 hp @ 240 V AC) Three (1 hp @ 240 V AC) Three (2 hp @ 480 V AC)	3	3.5"	2.1"	Screw-Clamp Terminals	0000000	000000	0000000	00000
4-6.3	25	600V AC	Single (1/4 hp @ 120 V AC) Single (1/2 hp @ 240 V AC) Three (1 1/2 hp @ 240 V AC) Three (3 hp @ 480 V AC)	3	3.5"	2.1"	Screw-Clamp Terminals	0000000	000000	0000000	00000
6.3-9	25	600V AC	Single (1/3 hp @ 120 V AC) Single (1 hp @ 240 V AC) Three (2 1/2 hp @ 240 V AC) Three (5 hp @ 480 V AC)	3	3.5"	2.1"	Screw-Clamp Terminals	0000000	000000	0000000	00000
9-12.5	25	600V AC	Single (1/2 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (3 hp @ 240 V AC) Three (7 1/2 hp @ 480 V AC)	3	3.5"	2.1"	Screw-Clamp Terminals	0000000	000000	0000000	00000
12.5-16	25	600V AC	Single (1 hp @ 120 V AC) Single (2 1/2 hp @ 240 V AC) Three (5 hp @ 240 V AC) Three (10 hp @ 480 V AC)	3	3.5"	2.1"	Screw-Clamp Terminals	0000000	000000	0000000	00000
16-20	25	600V AC	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (5 hp @ 240 V AC) Three (10 hp @ 480 V AC)	3	3.5"	2.1"	Screw-Clamp Terminals	0000000	000000	0000000	00000
20-25	25	600V AC	Single (2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC) Three (15 hp @ 480 V AC)	3	3.5"	2.1"	Screw-Clamp Terminals	0000000	000000	0000000	00000

PG-16 to 1/2" NPT Thread Adapter

0000000

Each

000000

Enclosures

Enclosure with On/Off Lever

				Conduit
Ht.	Wd.	Dp.	Housing Material	Number of Connections	Thread Size	Environment	Environmental Rating		Each
Enclosure with On/Off Lever
5.9"	3.7"	5.2"	Plastic	4	PG-16	Wet Location	IP64	0000000	000000

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About Relays

About Motor Switches and Starters

Enclosed Medium-Current Relays

DIN-Rail Mount Long-Life Medium-Current Relays

High-Current Relays

DIN-Rail Mount Infrequent-Cycle High-Current Relays

Infrequent-Cycle High-Current Relays

Manual Motor Starters