10 Terminal Switches | McMaster-Carr

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Choosing an Electrical Switch

Design-Your-Own Rocker Switches

Choose from a variety of messages and colored lenses to combine a rocker with a base for a complete switch.

Bases with an on-on position designation alternate power between sets of terminals.

Note: Illuminated switches include a bulb. If wiring the switch and the bulb to the same circuit, the circuit voltage must not exceed bulb voltage.

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

Illuminated Bases with Quick-Disconnect Terminals for 1 3/4" Ht.×7/8" Wd. Panel Cutout

Base

No. of Positions	Position Illuminated	No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Industry Designation	Position Designation	Color	Switching Current @ Voltage	Max. Voltage	Bulb Voltage	Quick-Disconnect Tab Wd.		Each
2	Top/Bottom	2	2 Off (Normally Open) or 2 On (Normally Closed)	Stays Switched (Maintained)	10	DPDT	On-On	Black	15 A @ 125 V AC, 15 A @ 28 V DC	30V DC 250V AC	14V DC	0.25"	0000000	000000
3	Top/Bottom	2	2 Off (Normally Open) or 2 On (Normally Closed)	Stays Switched (Maintained)	10	DPDT	On-Off-On	Black	15 A @ 125 V AC, 15 A @ 28 V DC	30V DC 250V AC	14V DC	0.25"	0000000	00000
3	Top/Bottom	2	2 Off (Normally Open) or 2 On (Normally Closed)	Springs Back (Momentary)	10	DPDT	(On)-Off-(On)	Black	15 A @ 125 V AC, 15 A @ 28 V DC	30V DC 250V AC	14V DC	0.25"	0000000	00000

22 mm Panel-Mount Build-Your-Own Plastic Switches

Choose an actuator and contact block to make your own switch. Actuators are rated NEMA 3S, 4X and 13 for protection from dust, outdoor environments, corrosion, oil, and washdowns. Use legend plates (not included) to label switches. BACO Controls switches are only compatible with BACO manufactured legend plates.

Contact blocks with mounting latch accept additional contact blocks to control more circuits.

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

Contact Blocks with Mounting Latch, Bulb, and Bulb Holder

No. of Circuits Controlled	Switch Starting Position	No. of Terminals	Industry Designation	Switching Current @ Voltage	Max. Voltage	Dp. Behind Panel	Wire Connection Type	Environmental Rating	Specifications Met	Choose a Bulb Voltage	Choose a Bulb Color		Each
4	2 Off (Normally Open) and 2 On (Normally Closed)	10	4PST-2NO/2NC	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	2 9/16"	Screw Terminals	IP20	UL Listed, C-UL Listed, CE Marked	120V AC, 240V AC, 24V AC, 24V DC	Green, Red, White, Yellow	0000000	000000

Replacement Contact Retaining Clip

000000

Each

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Replacement Bulb Holders

Bulb Voltage	Bulb Type	Environmental Rating	Specifications Met	Choose a Bulb Color		Each
24V AC/24V DC	LED	IP20	UL Listed, C-UL Listed, CE Marked	Green, Red, White, Yellow	0000000	000000
120V AC	LED	IP20	UL Listed, C-UL Listed, CE Marked	Green, Red, White, Yellow	0000000	00000
240V AC	LED	IP20	UL Listed, C-UL Listed, CE Marked	Green, Red, White, Yellow	0000000	00000

Contact Blocks

No. of Circuits Controlled	Switch Starting Position	No. of Terminals	Industry Designation	Environmental Rating	Specifications Met		Each
1	1 Off (Normally Open)	2	SPST-NO	IP20	UL Listed, C-UL Listed, CE Marked	000000	00000

Rotary Switches

For 1/4" Panel Cutout Dia.

Control multiple devices with one switch. Turn the shaft to change switch positions. Each position closes a set of contacts per circuit, so you can select between multiple devices on one or more circuits.

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

						Shaft
No. of Circuits Controlled	Switch Action	No. of Positions	No. of Terminals	Dp. Behind Panel	O'all Dia.	Lg.	Dia.			Each
Nickel-Plated Brass with Black Plastic Knob
With Solder Pin Terminals for 1/4" Panel Cutout Dia.
2	Stays Switched (Maintained)	4	10	1 1/16"	9/16"	13/16"	1/8"	2 A @ 125 V AC, 1 A @ 30 V DC	0000000	000000

DIN-Rail Mount Solid State Relays

Relay with Integrated Heat Sink and Fan

Unlike mechanical relays, these solid state relays have no moving parts, so they require less maintenance and last longer, switch faster, and are quieter. They mount on 35 mm DIN rail (also known as DIN 3) for fast installation. IP20 rated, their terminals are recessed, so they prevent fingers and other objects from touching live circuits.

Relays with an integrated heat sink disperse heat to increase the relay’s current rating.

Relays with an integrated fan are best for applications that generate more heat. The fan automatically turns on to provide additional cooling. When the temperature exceeds 176° F, an alarm sends a signal to an external device, such as a controller or indicating light.

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

3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO
Number of Terminals	Input Voltage	Control Current, mA	Switching Current @ Voltage (Load Type)	Max. Switching Voltage	hp @ Switching Voltage	Ht.	Wd.	Dp.	Features		Each
Three Phase
10	24V AC, 120V AC, 208V AC, 240V AC, 277V AC, 24V DC, 48V DC, 60V DC, 120V DC	2	40 A @ 600 V AC (Full Load)	660V AC	5 hp @ 230 V AC 10 hp @ 480 V AC	5.31"	2.13"	3.739"	Integrated Heat Sink, Integrated Fan, LED Indicator	0000000	0000000
10	24V AC, 120V AC, 208V AC, 240V AC, 277V AC, 24V DC, 48V DC, 60V DC, 120V DC	2	65 A @ 600 V AC (Full Load)	660V AC	10 hp @ 230 V AC 20 hp @ 480 V AC	5.55"	2.84"	4.679"	Integrated Heat Sink, Integrated Fan, LED Indicator	0000000	000000
10	5V DC, 6V DC, 12V DC, 24V DC, 30V DC	10	40 A @ 600 V AC (Full Load)	660V AC	5 hp @ 230 V AC 10 hp @ 480 V AC	5.31"	2.13"	3.739"	Integrated Heat Sink, Integrated Fan, LED Indicator	0000000	000000
10	5V DC, 6V DC, 12V DC, 24V DC, 30V DC	10	65 A @ 600 V AC (Full Load)	660V AC	10 hp @ 230 V AC 20 hp @ 480 V AC	5.55"	2.84"	4.679"	Integrated Heat Sink, Integrated Fan, LED Indicator	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. They mount directly to 35 mm DIN rail (also known as DIN 3 rail) for fast installation. These relays have recessed terminals that prevent fingers and other objects from touching live circuits.

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

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

10 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	6.5VA	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	6.5VA	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	6.5VA	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	6.5VA	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	6.5VA	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	6.5VA	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 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

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

DIN-Rail Mount Touch-Safe Screw Terminal Relays

Quickly and safely mount these relays on 35 mm DIN rail (also known as DIN 3). IP20 rated, they have recessed terminals that prevent fingers and other objects from touching live circuits.

Relays that control 3 and 4 circuits are built to IEC dimensional standards and are often called IEC contactors.

Auxiliary contacts (sold separately) allow you to add a signaling device or control another relay. You can add one auxiliary contact to all of these relays.

Relay

		Control				hp @ Switching Voltage
Number of Terminals	Input Voltage	Power	Current, mA	Switching Current @ Voltage (Load Type)	Max. Switching Voltage	Single Phase	Three Phase	Ht.	Wd.	Dp.		Each
3 Circuits Controlled with 3 Off (Normally Open)—3PST-NO
With 1 Auxiliary Contact—1 Off (Normally Open)
10	24V AC	4VA	__	20 A @ 600 V AC (Resistive Load) 6 A @ 600 V AC (Full Load)	600 V AC	1 1/2 hp @ 240 V AC 1/2 hp @ 120 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	000000000	000000
10	120V AC	4VA	__	20 A @ 600 V AC (Resistive Load) 6 A @ 600 V AC (Full Load)	600 V AC	1 1/2 hp @ 240 V AC 1/2 hp @ 120 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	000000000	00000
10	240V AC	4VA	__	20 A @ 600 V AC (Resistive Load) 6 A @ 600 V AC (Full Load)	600 V AC	1 1/2 hp @ 240 V AC 1/2 hp @ 120 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	000000000	00000
10	24V DC	3.2W	__	20 A @ 600 V AC (Resistive Load) 6 A @ 600 V AC (Full Load)	600 V AC	1 1/2 hp @ 240 V AC 1/2 hp @ 120 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	00000000	00000
With 1 Auxiliary Contact—1 On (Normally Closed)
10	24V AC	4VA	__	20 A @ 600 V AC (Resistive Load) 6 A @ 600 V AC (Full Load)	600 V AC	1 1/2 hp @ 240 V AC 1/2 hp @ 120 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	000000000	00000
10	120V AC	4VA	__	20 A @ 600 V AC (Resistive Load) 6 A @ 600 V AC (Full Load)	600 V AC	1 1/2 hp @ 240 V AC 1/2 hp @ 120 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	000000000	00000
10	240V AC	4VA	__	20 A @ 600 V AC (Resistive Load) 6 A @ 600 V AC (Full Load)	600 V AC	1 1/2 hp @ 240 V AC 1/2 hp @ 120 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	000000000	00000
10	24V DC	3.2W	__	20 A @ 600 V AC (Resistive Load) 6 A @ 600 V AC (Full Load)	600 V AC	1 1/2 hp @ 240 V AC 1/2 hp @ 120 V AC	3 hp @ 240 V AC 5 hp @ 480 V AC 5 hp @ 600 V AC	2.3"	1.7"	2.2"	00000000	00000
4 Circuits Controlled with 2 Off (Normally Open) and 2 On (Normally Closed)—4PST-2NO/2NC
10	24V DC	__	133	10 A @ 600 V AC	600 V AC	__	__	2.3"	1.7"	2.2"	0000000	000000
4 Circuits Controlled with 3 Off (Normally Open) and 1 On (Normally Closed)—4PST-3NO/1NC
10	24V DC	__	133	10 A @ 600 V AC	600 V AC	__	__	2.3"	1.7"	2.2"	0000000	000000
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO
10	24V AC	__	125	10 A @ 600 V AC	600 V AC	__	__	2.3"	1.7"	2.2"	00000000	00000
10	120V AC	__	25	10 A @ 600 V AC	600 V AC	__	__	2.3"	1.7"	2.2"	00000000	00000
10	240V AC	__	12.5	10 A @ 600 V AC	600 V AC	__	__	2.3"	1.7"	2.2"	00000000	00000
10	24V DC	__	133	10 A @ 600 V AC	600 V AC	__	__	2.3"	1.7"	2.2"	0000000	000000

Auxiliary Contacts

Front-Mount Auxiliary Contact

Number of Circuits Controlled	For Relay Width	Switch Starting Position	Industry Designation	Mounting Location		Each
2	1.7"	1 Off (Normally Open) and 1 On (Normally Closed)	DPST-1NO/1NC	Front	00000000	000000

Screw Terminal Relays

Use the screw terminals to hardwire these relays. The built-in enclosure protects contacts from dust and dirt. These relays accept voltage drops up to 50% of the rated voltage without switching. They’re often used 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	Maximum Switching Voltage	hp @ Switching Voltage	Ht.	Wd.	Dp.		Each
4 Circuits Controlled with 2 Off (Normally Open) and 2 On (Normally Closed)—4PST-2NO/2NC
10	120V AC	22	25 A @ 240 V AC/24 V DC	8 A @ 240 V AC/24 V DC	250V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	0000000	000000
10	24V DC	83	25 A @ 240 V AC/24 V DC	8 A @ 240 V AC/24 V DC	250V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	0000000	00000
4 Circuits Controlled with 3 Off (Normally Open) and 1 On (Normally Closed)—4PST-3NO/1NC
10	120V AC	22	25 A @ 240 V AC/24 V DC	8 A @ 240 V AC/24 V DC	250V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	0000000	00000
10	24V DC	83	25 A @ 240 V AC/24 V DC	8 A @ 240 V AC/24 V DC	250V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	0000000	00000
4 Circuits Controlled with 4 Off (Normally Open)—4PST-NO
10	120V AC	22	25 A @ 240 V AC/24 V DC	__	250V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	0000000	00000
10	240V AC	11	25 A @ 240 V AC/24 V DC	__	250V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	0000000	00000
10	24V DC	83	25 A @ 240 V AC/24 V DC	__	250V AC	1 1/2 hp @ 120 V AC 3 hp @ 240 V AC 3 hp @ 277 V AC	1.4"	2"	2.5"	0000000	00000

Machine-Guard 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. Mount them on 35 mm DIN rail (also known as DIN 3 rail) or flat surfaces. These relays are built to IEC dimensional standards.

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

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	Max. Switching Voltage	Ht.	Wd.	Dp.		Each
10	24V AC	125	10A	600V AC	2.3"	1.7"	2.2"	00000000	000000
10	120V AC	25	10A	600V AC	2.3"	1.7"	2.2"	00000000	00000
10	240V AC	12.5	10A	600V AC	2.3"	1.7"	2.2"	00000000	00000
4 Circuits Controlled with 3 Off (Normally Open) and 1 On (Normally Closed)—4PST-3NO/1NC
10	24V AC	125	10A	600V AC	2.3"	1.7"	2.2"	00000000	00000
10	120V AC	25	10A	600V AC	2.3"	1.7"	2.2"	00000000	00000
10	240V AC	12.5	10A	600V AC	2.3"	1.7"	2.2"	00000000	00000

Auxiliary Contacts

Auxiliary Contact

Number of Circuits Controlled	Switch Starting Position	Industry Designation	Mounting Location	For Relay Width		Each
2	1 Off (Normally Open) and 1 On (Normally Closed)	DPST-1NO/1NC	Front	1.7"	00000000	000000

Latching Relays

10-Terminal Relay

10-Terminal Relay Socket

A single, momentary input voltage switches these relays and latches them in position, so they don't require a constant input voltage to stay switched. A second momentary voltage will release the latch.

Relay sockets (sold separately) mount to 35 mm DIN rail (also known as DIN 3 rail) for fast installation.

Relays										Relay Sockets
Number of Terminals	Input Voltage	Control Current, mA	Switching Current @ 240V AC/24V DC	Ht.	Wd.	Dp.	Quick-Disconnect Tab Wd.		Each		Each
2 Circuits Controlled with 2 Off (Normally Open) or 2 On (Normally Closed)—DPDT
10	24V AC	27	3A	1.1"	0.8"	1.4"	0.102"	0000000	0000000	0000000	000000
10	12V DC	110	3A	1.1"	0.8"	1.4"	0.102"	0000000	00000	0000000	00000
10	24V DC	52	3A	1.1"	0.8"	1.4"	0.102"	0000000	00000	0000000	00000