Key Panel Actuators | McMaster-Carr

	Switch Starting Position Switch Starting Position

1 Off (Normally Open)

1 On (Normally Closed)

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

2 Off (Normally Open)

2 On (Normally Closed)

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

	Number of Terminals Number of Terminals

	Component Component

Contact Block with Mounting
Latch

Contact Block

Key Actuator

	Switching Voltage Switching Voltage

120V AC

24V DC

	For Actuator Type For Actuator Type

Key

Lever

Push Button

	Switching Current Switching Current

2.5A

	Terminal Numbering Terminal Numbering

	Industry Designation Industry Designation

	Number of Circuits Controlled Number of Circuits Controlled

	Specifications Met Specifications Met

CSA

CE Marked

CCC Marked

	Maximum Voltage Maximum Voltage

600V AC

600V DC

	Depth Behind Panel Depth Behind Panel

1 11/16"

1 3/4"

1 13/16"

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

DFARS Specialty Metals
COTS-Exempt

	Number of Positions Number of Positions

	Environmental Rating Environmental Rating

	Switch Action Switch Action

Stays Switched (Maintained)

Springs Back (Momentary)

	For Panel Cutout Diameter For Panel Cutout Diameter

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

RoHS Compliant

	Key Removal Position Key Removal Position

Left

Center

Right

	Environment Environment

High-
Pressure
Washdown

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

REACH Compliant

	Actuator Base Material Actuator Base Material

Metal

Plastic

	Key Number Key Number

36 Products

Choosing an Electrical Switch

30 mm Panel-Mount Build-Your-Own Metal Switches

Choose an actuator and contact block to make your own switch. All switches are rated for protection from washdowns and oil/coolant spraying. NEMA 4X rated switches are also protected from corrosion. Use legend plates (not included) to label switches.

Key actuators are keyed alike, so they will all open with the same key.

Switch guards protect flush and projecting switches from accidental activation.

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

Key Actuators

2 Position
Switch Action	Switching Current @ Voltage	Max. Voltage	Dia.	For Max. No. of Contact Blocks	No. of Keys Included	Key Removal Position	Key Number	Environmental Rating		Each
Springs Back (Momentary)	6 A @ 120 V AC, 5 A @ 24 V DC	600V AC/600V DC	1 1/8"	4	2	Left	501CH	NEMA 4, NEMA 13	00000000	0000000
Stays Switched (Maintained)	6 A @ 120 V AC, 5 A @ 24 V DC	600V AC/600V DC	1 1/8"	4	2	Left, Right	501CH	NEMA 4, NEMA 13	00000000	000000
3 Position
Springs Back (Momentary)	6 A @ 120 V AC, 5 A @ 24 V DC	600V AC/600V DC	1 1/8"	4	2	Center	501CH	NEMA 4, NEMA 13	00000000	000000
Stays Switched (Maintained)	6 A @ 120 V AC, 5 A @ 24 V DC	600V AC/600V DC	1 1/8"	4	2	Center, Left, Right	501CH	NEMA 4, NEMA 13	00000000	000000

Replacement Key

00000000

Each

00000

Contact Blocks

No. of Circuits Controlled	Switch Starting Position	No. of Terminals	Industry Designation	Switching Current @ Voltage	Max. Voltage	Dp. Behind Panel	Wire Connection Type		Each
1	1 Off (Normally Open)	2	SPST-NO	6 A @ 120 V AC, 5 A @ 24 V DC	600V AC 600V DC	1 3/4"	Screw Terminals	00000000	000000
1	1 On (Normally Closed)	2	SPST-NC	6 A @ 120 V AC, 5 A @ 24 V DC	600V AC 600V DC	1 3/4"	Screw Terminals	00000000	00000
2	1 Off (Normally Open) and 1 On (Normally Closed)	4	DPST-1NO/1NC	6 A @ 120 V AC, 5 A @ 24 V DC	600V AC 600V DC	1 3/4"	Screw Terminals	00000000	00000

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

Choose an actuator and contact block to make your own switch. All switches are rated NEMA 4 and 13.

Flush and projecting switches are rated IP66.

Key actuators are keyed alike, so they will all open with the same key.

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.

Key Actuators

2 Positions
Switch Action	Dia.	For Max. No. of Contact Blocks	Key Removal Position	Environmental Rating	Specifications Met	Actuator Color		Each
Springs Back (Momentary)	1 3/16"	6	Right	NEMA 4, NEMA 13, IP66	UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	Black	0000000	000000
Stays Switched (Maintained)	1 3/16"	6	Left	NEMA 4, NEMA 13, IP66	UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	Black	0000000	00000
3 Positions
Springs Back (Momentary), Stays Switched (Maintained)	1 3/16"	6	Left	NEMA 4, NEMA 13, IP66	UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	Black	0000000	00000
Stays Switched (Maintained)	1 3/16"	6	Left	NEMA 4, NEMA 13, IP66	UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	Black	0000000	00000

Replacement Keys

00000000

Pkg.

00000

Contact Blocks with Mounting Latch for Lever and Key Actuators

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		Each
1	1 Off (Normally Open)	2	SPST-NO	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC	1 13/16"	Screw Terminals	IP20	UL Listed, UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	00000000	000000
2	2 Off (Normally Open)	4	DPST-NO	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC	1 13/16"	Screw Terminals	IP20	UL Listed, UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	00000000	00000
2	1 Off (Normally Open) and 1 On (Normally Closed)	4	DPST-1NO/1NC	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC	1 13/16"	Screw Terminals	IP20	UL Listed, UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	00000000	00000

Contact Blocks with Mounting Latch for Push-Button, Lever, and Key Actuators

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		Each
1	1 On (Normally Closed)	2	SPST-NC	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC	1 13/16"	Screw Terminals	IP20	UL Listed, UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	00000000	000000
2	2 On (Normally Closed)	4	DPST-NC	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC	1 13/16"	Screw Terminals	IP20	UL Listed, UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	00000000	00000

Contact Blocks

For Actuator Style	No. of Circuits Controlled	Switch Starting Position	No. of Terminals	Industry Designation	Environmental Rating	Specifications Met		Each
Push Button/Lever/Key	1	1 On (Normally Closed)	2	SPST-NC	IP20	UL Listed, UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	00000000	000000
Lever/Key	1	1 Off (Normally Open)	2	SPST-NO	IP20	UL Listed, UL Recognized Component, CSA Certified, CE Marked, CCC Marked, UL 508	00000000	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.

Key actuators are keyed alike, so they will all open with the same key.

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

Mounting tools make it easier to install switches in crowded panels.

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

Key Actuators

2 Position
Switch Action	Dia.	For Max. No. of Contact Blocks	No. of Keys Included	Key Removal Position	Environmental Rating	Specifications Met	Manufacturer	Actuator Color		Each
Springs Back (Momentary)	1 3/16"	6	2	Left	NEMA 3S, NEMA 4X, NEMA 13, IP69K, IP66, IK05	UL Recognized Component, C-UL Recognized Component, UL 508	BACO Controls	Black	0000000	000000
Stays Switched (Maintained)	1 3/16"	6	2	Left	NEMA 3S, NEMA 4X, NEMA 13, IP69K, IP66, IK05	UL Recognized Component, C-UL Recognized Component, UL 508	BACO Controls	Black	0000000	00000
3 Position
Springs Back (Momentary)	1 3/16"	6	2	Center	NEMA 3S, NEMA 4X, NEMA 13, IP69K, IP66, IK05	UL Recognized Component, C-UL Recognized Component, UL 508	BACO Controls	Black	0000000	00000
Springs Back (Momentary), Stays Switched (Maintained)	1 3/16"	6	2	Center	NEMA 3S, NEMA 4X, NEMA 13, IP69K, IP66, IK05	UL Recognized Component, C-UL Recognized Component, UL 508	BACO Controls	Black	0000000	00000
Stays Switched (Maintained)	1 3/16"	6	2	Center	NEMA 3S, NEMA 4X, NEMA 13, IP69K, IP66, IK05	UL Recognized Component, C-UL Recognized Component, UL 508	BACO Controls	Black	0000000	00000

Replacement Key	0000000	Pkg.	000000
Mounting Tool	0000000	Each	00000

Contact Blocks with Mounting Latch

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		Each
1	1 Off (Normally Open)	2	SPST-NO	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 11/16"	Screw Terminals	IP20	UL Listed, C-UL Listed, CE Marked	0000000	000000
1	1 On (Normally Closed)	2	SPST-NC	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 11/16"	Screw Terminals	IP20	UL Listed, C-UL Listed, CE Marked	0000000	00000
2	2 Off (Normally Open)	4	DPST-NO	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 11/16"	Screw Terminals	IP20	UL Listed, C-UL Listed, CE Marked	0000000	00000
2	1 Off (Normally Open) and 1 On (Normally Closed)	4	DPST-1NO/1NC	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 11/16"	Screw Terminals	IP20	UL Listed, C-UL Listed, CE Marked	0000000	00000
2	2 On (Normally Closed)	4	DPST-NC	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	1 11/16"	Screw Terminals	IP20	UL Listed, C-UL Listed, CE Marked	0000000	00000
4	2 Off (Normally Open) and 2 On (Normally Closed)	8	4PST-2NO/2NC	6 A @ 120 V AC, 2.5 A @ 24 V DC	600V AC 600V DC	2"	Screw Terminals	IP20	UL Listed, C-UL Listed, CE Marked	0000000	00000

Replacement Contact Retaining Clip

000000

Each

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
1	1 On (Normally Closed)	2	SPST-NC	IP20	UL Listed, C-UL Listed, CE Marked	000000	0000