3PST Electrical Boxes | McMaster-Carr

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	Switching Current Switching Current

	Electrical Phase Electrical Phase

Three

Single

	Switching Voltage Switching Voltage

	Voltage Voltage

	For Number of Wires For Number of Wires

	Power Power

	Environment Environment

	For Number of Fuses For Number of Fuses

	Number of Circuits Controlled Number of Circuits Controlled

	Environmental Rating Environmental Rating

	Knockout Trade Size Knockout Trade Size

	Actuator Color Actuator Color

	Red
	Black
	Gray

	Housing Material Housing Material

Steel

Plastic

Stainless Steel

	Housing Color Housing Color

	Gray
	Yellow

	Height Height

	Width Width

	Industry Designation Industry Designation	Show

3PST

	Industry Designation Industry Designation	Hide

	Switch Type Switch Type

Disconnect

	For Fuse Class For Fuse Class

RK1

RK5

	Specifications Met Specifications Met

CE Marked

CSA

Fed. Spec.

	Number of Mounting Holes Number of Mounting Holes

	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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96 Products

Choosing an Electrical Switch

Protected by a steel enclosure, these switches withstand tougher conditions than switches in a plastic housing. Also known as safety switches, they have quick-make/quick-break action to eliminate arcing and prolong switch life. They have a lockout to secure in the off position using a padlock (not included).

Use switches with a fuse holder where overload protection is needed. When used with UL Class RK1, RK5, or T fuses, they require rejection-style fuse clips. Note: Horsepower ratings are based on time-delay fuses installed.

Switches with safety interlock keep the door closed when the switch is on, and prevent the switch from turning on when the door is open.

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

Switches
Switching													Rejection-Style Fuse Clips for RK1 and RK5 Fuse Class
Current, A	Voltage	Switch Action	Industry Designation	Electrical Phase (hp)	For No. of Wires	For Fuse Class	Ht.	Wd.	Environmental Rating	Specifications Met		Each		Each
Enamel-Coated Steel with Black/Red Actuator
3 Circuits with Lockout, Safety Interlock
30	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Single (10 hp @ 600 V AC) Three (30 hp @ 600 V AC)	3	__	14 5/8"	7 9/16"	NEMA 1	UL Listed, Fed. Spec. WS-865C	0000000	0000000	000000	00
60	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Single (30 hp @ 600 V AC) Three (60 hp @ 600 V AC)	3	__	17 1/2"	10 1/2"	NEMA 1	UL Listed, Fed. Spec. WS-865C	0000000	000000	000000	00
3 Circuits with Lockout, Safety Interlock, Fuse Holder
30	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (20 hp @ 600 V AC)	3	RK1, RK5, J, K5, H	14 5/8"	7 9/16"	NEMA 1	UL Listed, Fed. Spec. WS-865C	0000000	000000	00000000	000000
30	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (20 hp @ 600 V AC)	4	RK1, RK5, J, K5, H	14 5/8"	7 9/16"	NEMA 1	UL Listed, Fed. Spec. WS-865C	0000000	000000	00000000	00000
60	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (50 hp @ 600 V AC)	3	RK1, RK5, J, K5, H	17 1/2"	10 1/2"	NEMA 1	UL Listed, Fed. Spec. WS-865C	0000000	000000	00000000	00000
60	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (50 hp @ 600 V AC)	4	RK1, RK5, J, K5, H	17 1/2"	10 1/2"	NEMA 1	UL Listed, Fed. Spec. WS-865C	0000000	000000	00000000	00000
100	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (75 hp @ 600 V AC)	4	RK1, RK5, J, K5, H	21 1/4"	10 1/4"	NEMA 1	UL Listed, Fed. Spec. WS-865C	0000000	000000	00000000	00000
200	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (150 hp @ 600 V AC)	4	RK1, RK5, J, K5, H	29"	18 1/2"	NEMA 1	UL Listed, Fed. Spec. WS-865C	0000000	000000	00000000	00000
Powder-Coated Steel with Red Actuator
3 Circuits with Lockout, Safety Interlock
100	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Single (15 hp @ 240 V AC) Three (30 hp @ 240 V AC)	3	__	23 1/8"	11 3/4"	NEMA 1	UL Listed	0000000	000000	000000	00
3 Circuits with Lockout, Safety Interlock, Fuse Holder
30	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC)	3	RK1, RK5, K5, H	14 1/4"	6 5/8"	NEMA 1	UL Listed	0000000	000000	00000000	00000
100	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Single (15 hp @ 240 V AC) Three (30 hp @ 240 V AC)	4	RK1, RK5, K5, T, H	23 1/8"	11 3/4"	NEMA 1	UL Listed	0000000	000000	00000000	00000
3 Circuits with Lockout, Fuse Holder
60	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Single (10 hp @ 240 V AC) Three (15 hp @ 240 V AC)	4	RK1, RK5, K5, H	10 1/16"	6 7/16"	NEMA 1	UL Listed	0000000	000000	00000000	00000
3 Circuits with Lockout
30	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC)	3	__	6 3/8"	4 9/16"	NEMA 1	UL Listed	0000000	00000	000000	00
60	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Three (15 hp @ 240 V AC)	3	__	8 9/16"	5 7/16"	NEMA 1	UL Listed	0000000	00000	000000	00

Rejection-Style Fuse Clip for T Fuse Class

00000000

Each

000000

Outdoor Durable Disconnect Switches

A raintight NEMA 3R rated enclosure protects these switches from falling liquids and light splashing. The enclosure is steel, so it withstands tougher conditions than plastic enclosures. All have quick-make/quick-break action to eliminate arcing and prolong switch life. They have a lockout to secure in the off position using a padlock (not included).

Switches with safety interlock keep the door closed when the switch is on, and prevent the switch from turning on when the door is open.

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

Switches
Switching											Rejection-Style Fuse Clips for RK1 and RK5 Fuse Class
Current, A	Voltage	Switch Action	Industry Designation	Electrical Phase (hp)	For No. of Wires	For Fuse Class	Ht.	Wd.		Each		Each
Gray Enamel-Coated Steel with Black/Red Actuator
3 Circuits with Lockout, Safety Interlock
30	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Single (10 hp @ 240 V AC) Three (30 hp @ 600 V AC)	3	__	14 7/8"	7 11/16"	0000000	0000000	000000	00
60	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Single (30 hp @ 240 V AC) Three (60 hp @ 600 V AC)	3	__	17 1/2"	10 1/2"	0000000	000000	000000	00
3 Circuits with Lockout, Safety Interlock, Fuse Holder
30	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (20 hp @ 600 V AC)	3	RK1, RK5, J, H	14 7/8"	7 11/16"	0000000	000000	00000000	000000
30	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (20 hp @ 600 V AC)	4	RK1, RK5, J, H	14 7/8"	7 11/16"	0000000	000000	00000000	00000
60	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (50 hp @ 600 V AC)	3	RK1, RK5, J, H	17 1/2"	10 1/2"	0000000	000000	00000000	00000
60	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (50 hp @ 600 V AC)	4	RK1, RK5, J, H	17 1/2"	10 1/2"	0000000	000000	00000000	00000
100	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (75 hp @ 600 V AC)	4	RK1, RK5, J, H	21 1/4"	10 1/4"	0000000	000000	00000000	00000
200	600V AC/ 600V DC	Stays Switched (Maintained)	3PST	Three (150 hp @ 600 V AC)	4	RK1, RK5, J, H	29 1/4"	18 5/8"	0000000	00000000	00000000	00000
Gray Powder-Coated Steel with Red Actuator
3 Circuits with Lockout
30	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Three (7 1/2 hp @ 240 V AC)	3	__	6 3/8"	4 9/16"	0000000	000000	000000	00
60	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Three (15 hp @ 240 V AC)	3	__	8 9/16"	5 7/16"	0000000	000000	000000	00
3 Circuits with Lockout, Fuse Holder
30	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC)	4	RK1, RK5, K5, H	8 9/16"	5 7/16"	0000000	000000	00000000	00000
60	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Single (10 hp @ 240 V AC) Three (15 hp @ 240 V AC)	4	RK1, RK5, K5, H	10 1/16"	6 7/16"	0000000	000000	00000000	00000
3 Circuits with Lockout, Safety Interlock
100	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Three (30 hp @ 240 V AC)	3	__	23 1/8"	12"	0000000	000000	000000	00
3 Circuits with Lockout, Safety Interlock, Fuse Holder
100	240V AC/ 250V DC	Stays Switched (Maintained)	3PST	Single (15 hp @ 240 V AC) Three (30 hp @ 240 V AC)	4	RK1, RK5, K5, T, H	23 1/8"	12"	0000000	000000	00000000	00000

Rejection-Style Fuse Clip for T Fuse Class

00000000

Each

000000

Washdown Enclosed Disconnect Switches

Rated IP66, these switches are protected from washdowns. They cut power and keep it isolated to prevent equipment from starting up during inspection and maintenance.

Switches with lockout secure in the off position with a padlock with a maximum shackle diameter of 5/16” (not included).

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

Use additional power poles to control more than three circuits. Add neutral poles to open and close the neutral leg of a three phase system.

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

Switch with Plastic Housing

Switch with Lockout and Plastic Housing

Switch with Lockout and Stainless Steel Housing

Switching
Current, A	Voltage	Switch Action	Industry Designation	Electrical Phase (hp)	Ht.	Wd.		Each
Plastic Housing with Red Actuator
3 Circuits
25	600V AC	Stays Switched (Maintained)	3PST	Single (1 1/2 hp @ 240 V AC) Single (3/4 hp @ 120 V AC) Three (3 hp @ 240 V AC)	5 7/8"	4 5/16"	00000000	000000
32	600V AC	Stays Switched (Maintained)	3PST	Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (5 hp @ 240 V AC)	5 7/8"	4 5/16"	00000000	00000
3 Circuits with Lockout
25	600V AC	Stays Switched (Maintained)	3PST	Single (1 1/2 hp @ 240 V AC) Single (3/4 hp @ 120 V AC) Three (3 hp @ 240 V AC)	5 7/8"	3 7/8"	00000000	00000
32	600V AC	Stays Switched (Maintained)	3PST	Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (5 hp @ 240 V AC)	5 7/8"	3 7/8"	00000000	00000
Plastic Housing with Gray Actuator
3 Circuits
25	600V AC	Stays Switched (Maintained)	3PST	Single (1 1/2 hp @ 240 V AC) Single (3/4 hp @ 120 V AC) Three (3 hp @ 240 V AC)	5 7/8"	4 5/16"	00000000	00000
32	600V AC	Stays Switched (Maintained)	3PST	Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (5 hp @ 240 V AC)	5 7/8"	4 5/16"	00000000	00000
3 Circuits with Lockout
25	600V AC	Stays Switched (Maintained)	3PST	Single (1 1/2 hp @ 240 V AC) Single (3/4 hp @ 120 V AC) Three (3 hp @ 240 V AC)	5 7/8"	3 7/8"	00000000	00000
32	600V AC	Stays Switched (Maintained)	3PST	Single (1 hp @ 120 V AC) Single (2 hp @ 240 V AC) Three (5 hp @ 240 V AC)	5 7/8"	3 7/8"	00000000	00000
Stainless Steel Housing with Red Actuator
3 Circuits with Lockout
20	600V AC	Stays Switched (Maintained)	3PST	Single (1 hp @ 240 V AC) Single (1/3 hp @ 120 V AC) Three (2 hp @ 240 V AC)	7 7/8"	5 15/16"	000000	000000
30	600V AC	Stays Switched (Maintained)	3PST	Single (1 1/2 hp @ 240 V AC) Single (1 hp @ 120 V AC) Three (5 hp @ 240 V AC)	7 7/8"	5 15/16"	0000000	000000
40	600V AC	Stays Switched (Maintained)	3PST	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC)	7 7/8"	5 15/16"	0000000	000000
60	600V AC	Stays Switched (Maintained)	3PST	Single (3 hp @ 120 V AC) Single (7 1/2 hp @ 240 V AC) Three (15 hp @ 240 V AC)	7 7/8"	5 15/16"	0000000	000000
80	600V AC	Stays Switched (Maintained)	3PST	Single (10 hp @ 240 V AC) Single (3 hp @ 120 V AC) Three (20 hp @ 240 V AC)	7 7/8"	5 15/16"	0000000	000000

"Main Switch" Label with Adhesive Back—13/16" Ht. × 3 3/16" Wd.

0000000

Each

00000

Replacement Actuator for 3 Circuit Switches with Lockout

For Switching Current	Housing Color	Actuator Color	Ht.	Wd.	Dp.		Each
25A, 32A, 50A, 63A	Yellow	Red	2 9/16"	2 9/16"	1 5/16"	0000000	000000

Auxiliary Contact Blocks for Switches with Plastic Housing

Switching Current, A		Each
10	0000000	000000

Additional Power Poles

Switching Current, A	Specifications Met		Each
20	UL Listed, C-UL Listed, CE Marked	00000000	00000
25	UL Listed, CE Marked	00000000	00000
30	UL Listed, C-UL Listed, CE Marked	00000000	0000
32	UL Listed, CE Marked	00000000	00000
40	UL Listed, C-UL Listed, CE Marked	00000000	00000
60	UL Listed, C-UL Listed, CE Marked	00000000	00000
80	UL Listed, C-UL Listed, CE Marked	00000000	00000

Neutral Poles for Switches with Plastic Housing

Switching Current, A	Specifications Met		Each
25	UL Listed, CE Marked	00000000	000000
32	UL Listed, CE Marked	00000000	00000

Additional Junction Blocks for Switches with Plastic Housing

For Current, A	Specifications Met		Each
25/32	UL Listed, CE Marked	00000000	000000

Enclosed Disconnect Switches

Cut power and keep it isolated to prevent equipment from starting up during inspection and maintenance. These switches are housed in a protective enclosure.

Switches with lockout secure in the off position with a padlock with a maximum shackle diameter of 5/16” (not included).

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

Use additional power poles to control more than three circuits. Add neutral poles to open and close the neutral leg of a three phase system.

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

Three-Circuit Switch

Three-Circuit Switch with Lockout

Switching
Current, A	Voltage	Industry Designation	Electrical Phase (hp)	Ht.	Wd.	Environmental Rating		Each
Plastic Housing with Red Actuator
Stays Switched (Maintained)
3 Circuits
50	600V AC	3PST	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	0000000
63	600V AC	3PST	Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (10 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
80	600V AC	3PST	Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (20 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
100	600V AC	3PST	Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (25 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
3 Circuits with Lockout
50	600V AC	3PST	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
63	600V AC	3PST	Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (10 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
80	600V AC	3PST	Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (20 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
100	600V AC	3PST	Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (25 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
Plastic Housing with Gray Actuator
Stays Switched (Maintained)
3 Circuits
50	600V AC	3PST	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
63	600V AC	3PST	Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (10 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
80	600V AC	3PST	Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (20 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
100	600V AC	3PST	Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (25 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
3 Circuits with Lockout
50	600V AC	3PST	Single (1 1/2 hp @ 120 V AC) Single (3 hp @ 240 V AC) Three (7 1/2 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
63	600V AC	3PST	Single (3 hp @ 120 V AC) Single (5 hp @ 240 V AC) Three (10 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
80	600V AC	3PST	Single (3 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (20 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000
100	600V AC	3PST	Single (5 hp @ 120 V AC) Single (10 hp @ 240 V AC) Three (25 hp @ 240 V AC)	8 11/16"	5 7/8"	IP40, NEMA 3	00000000	000000

"Main Switch" Label with Adhesive Back—13/16" Ht. × 3 3/16" Wd.

0000000

Each

00000

Replacement Actuator for 3 Circuit Switches with Lockout

				Plastic Housing with Red Actuator
For Switching Current	Ht.	Wd.	Dp.		Each
25A, 32A, 50A, 63A	2 9/16"	2 9/16"	1 5/16"	0000000	000000
80A, 100A	3 3/8"	3 3/8"	1 5/16"	0000000	00000

Auxiliary Contact Block for 3 Circuit Switches

Switching Current, A		Each
10	0000000	000000

Additional Power Poles for 3 Circuit Switches

Switching Current, A	Specifications Met		Each
50	UL Listed, CE Marked	00000000	000000
63	UL Listed, CE Marked	00000000	00000
80	UL Listed, CE Marked	00000000	00000
100	UL Listed, CE Marked	00000000	00000

Neutral Poles for 3 Circuit Switches

Switching Current, A	Specifications Met		Each
50	UL Listed, CE Marked	00000000	000000
63	UL Listed, CE Marked	00000000	00000
80	UL Listed, CE Marked	00000000	00000
100	UL Listed, CE Marked	00000000	00000

Junction Blocks for 3 Circuit Switches

For Current, A	Specifications Met		Each
50/63	UL Listed, CE Marked	00000000	000000
80/100	UL Listed, CE Marked	00000000	00000

Enclosed Compact Disconnect Switches

These small disconnect switches are sized to fit in tight spaces but can handle comparable electrical loads to standard sized switches. They cut power and keep it isolated to prevent equipment from starting up during inspection and maintenance. All have a lockout so you can secure them in the off position with a padlock (not included). They’re rated IP65 for protection from washdowns.

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

							Yellow Plastic Housing with Red Actuator
Switching Current @ Voltage	Industry Designation	Electrical Phase (hp)	Ht.	Wd.	Environmental Rating	Specifications Met		Each
Stays Switched (Maintained)
3 Circuits with Lockout
12 A @ 600 V AC, 16 A @ 24 V DC	3PST	Single (1/2 hp @ 120 V AC) Three (1 hp @ 120 V AC) Three (3 hp @ 240 V AC)	4 3/4"	3 13/16"	IP65	UL Recognized Component, CSA Certified, UL 508	00000000	0000000
16 A @ 600 V AC, 20 A @ 24 V DC	3PST	Single (1 hp @ 120 V AC) Three (2 hp @ 120 V AC) Three (5 hp @ 240 V AC)	4 3/4"	3 13/16"	IP65	UL Recognized Component, CSA Certified, UL 508	00000000	000000
20 A @ 600 V AC, 25 A @ 24 V DC	3PST	Single (1 1/2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (5 hp @ 240 V AC)	4 3/4"	3 13/16"	IP65	UL Recognized Component, CSA Certified, UL 508	00000000	000000
25 A @ 600 V AC, 32 A @ 24 V DC	3PST	Single (2 hp @ 120 V AC) Three (3 hp @ 120 V AC) Three (7 1/2 hp @ 240 V AC)	4 3/4"	3 13/16"	IP65	UL Recognized Component, CSA Certified, UL 508	00000000	000000
50 A @ 600 V AC, 50 A @ 24 V DC	3PST	Single (3 hp @ 120 V AC) Three (15 hp @ 240 V AC) Three (7 1/2 hp @ 120 V AC)	5 5/16"	6 11/16"	IP65	UL Recognized Component, CSA Certified, UL 508	00000000	000000
63 A @ 600 V AC, 80 A @ 24 V DC	3PST	Single (5 hp @ 120 V AC) Three (10 hp @ 120 V AC) Three (20 hp @ 240 V AC)	5 5/16"	6 11/16"	IP65	UL Recognized Component, CSA Certified, UL 508	00000000	000000