Cam Switches | McMaster-Carr

	Actuator Style Actuator Style


Lever	Rotary

Push Button

	Maximum Resistance Maximum Resistance

	Wattage Wattage

	For Panel Cutout Diameter For Panel Cutout Diameter

	Environment Environment

	Maximum Voltage Maximum Voltage

	Number of Turns Number of Turns

	Number of Positions Number of Positions

	Environmental Rating Environmental Rating

NEC Class I Divisions 1, 2
Groups C, D

NEC Class II Divisions 1, 2
Groups E, F, G

	Wire Connection Type Wire Connection Type

Solder Turret Terminals

	Number of Circuits Controlled Number of Circuits Controlled

	Switching Voltage Switching Voltage

	Number of Terminals Number of Terminals

	Housing Material Housing Material

Metal

Plastic

Aluminum

	Depth Behind Panel Depth Behind Panel

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

DFARS Specialty Metals
COTS-Exempt

	Specifications Met Specifications Met

	Switch Action Switch Action

Stays Switched (Maintained)

Springs Back (Momentary)

	Switching Current Switching Current

	Actuator Diameter Actuator Diameter

7/8"

1 1/8"

1 1/4"

	Switch Starting Position Switch Starting Position

Off

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

1 Off (Normally Open)

Off or On

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

1 On (Normally Closed)

2 Off (Normally Open)

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

3 Off (Normally Open)

	For Maximum Panel Thickness For Maximum Panel Thickness

	Actuator Color Actuator Color

	Black
	White

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Choosing an Electrical Switch

Metal

Plastic

Rated NEMA 4X and 13, these potentiometers are protected from debris, washdowns, and oil/coolant spraying. Also known as variable output switches or rheostats, they vary electrical flow to control speed, volume, and light intensity.

					Actuator
Wattage @ Voltage	Max. Voltage	For Panel Cutout Dia.	Dp. Behind Panel	No. of Turns	Dia.	Material	Wire Connection Type	Environmental Rating	Specifications Met	Choose a Max. Resistance		Each
Metal
2 W @ 120 V AC/ 2 W @ 24 V DC	500V AC/500V DC	1 3/16" (30 mm)	1 3/4"	1	1 1/4"	Plastic	Screw Terminals	NEMA 4X, NEMA 13, IP66	UL Listed, C-UL Listed, CSA Certified, UL 508	50 ohms, 250 ohms, 500 ohms, 1 kilohms, 2.5 kilohms, 5 kilohms, 10 kilohms, 15 kilohms, 25 kilohms, 100 kilohms, 500 kilohms, 2 megohms, 5 megohms	0000000	0000000
Plastic
2 W @ 120 V AC/ 2 W @ 24 V DC	500V AC/500V DC	7/8" (22 mm)	2 1/4"	1	1 1/8"	Plastic	Screw Terminals	NEMA 4X, NEMA 13, IP65	UL Listed, C-UL Listed, CE Marked	1 kilohms, 2.5 kilohms, 5 kilohms, 10 kilohms	000000	00000

Potentiometers

Vary electrical flow to control speed, volume, and light intensity. The number of turns affects the resolution—the higher the number, the better the control. Also known as variable output switches or rheostats. A knob is required (not included).

Switches with ball bearings have a smoother rotation and a longer service life than other potentiometers.

Switches

						Shaft
	No. of Turns	Wattage	For Panel Cutout Dia.	Dp. Behind Panel	Dia.	Dia.	Lg.	Housing Material	Wire Connection Type	No. of Terminals	Environmental Rating	Choose a Max. Resistance, kilohms		Each
A	10	2 W @ 325 V AC	7/16"	1"	7/8"	1/4"	1/2"	Plastic	Solder Lugs	3	IP65	1, 5, 10	0000000	000000
A	10	2 W @ 447 V AC	7/16"	3/4"	7/8"	1/4"	1/2"	Plastic	Solder Lugs	3	IP40	1, 5, 10	0000000	00000
A	10	2 W @ 450 V AC	7/16"	3/4"	7/8"	1/4"	1/2"	Plastic	Solder Lugs	3	IP40	1, 5, 10	0000000	00000
A	5	1.5 W @ 273 V AC	7/16"	3/4"	7/8"	1/4"	1/2"	Plastic	Solder Lugs	3	IP40	1, 5, 10	0000000	00000
B	1	1 W @ 300 V AC	7/16"	7/16"	7/8"	1/4"	1/2"	Plastic	Solder Lugs	3	IP40	1, 5, 10	0000000	00000
C	10	5 W @ 1,000 V AC	7/16"	1 3/4"	1 13/16"	1/4"	1/2"	Plastic	Solder Lugs	3	IP40	1, 5, 10	0000000	000000

Black Panel Seal	000000000	Each	00000
Gray Panel Seal	00000000	Each	0000

Switches with Ball Bearings

						Shaft
	No. of Turns	Wattage	For Panel Cutout Dia.	Dp. Behind Panel	Dia.	Dia.	Lg.	Housing Material	Wire Connection Type	No. of Terminals	Choose a Max. Resistance, kilohms		Each
D	1	2 W @ 350 V AC	7/16"	5/8"	2"	1/4"	3/8"	Plastic	Solder Lugs	3	1, 5, 10	0000000	0000000

Black Panel Seal	000000000	Each	00000
Gray Panel Seal	00000000	Each	0000

Switches with On/Off Controls

			Switching					Shaft
	No. of Turns	Wattage	Current	Voltage	For Panel Cutout Dia.	Dp. Behind Panel	Dia.	Dia.	Lg.	Housing Material	Wire Connection Type	No. of Terminals	Environmental Rating	Choose a Max. Resistance, kilohms		Each
E	1	0.125 W @ 350 V AC	1.5A	12V DC	3/16"	1/4"	7/16"	1/8"	5/16"	Metal	Solder Lugs	5	IP40	5, 10, 20, 25	000000	000000

Digital Potentiometers

More precise than analog potentiometers, these have a three-digit display that is easy to read. Also known as variable output switches or rheostats, they vary electrical flow to control speed, volume, and light intensity.

Push Button

Potentiometers
		For Panel Cutout									Covers
Wattage	No. of Digits	Ht.	Wd.	Dp. Behind Panel	Housing Material	Wire Connection Type	No. of Terminals	Choose a Max. Resistance, kilohms		Each		Each
2 W @ 500 V AC	3	13/16"	1 7/16"	1 3/8"	Plastic	Solder Lugs	3	1, 5, 10, 20	0000000	000000	0000000	000000

Rotary

Knob

Wattage	No. of Digits	No. of Turns	Dia.	For Panel Cutout Dia.	Dp. Behind Panel	Housing Material	Wire Connection Type	No. of Terminals	Choose a Max. Resistance, kilohms		Each
1.5 W @ 385 V AC	3	10	1 1/4"	1"	5/8"	Plastic	Solder Lugs	3	1, 5, 10	0000000	0000000

Rotary Switches

For 1/4" Panel Cutout Dia.

For 13/32" 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.

Switches for 13/32" panel cutout diameter require a knob.

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.
1	Stays Switched (Maintained)	8	9	1 1/16"	9/16"	13/16"	1/8"	2 A @ 125 V AC, 1 A @ 30 V DC	0000000	000000
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	00000
With Solder Turret Terminals for 1/4" Panel Cutout Dia.
1	Stays Switched (Maintained)	6	7	1"	9/16"	13/16"	1/8"	3 A @ 125 V AC, 2 A @ 30 V DC	0000000	00000
Plastic
With Solder Lugs for 13/32" Panel Cutout Dia.
1	Stays Switched (Maintained)	12	13	13/16"	1"	1 1/2"	1/4"	2.5 A @ 125 V AC, 0.35 A @ 125 V DC	00000000	00000
2	Stays Switched (Maintained)	6	14	13/16"	1"	1 1/2"	1/4"	2.5 A @ 125 V AC, 0.35 A @ 125 V DC	00000000	00000
3	Stays Switched (Maintained)	4	15	13/16"	1"	1 1/2"	1/4"	2.5 A @ 125 V AC, 0.35 A @ 125 V DC	00000000	00000
4	Stays Switched (Maintained)	3	16	13/16"	1"	1 1/2"	1/4"	2.5 A @ 125 V AC, 0.35 A @ 125 V DC	00000000	00000

22 mm Panel-Mount Knob Switches

Set these switches to either spring back (momentary) or stay switched (maintained). They're rated NEMA 4X, 13, and IP66.

Replace contact blocks (sold separately) or add additional contact blocks to control more circuits.

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

With Screw Terminals
No. of Circuits Controlled	Switch Starting Position	Switch Action	No. of Terminals	Industry Designation	Switching Current @ Voltage	Max. Voltage	Dia.	Dp. Behind Panel	For Max. No. of Contact Blocks	Environmental Rating	Specifications Met		Each
2 Position
2	2 Off (Normally Open)	Springs Back (Momentary), Stays Switched (Maintained)	4	DPST-NO	6 A @ 120 V AC, 3 A @ 24 V DC	250V DC 500V AC	13/16"	1 3/4"	4	NEMA 4X, NEMA 13, IP66	UL Listed, CSA Certified, CE Marked, CCC Marked	0000000	000000
2	1 Off (Normally Open) and 1 On (Normally Closed)	Springs Back (Momentary), Stays Switched (Maintained)	4	DPST-1NO/1NC	6 A @ 120 V AC, 3 A @ 24 V DC	250V DC 500V AC	13/16"	1 3/4"	4	NEMA 4X, NEMA 13, IP66	UL Listed, CSA Certified, CE Marked, CCC Marked	0000000	00000
3 Position
3	3 Off (Normally Open)	Springs Back (Momentary), Stays Switched (Maintained)	6	3PST-NO	6 A @ 120 V AC, 3 A @ 24 V DC	250V DC 500V AC	13/16"	1 3/4"	6	NEMA 4X, NEMA 13, IP66	UL Listed, CSA Certified, CE Marked, CCC Marked	0000000	00000
3	2 Off (Normally Open) and 1 On (Normally Closed)	Springs Back (Momentary), Stays Switched (Maintained)	6	3PST-2NO/1NC	6 A @ 120 V AC, 3 A @ 24 V DC	250V DC 500V AC	13/16"	1 3/4"	6	NEMA 4X, NEMA 13, IP66	UL Listed, CSA Certified, CE Marked, CCC Marked	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, UL 508, CSA Certified, CE Marked	0000000	000000
1	1 On (Normally Closed)	2	SPST-NC	IP20	UL Listed, UL 508, CSA Certified, CE Marked	0000000	00000

High-Current Wall-Mount Timer Switches

Control equipment with high currents such as air conditioners, heaters, and ventilating equipment. They automatically turn electrical equipment on or off after a set interval of time.

Switches with override can bypass the automatic shut-off.

With Override
No. of Circuits Controlled	Switch Starting Position	Switching Current @ Voltage	Horsepower @ Switching Voltage	Set Time	For Outlet Box Type	Includes	Wire Connection Type		Each
1	Off or On	28 A @ 120 V AC/240 V AC	1 hp @ 120 V AC, 1 hp @ 240 V AC	1 min.-1 hrs.	2 Device (2 Gang)	Steel Wall Plate	Screw Terminals	0000000	0000000
1	Off or On	28 A @ 120 V AC/240 V AC	1 hp @ 120 V AC, 1 hp @ 240 V AC	15 min.-12 hrs.	2 Device (2 Gang)	Steel Wall Plate	Screw Terminals	0000000	000000
2	Off	28 A @ 120 V AC/240 V AC	1 hp @ 120 V AC, 1 hp @ 240 V AC	1 min.-1 hrs.	2 Device (2 Gang)	Steel Wall Plate	Screw Terminals	0000000	000000
2	Off	28 A @ 120 V AC/240 V AC	1 hp @ 120 V AC, 1 hp @ 240 V AC	15 min.-12 hrs.	2 Device (2 Gang)	Steel Wall Plate	Screw Terminals	0000000	000000
Without Override
1	Off or On	28 A @ 120 V AC/240 V AC	1 hp @ 120 V AC, 1 hp @ 240 V AC	1 min.-1 hrs.	2 Device (2 Gang)	Steel Wall Plate	Screw Terminals	0000000	000000
1	Off or On	28 A @ 120 V AC/240 V AC	1 hp @ 120 V AC, 1 hp @ 240 V AC	15 min.-12 hrs.	2 Device (2 Gang)	Steel Wall Plate	Screw Terminals	0000000	000000
2	Off	28 A @ 120 V AC/240 V AC	1 hp @ 120 V AC, 1 hp @ 240 V AC	1 min.-1 hrs.	2 Device (2 Gang)	Steel Wall Plate	Screw Terminals	0000000	000000
2	Off	28 A @ 120 V AC/240 V AC	1 hp @ 120 V AC, 1 hp @ 240 V AC	15 min.-12 hrs.	2 Device (2 Gang)	Steel Wall Plate	Screw Terminals	0000000	000000

Replacement Knob

0000000

Each

00000

Light Dimmers

Rotary

Rotary with Wall Plate

Adjust the brightness of lights.

Rotary
For Bulb Type	No. of Circuits Controlled	No. of Terminals	Input Voltage	Wattage	Wire Connection Type	Choose a Color		Each
Incandescent, Halogen	1	2	120V AC	600W	Wire Leads	White/Ivory	0000000	000000
Rotary with Wall Plate
Incandescent	1	2	120V AC	1,500W	Wire Leads	Beige, White	0000000	000000
Incandescent	1	2	120V AC	2,000W	Wire Leads	Beige, White	0000000	000000

Wall-Mount Timer Switches

Use these switches in place of standard wall switches to automatically turn electrical equipment on or off after a set interval of time. They’re often used with lights.

Switches with override can bypass the automatic shut-off.

Knob

Without Override
No. of Circuits Controlled	Switch Starting Position	Switching Current @ Voltage	Set Time	For Outlet Box Type	Wire Connection Type	Choose a Knob Color		Each
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	40 sec.-5 min.	1 Device (1 Gang)	Screw Terminals	Ivory, White	0000000	000000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	1 min.-30 min.	1 Device (1 Gang)	Screw Terminals	Ivory, White	0000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	10 min.-60 min.	1 Device (1 Gang)	Screw Terminals	Ivory, White	0000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	1 hrs.-6 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory, White	0000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	2 hrs.-12 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory, White	0000000	00000
With Override
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	1 min.-30 min.	1 Device (1 Gang)	Screw Terminals	Ivory, White	0000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	10 min.-60 min.	1 Device (1 Gang)	Screw Terminals	Ivory, White	0000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	1 hrs.-6 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory, White	0000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	2 hrs.-12 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory, White	0000000	00000

White Replacement Knob	0000000	Each	00000
Ivory Replacement Knob	0000000	Each	0000

Knob and Silver Plastic Wall Plate

Knob and Wall Plate

Without Override
No. of Circuits Controlled	Switch Starting Position	Switching Current @ Voltage	Set Time	For Outlet Box Type	Wire Connection Type	Knob Color		Each
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	1 min.-5 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	000000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	4 min.-30 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	10 min.-60 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	1 hrs.-6 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	2 hrs.-12 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory	0000000	00000
With Override
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	1 min.-5 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	4 min.-30 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	10 min.-60 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	1 hrs.-6 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	Off	20 A @ 125 V AC, 10 A @ 250 V AC	2 hrs.-12 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000

Replacement Knob

0000000

Each

00000

Timer Switches

Automatically turn electrical equipment off after a set interval of time. Use the three-prong outlet to plug a device directly into the switch.

Switching Current @ Voltage	Set Time, min.	No. of Outlets	Cord Lg., ft.	Ht.	Wd.	Dp.		Each
10 A @ 125 V AC	0-30	1	6	3 1/4"	2 3/4"	2 3/4"	0000000	0000000
10 A @ 125 V AC	0-60	1	6	3 1/4"	2 3/4"	2 3/4"	0000000	000000

Flow Transmitters for Water

Send flow-rate readings to data recorders, loggers, and displays.

Transmitters with a 316 stainless steel body are more corrosion resistant than transmitters with a brass or polypropylene body.

								Output
Pipe Connections	End-to-End Lg.	Flow Range, gpm	Accuracy	Max. Pressure	Temp. Range, °F	Seal Material	Mounting Orientation	Signal Connection	Signal, mA	Current	Wire Lead Lg.		Each
Polypropylene Plastic Body
Gallons per Minute
1/4 NPT Female	3 1/16"	0.1 to 5	±7%	100 psi @ 70° F	33° to 180°	Fluoroelastomer Rubber	Horizontal, Vertical	Wire Leads	70	0.008 A @ 24 V DC	24"	0000000	0000000
1/2 NPT Female	3 1/16"	1.5 to 20	±15%	100 psi @ 70° F	33° to 180°	Fluoroelastomer Rubber	Horizontal, Vertical	Wire Leads	70	0.008 A @ 24 V DC	24"	0000000	000000
Brass Body
Gallons per Minute
1/4 NPT Female	3"	0.1 to 5	±7%	200 psi @ 70° F	33° to 212°	Fluoroelastomer Rubber	Horizontal, Vertical	Wire Leads	70	0.008 A @ 24 V DC	24"	0000000	000000
1/2 NPT Female	3"	1.5 to 20	±15%	200 psi @ 70° F	33° to 212°	Fluoroelastomer Rubber	Horizontal, Vertical	Wire Leads	70	0.008 A @ 24 V DC	24"	0000000	000000
3/4 NPT Female	3 15/16"	5 to 30	±15%	200 psi @ 70° F	33° to 212°	Fluoroelastomer Rubber	Horizontal, Vertical	Wire Leads	70	0.008 A @ 24 V DC	24"	0000000	000000
1 NPT Female	3 15/16"	8 to 60	±15%	200 psi @ 70° F	33° to 212°	Fluoroelastomer Rubber	Horizontal, Vertical	Wire Leads	70	0.008 A @ 24 V DC	24"	0000000	000000
316 Stainless Steel Body
Gallons per Minute
1/2 NPT Female	3"	1.5 to 20	±15%	200 psi @ 70° F	33° to 212°	Fluoroelastomer Rubber	Horizontal, Vertical	Wire Leads	70	0.008 A @ 24 V DC	24"	0000000	000000
3/4 NPT Female	3 15/16"	5 to 30	±15%	200 psi @ 70° F	33° to 212°	Fluoroelastomer Rubber	Horizontal, Vertical	Wire Leads	70	0.008 A @ 24 V DC	24"	0000000	000000
1 NPT Female	3 15/16"	8 to 60	±15%	200 psi @ 70° F	33° to 212°	Fluoroelastomer Rubber	Horizontal, Vertical	Wire Leads	70	0.008 A @ 24 V DC	24"	0000000	000000

Level Switches for Dry Materials

When dry material rises to the level of the rotating paddle, these switches actuate. All are rated NEMA 4X and IP66 for protection from corrosion and washdowns.

Switches with auxiliary SPDT relay activate an alarm (not included).

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

Level Switches

Horizontal Side Mount

Vertical Top Mount

							Paddle
Current	Max. Pressure	Temp. Range, °F	Insertion Dp.	Switch Starting Position	Industry Designation	Paddle Speed, rpm	Lg.	Wd.	Features	Environmental Rating	Specifications Met		Each
Horizontal Side Mount—0-30 lbs. per cu. ft. Capacity
8 A @ 120 V AC	30 psi @ 70° F	-40° to 110°	6 5/8"	1 Off (Normally Open) or 1 On (Normally Closed)	SPDT	1	7"	2"	Auxiliary SPDT Relay LED Alarm Status Indicator LED Power Indicator	IP66, NEMA 4X, NEC Class I Divisions 1, 2 Groups C, D, NEC Class II Divisions 1, 2 Groups E, F, G	UL Listed C-UL Listed	00000000	0000000
20 A @ 120 V AC	30 psi @ 70° F	-40° to 110°	6 5/8"	1 Off (Normally Open) or 1 On (Normally Closed)	SPDT	1	7"	2"	__	IP66, NEMA 4X, NEC Class I Divisions 1, 2 Groups C, D, NEC Class II Divisions 1, 2 Groups E, F, G	UL Listed C-UL Listed	00000000	000000
Vertical Top Mount—30-70 lbs. per cu. ft. Capacity
8 A @ 120 V AC	30 psi @ 70° F	-40° to 110°	12"	1 Off (Normally Open) or 1 On (Normally Closed)	SPDT	1	5"	1 1/2"	Auxiliary SPDT Relay LED Alarm Status Indicator LED Power Indicator	IP66, NEMA 4X, NEC Class I Divisions 1, 2 Groups C, D, NEC Class II Divisions 1, 2 Groups E, F, G	UL Listed C-UL Listed	00000000	000000
20 A @ 120 V AC	30 psi @ 70° F	-40° to 110°	12"	1 Off (Normally Open) or 1 On (Normally Closed)	SPDT	1	5"	1 1/2"	__	IP66, NEMA 4X, NEC Class I Divisions 1, 2 Groups C, D, NEC Class II Divisions 1, 2 Groups E, F, G	UL Listed C-UL Listed	00000000	000000

Replacement Paddles for Horizontal Side Mount Level Switches

Paddle Material		Each
316 Stainless Steel	00000000	000000

Replacement Motors for 20 A @ 120 V AC Level Switches

Voltage	Includes		Each
120V AC	Bracket, Washer	00000000	0000000

Flow Switches with Indicator for Water

For flow monitoring at a glance, these switches have a plastic window with a rotor indicator that spins when flow is present. They activate or deactivate equipment when the flow rate reaches your set point. All have an adjustment screw for altering the set point to suit your application. Switches are single pole, double throw (SPDT) and can be installed to turn one circuit from "off" to "on" (normally open) or from "on" to "off" (normally closed).

Switches with a polypropylene body are lighter than sights with a metal body.

Switches with a 316 stainless steel body are more corrosion resistant than switches with a brass body.

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

Polypropylene Plastic Body
Pipe Size	Thread Type	Gender	Set Point, gpm	Max. Pressure	Temp. Range, °F	Voltage	Current	End-to-End Lg.		Each
1/4	NPT	Female	0.1 to 5	100 psi @ 70° F	33° to 180°	120V AC	0.3 A @ 120 V AC	3 1/16"	0000000	0000000
1/2	NPT	Female	1.5 to 20	100 psi @ 70° F	33° to 180°	120V AC	0.3 A @ 120 V AC	3 1/16"	0000000	000000
Brass Body
1/4	NPT	Female	0.1 to 5	200 psi @ 70° F	33° to 212°	120V AC	0.3 A @ 120 V AC	3"	0000000	000000
1/2	NPT	Female	1.5 to 20	200 psi @ 70° F	33° to 212°	120V AC	0.3 A @ 120 V AC	3"	0000000	000000
3/4	NPT	Female	5 to 30	200 psi @ 70° F	33° to 212°	120V AC	0.3 A @ 120 V AC	3 15/16"	0000000	000000
1	NPT	Female	8 to 60	200 psi @ 70° F	33° to 212°	120V AC	0.3 A @ 120 V AC	3 15/16"	0000000	000000
316 Stainless Steel Body
1/2	NPT	Female	1.5 to 20	200 psi @ 70° F	33° to 212°	120V AC	0.3 A @ 120 V AC	3"	0000000	000000
3/4	NPT	Female	5 to 30	200 psi @ 70° F	33° to 212°	120V AC	0.3 A @ 120 V AC	3 15/16"	0000000	000000
1	NPT	Female	8 to 60	200 psi @ 70° F	33° to 212°	120V AC	0.3 A @ 120 V AC	3 15/16"	0000000	000000

Indicating Knobs

Control devices with round or D-shaped shafts and view settings at a glance with a pointer.

Knobs for round shafts include a set screw to secure them in place.

Aluminum knobs have mild corrosion resistance, are lightweight, and are nonmagnetic.

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

Head		Hole
Dia.	Ht.	Dia.	Dp.	Set Screw Included		Each
Style 8—Single Arm Grip
Black Anodized Aluminum—For Round Shafts
1/2"	1"	1/8"	1/2"	Yes	000000	000000

Turn-Counting Indicating Knobs

For monitoring the number of shaft turns on instrumentation, these knobs have easy-to-read scales or digits for quick and accurate readings. Use them on devices with round shafts. To secure these knobs in place, tighten the set screw.

Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents.

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

Head			Hole
Dia.	Ht.	Max. Knob Turns	Dia.	Dp.	Set Screw Included	Temperature Range, °F		Each
Style 5—Ribbed Grip
Black Plastic—For Round Shafts
7/8"	7/8"	15	1/8"	13/16"	Yes	Not Rated	000000	000000
7/8"	15/16"	15	1/4"	13/16"	Yes	Not Rated	0000000	00000
1 13/16"	1"	20	1/4"	15/16"	Yes	Not Rated	0000000	00000

Speaker Volume Controls

Control with Volume Knob

Control with Key Lock

Wire one of these controls between your speakers and amplifier to adjust the volume.

The control with a key lock prevents tampering.

Power, W	No. of Sound Levels	For PA System Type	Ht.	Wd.	Dp.	Mounting Plate Material	Fasteners Included	Features	Specifications Met		Each
25	10	25V, 70V, 100V	4 1/2"	2 3/4"	2 3/4"	Stainless Steel	Yes	Volume Knob	C-ETL Listed, ETL Listed	00000000	000000
50	10	25V, 70V, 100V	4 1/2"	2 3/4"	2 3/4"	Stainless Steel	Yes	Volume Knob	C-ETL Listed, ETL Listed	00000000	00000
100	10	25V, 70V, 100V	4 1/2"	2 3/4"	2"	Stainless Steel	Yes	Key Lock	__	00000000	00000
100	10	25V, 70V, 100V	4 1/2"	2 3/4"	3 1/8"	Stainless Steel	Yes	Volume Knob	C-ETL Listed, ETL Listed	00000000	00000

Speed-Monitoring Switches

Set to a specific speed to detect unwanted machinery slowdown that can cause damage and downtime. Applications include drive trains, power-driven components, and conveyors. Switches are UL listed for Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G. They have an explosion-proof housing and are also rated NEMA 4X for washdown and corrosion protection.

	Switching		Input			Conduit			Mounting Slot
Activation Point Range, rpm	Current, A	Voltage	Voltage	Frequency, Hz	No. of Terminals	Trade Size	Thread Type	Gender	Lg.	Wd.	No. of	Mounting Fasteners Included	Environmental Rating		Each
1 Off (Normally Open), 1 On (Normally Closed) Starting Switch Position
SPDT
5-100	5	120V AC	120V AC	60	5	1	NPT	Female	1 1/4"	0.32"	2	Yes	NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 4X	0000000	0000000

Choosing an Electrical Switch

Harsh Environment Potentiometers

Potentiometers

Digital Potentiometers

Rotary Switches

22 mm Panel-Mount Knob Switches

High-Current Wall-Mount Timer Switches

Light Dimmers

Wall-Mount Timer Switches

Timer Switches

Flow Transmitters for Water

Level Switches for Dry Materials

Flow Switches with Indicator for Water

Indicating Knobs

Turn-Counting Indicating Knobs

Speaker Volume Controls

Speed-Monitoring Switches