Countdown Switches | McMaster-Carr

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Switching Voltage

Set Time

Timing Adjustment Style

Switching Current

Input Voltage

Number of Circuits Controlled

Wire Connection

Terminal

Wire Leads

With Override

Yes

Switch Starting Position

Color

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

REACH

RoHS

Compliant with Exemptions

Not Compliant

Number of Terminals

Knob Color

Black

Ivory

White

Outlet Box Designation

Certification

C-UL Recognized Component

UL Listed

UL Recognized Component

Signal Type

Width

Depth

Horsepower @ Switching Voltage

Height

Diameter

Reset Type

Panel Cutout Diameter

57 Products

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.

Set switches with beep and light signals to alert when the timer is almost done; the signals can also be turned off.

Switches with set time recall retain the last setting; hold the button down to restart the timer with that setting.

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	1 Off (Normally Open)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	20 A @ 125 V AC, 10 A @ 250 V AC	1 min.-5 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	000000
1	1 Off (Normally Open)	20 A @ 125 V AC, 10 A @ 250 V AC	4 min.-30 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	1 Off (Normally Open)	20 A @ 125 V AC, 10 A @ 250 V AC	10 min.-60 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	1 Off (Normally Open)	20 A @ 125 V AC, 10 A @ 250 V AC	1 hrs.-6 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	1 Off (Normally Open)	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	1 Off (Normally Open)	20 A @ 125 V AC, 10 A @ 250 V AC	1 min.-5 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	1 Off (Normally Open)	20 A @ 125 V AC, 10 A @ 250 V AC	4 min.-30 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	1 Off (Normally Open)	20 A @ 125 V AC, 10 A @ 250 V AC	10 min.-60 min.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	1 Off (Normally Open)	20 A @ 125 V AC, 10 A @ 250 V AC	1 hrs.-6 hrs.	1 Device (1 Gang)	Screw Terminals	Ivory	000000	00000
1	1 Off (Normally Open)	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

Push Button and White Wall Plates

Push Button

With Override
No. of Circuits Controlled	Switch Starting Position	Switching Current @ Voltage	Set Time	For Outlet Box Type	Wire Connection Type	Color	CSA File Number		Each
1	1 Off (Normally Open)	15 A @ 120 V AC	2 hrs., 4 hrs., 8 hrs., 12 hrs.	1 Device (1 Gang)	Wire Leads	White	__	00000000	000000
1	1 Off (Normally Open)	15 A @ 120 V AC	5 min., 10 min., 15 min., 30 min.	1 Device (1 Gang)	Wire Leads	White	003413_0_000	00000000	00000

Push Button with Countdown LCD, Set Time Recall, and Beep and Light Signals

Push-Button with
Countdown LCD
and Set Time Recall

With Override
No. of Circuits Controlled	Switch Starting Position	Switching Current @ Voltage	Horsepower @ Switching Voltage	Set Time	For Outlet Box Type	Wire Connection Type	Choose a Color		Each
1	1 Off (Normally Open)	41 mA @ 24 V AC, 12 mA @ 24 V DC	__	5 min.-12 hrs.	1 Device (1 Gang)	Screw Terminals	Almond, Black, Gray, Ivory, White	000000	000000
1	1 Off (Normally Open)	6.6 A @ 120 V AC, 4.3 A @ 277 V AC	1/6 hp @ 125 V AC	5 min.-12 hrs.	1 Device (1 Gang)	Screw Terminals	Almond, Black, Gray, Ivory, White	000000	00000

Time-Delay Wall-Mount Timer Switches

Control two devices and delay the shut off of one device by up to one hour. These switches are often used with lights and fans for ventilation. All have an override that bypasses the automatic shut-off.

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

Color	No. of Circuits Controlled	Switch Starting Position	Switching Current @ Voltage	Horsepower @ Switching Voltage	Set Time, min.	For Outlet Box Type	Wire Connection Type		Each
Ivory	2	1 Off (Normally Open)	4.1 A @ 120 V AC	1/3 hp @ 120 V AC	1-60	1 Device (1 Gang)	Wire Leads	0000000	000000
White	2	1 Off (Normally Open)	4.1 A @ 120 V AC	1/3 hp @ 120 V AC	1-60	1 Device (1 Gang)	Wire Leads	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	1 Off (Normally Open) or 1 On (Normally Closed)	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	1 Off (Normally Open) or 1 On (Normally Closed)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	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	1 Off (Normally Open) or 1 On (Normally Closed)	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	1 Off (Normally Open) or 1 On (Normally Closed)	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	1 Off (Normally Open)	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	1 Off (Normally Open)	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

Power-Saving Panel-Mount Timer Switches

Push and release the button to activate—no electricity required.

No. of Circuits Controlled	Switch Starting Position	Switching Current @ Voltage	Set Time	Ht.	Wd.	Dp.	Wire Connection Type	No. of Terminals	Dp. Behind Panel	For Panel Cutout Dia.	For Max. Panel Thick.		Each
1	1 Off (Normally Open) or 1 On (Normally Closed)	10 A @ 120 V AC/240 V AC	2 sec.-1 min.	1 7/16"	1"	1 1/2"	Tab Terminals	4	1 1/16"	15/32"	3/16"	0000000	0000000

Panel-Mount Timer Switches

15 Amp

20 Amp

Install these switches in a panel cutout to automatically turn electrical equipment on or off after a set interval.

Switches with set time recall retain the last setting; push the button to start the timer over at the same interval, eliminating the need to reset the dial with every use.

											Wire Leads
No. of Circuits Controlled	Switch Starting Position	Switching Current @ Voltage	Set Time	Input Voltage	Dia.	Dp.	For Panel Cutout Dia.	For Max. Panel Thick.	Wire Connection Type	No. of Terminals	No. of	Lg.		Each
Dial Reset
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	1 min.-30 min.	120V AC	3 1/16"	1 13/16"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	0000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	1 hrs.-12 hrs.	120V AC	3 1/16"	1 13/16"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	1 hrs.-60 hrs.	120V AC	3 1/16"	1 13/16"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	2 hrs.-24 hrs.	120V AC	3 1/16"	1 13/16"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	5 min.-60 min.	120V AC	3 1/16"	1 13/16"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	20 A @ 120 V AC/240 V AC	1 min.-15 min.	120V AC/240V AC	2 9/16"	1 9/16"	13/32"	1/8"	Screw Terminals	3	__	__	0000000	000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	20 A @ 120 V AC/240 V AC	1 min.-30 min.	120V AC/240V AC	2 3/4"	1 5/8"	2 19/32"	1/4"	Screw Terminals	3	__	__	0000000	000000
Push Reset with Set Time Recall
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	1 min.-30 min.	120V AC	3 1/16"	2 1/8"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	1 hrs.-12 hrs.	120V AC	3 1/16"	2 1/8"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	1 hrs.-60 hrs.	120V AC	3 1/16"	2 1/8"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	2 hrs.-24 hrs.	120V AC	3 1/16"	2 1/8"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	000000
1	1 Off (Normally Open) or 1 On (Normally Closed)	15 A @ 125 V AC/250 V AC	5 min.-60 min.	120V AC	3 1/16"	2 1/8"	3/8"	1/8"	Quick-Disconnect Terminals/Wire Leads	2	2	8"	0000000	000000

Replacement Knob for 20A Switches

0000000

Each

00000

High-Visibility Timer Switches

With White Face

With Black Face

The large face makes these switches easy to read from a distance. They automatically turn electrical equipment on or off after a set interval of time. All have two three-prong outlets to control up to two devices at once; plug each device directly into the switch. A rocker switch controls the outlet settings. The buzzer sounds when the timer stops.

Switches with a white face can be set so that both outlets turn off when the timer stops, or so that the top outlet turns off and the bottom outlet turns on.

Switches with a black face can be set so that both outlets turn on when the timer stops, or so that the top outlet remains off and the bottom outlet remains on.

				Outlet								Mounting
Switching Current @ Voltage	Horsepower @ Switching Voltage	Set Time	Face Dia.	No. of	Type	Switch Style	Cord Lg., ft.	Plug Type	Ht.	Wd.	Dp.	Fasteners Included	No. of Holes	Hole Dia.		Each
With White Face
5 A @ 120 V AC	1/3 hp @ 120 V AC	0.25 sec.-15 min.	6 1/2"	2	Three Prong	Rocker	6	Three Prong	7 1/2"	7 1/2"	2 1/2"	No	2	3/8"	0000000	0000000
5 A @ 120 V AC	1/3 hp @ 120 V AC	1 sec.-60 min.	6 1/2"	2	Three Prong	Rocker	6	Three Prong	7 1/2"	7 1/2"	2 1/2"	No	2	3/8"	0000000	000000
5 A @ 120 V AC	1/3 hp @ 120 V AC	1 min.-60 hrs.	6 1/2"	2	Three Prong	Rocker	6	Three Prong	7 1/2"	7 1/2"	2 1/2"	No	2	3/8"	0000000	000000
5 A @ 120 V AC	1/3 hp @ 120 V AC	15 sec.-15 hrs.	6 1/2"	2	Three Prong	Rocker	6	Three Prong	7 1/2"	7 1/2"	2 1/2"	No	2	3/8"	0000000	000000
With Black Face and Glow-in the-Dark Dial and Hands
5 A @ 120 V AC	1/3 hp @ 120 V AC	1 sec.-60 min.	6 1/2"	2	Three Prong	Rocker	6	Three Prong	7 1/2"	7 1/2"	2 1/2"	No	2	3/8"	0000000	000000

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