Pool Timers | McMaster-Carr

	Switching Voltage Switching Voltage

120V AC

208V AC

240V AC

277V AC

	Input Voltage Input Voltage

	Timing Cycle Timing Cycle

24 Hour

7 Day

	Switching Current Switching Current

20A

30A

40A

	Minimum Set Time Minimum Set Time

	Number of Circuits Controlled Number of Circuits Controlled

	Maximum On/Off Cycles Maximum On/Off Cycles

	Timing Adjustment Style Timing Adjustment Style


Trippers	Push Button

	Number of Trippers Number of Trippers

	Environment Environment

Corrosive

Damp

Outdoor

	Industry Designation Industry Designation

	Housing Material Housing Material

Steel

Plastic

	Environmental Rating Environmental Rating

NEMA 1

NEMA 3R

	Width Width

	Depth Depth

3 7/16"

3 5/8"

	Knockout Trade Size Knockout Trade Size

1/2

3/4

	Mounting Hole Diameter Mounting Hole Diameter

	Height Height

	Specifications Met Specifications Met

CSA

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

DFARS Specialty Metals
COTS-Exempt

	Tripper Type Tripper Type

Captive

Removable

	For Maximum Padlock Shackle Diameter For Maximum Padlock Shackle Diameter

29 Products

High-Current Time and Day Activated Switches

Control equipment with high currents such as landscape lighting, pumps, and heaters. Program these switches to turn a device on and off at a set time and day. Position trippers around the clock dial to set on and off times.

24-hour switches repeat the same program daily.

Seven-day switches can perform a different program each day of the week.

Switches with a day skipper can be programmed to skip operation for one to six days.

Additional trippers (sold separately) are sold in pairs that include one “on” tripper and one “off” tripper.

Switches															Additional Trippers
No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage	Maximum On/Off Cycles	Minimum Set Time	Tripper Type	No. of Trippers	Industry Designation	Ht.	Wd.	Dp.	Wire Connection Type	Environment		Each	Pkg. Qty.		Pkg.
24-Hour Timing Cycle
1	20 A @ 120 V AC, 208 V AC, 240 V AC, 277 V AC	120V AC/208V AC/240V AC/277V AC	48 per Day	15 min.	Captive	96	SPDT	7 3/4"	5"	3"	Screw Terminals	Indoor	0000000	0000000	__	000000	00
1	40 A @ 240 V AC	120V AC	12 per Day	1 hrs.	Removable	2	SPST	7 3/4"	5"	3"	Screw Terminals	Indoor	0000000	00000	1	0000000	00000
2	40 A @ 240 V AC	120V AC	12 per Day	1 hrs.	Removable	2	DPST	7 3/4"	5"	3"	Screw Terminals	Indoor	0000000	00000	1	0000000	0000
2	40 A @ 240 V AC	208V AC/240V AC/277V AC	12 per Day	1 hrs.	Removable	2	DPST	7 3/4"	5"	3"	Screw Terminals	Indoor	0000000	00000	1	0000000	0000
24-Hour Timing Cycle with Day Skipper and Three Skip Screws
1	40 A @ 240 V AC	120V AC	10 per Day	1 hrs.	Removable	2	SPST	7 3/4"	5"	3"	Screw Terminals	Indoor	0000000	000000	1	0000000	0000
2	40 A @ 240 V AC	120V AC	10 per Day	1 hrs.	Removable	2	DPST	7 3/4"	5"	3"	Screw Terminals	Indoor	0000000	000000	1	0000000	0000
2	40 A @ 240 V AC	208V AC/240V AC/277V AC	10 per Day	1 hrs.	Removable	2	DPST	7 3/4"	5"	3"	Screw Terminals	Indoor	0000000	000000	1	0000000	0000
7-Day Timing Cycle
1	20 A @ 240 V AC	120V AC	12 per Day	2 hrs.	Captive	84	SPDT	7 3/4"	5"	3"	Screw Terminals	Indoor	00000000	000000	__	000000	00
4	40 A @ 240 V AC	120V AC	3 per Day	3.5 hrs.	Removable	4	4PST-NO	12 1/2"	8 1/4"	4"	Screw Terminals	Indoor	00000000	000000	7	00000000	00000

Additional Day-Skip Screws (Pkg. of 3)

0000000

Pkg.

00000

Outdoor High-Current Time and Day Activated Switches

Rated NEMA 3R, these rain-tight switches protect against falling liquids and light splashing. They control equipment with high currents, such as landscape lighting, pumps, and heaters. Program them to turn a device on and off at a set time and day. Position trippers around the clock dial to set on and off times.

24-hour switches repeat the same program daily.

Seven-day switches can perform a different program each day of the week.

Switches with a day skipper can be programmed to skip operation for one to six days.

Additional trippers (sold separately) are sold in pairs that include one “on” tripper and one “off” tripper.

Switches															Additional Trippers
No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage	Maximum On/Off Cycles	Minimum Set Time	Tripper Type	No. of Trippers	Housing Material	Industry Designation	Ht.	Wd.	Dp.	Wire Connection Type		Each	Pkg. Qty.		Pkg.
24-Hour Timing Cycle
1	40 A @ 240 V AC	120V AC	12 per Day	1 hrs.	Removable	2	Steel	SPST	9 3/8"	5 1/2"	3 5/8"	Screw Terminals	0000000	0000000	1	0000000	00000
2	40 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	48 per Day	15 min.	Captive	96	Polycarbonate Plastic	DPDT	8 7/8"	6 5/8"	3"	Screw Terminals	0000000	00000	__	000000	00
2	40 A @ 240 V AC	120V AC	12 per Day	1 hrs.	Removable	2	Steel	DPST	9 3/8"	5 1/2"	3 5/8"	Screw Terminals	0000000	000000	1	0000000	0000
2	40 A @ 240 V AC	208V AC/240V AC/277V AC	12 per Day	1 hrs.	Removable	2	Steel	DPST	9 3/8"	5 1/2"	3 5/8"	Screw Terminals	0000000	000000	1	0000000	0000
24-Hour Timing Cycle with Day Skipper and Three Skip Screws
2	40 A @ 240 V AC	120V AC	10 per Day	1 hrs.	Removable	2	Steel	DPST	9 3/8"	5 1/2"	3 5/8"	Screw Terminals	0000000	000000	1	0000000	0000
2	40 A @ 240 V AC	208V AC/240V AC/277V AC	10 per Day	1 hrs.	Removable	2	Steel	DPST	9 3/8"	5 1/2"	3 5/8"	Screw Terminals	0000000	000000	1	0000000	0000
7-Day Timing Cycle
2	40 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	6 per Day	2 hrs.	Captive	96	Polycarbonate Plastic	DPDT	8 7/8"	6 5/8"	3"	Screw Terminals	00000000	000000	__	000000	00
4	40 A @ 240 V AC	120V AC	3 per Day	3.5 hrs.	Removable	14	Steel	4PST	12 1/2"	8 1/4"	4"	Screw Terminals	00000000	000000	7	00000000	00000

Additional Day-Skip Screws (Pkg. of 3)

0000000

Pkg.

00000

Outdoor Set-to-the-Minute High-Current Time and Day Activated Switches

Rated NEMA 3R, these rain-tight switches protect against falling liquids and light splashing. More precise than other time and day switches, they program on/off times for equipment down to the exact minute. They control equipment with high currents, such as landscape lighting, pumps, and heaters. A backup battery maintains the program during a power outage.

24-hour switches repeat the same program daily.

Seven-day switches can perform a different program each day of the week.

Switches with astronomical timing can be set to turn lights on and off based on sunrise and sunset.

Switches with a day skipper can be programmed to skip operation for one to six days.

											Mounting
No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage	Maximum On/Off Cycles	Minimum Set Time	Timing Adjustment Style	Housing Material	Industry Designation	Ht.	Wd.	Dp.	Fasteners Included	Hole Dia.	Wire Connection Type		Each
24-Hour Timing Cycle
With Battery Backup, Lockout
1	30 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	20 per Day	1 min.	Push Button	Polycarbonate Plastic	SPST	8 1/4"	5"	3"	No	0.16"	Screw Terminals	0000000	0000000
2	30 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	20 per Day	1 min.	Push Button	Polycarbonate Plastic	DPST	8 1/4"	5"	3"	No	0.16"	Screw Terminals	0000000	000000
7-Day Timing Cycle
With Battery Backup, Lockout, Day Skipper
2	30 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	20 per Day	1 min.	Push Button	Polycarbonate Plastic	DPST	8 1/4"	5"	3"	No	0.16"	Screw Terminals	0000000	000000
With Battery Backup, Lockout, Day Skipper, Astronomical Timing
1	30 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	20 per Day	1 min.	Push Button	Polycarbonate Plastic	SPDT	8 1/4"	5"	3"	No	0.16"	Screw Terminals	0000000	000000

Set-to-the-Minute High-Current Time and Day Activated Switches

For precise control of high-current equipment such as landscape lighting, pumps, and heaters, these switches schedule on/off times to the exact minute. The seven-day timing cycle can perform a different program each day of the week. All have a day skipper that can suspend operation for one to six days. A backup battery maintains the program during a power outage.

Two-circuit switches can apply a different program to each circuit.

										Mounting
No. of Circuits Controlled	Switching Current @ Voltage	Input Voltage	Maximum On/Off Cycles	Minimum Set Time	Timing Adjustment Style	Industry Designation	Ht.	Wd.	Dp.	Fasteners Included	Hole Dia.	Knockout Trade Size	Wire Connection Type	Environment	Specifications Met		Each
24 Hour Timing Cycle
With Capacitor Backup, Lockout, Day Skipper
1	30 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	48 per Day	1 min.	Push Button	SPST	7 7/8"	5 1/8"	3 7/16"	No	3/16"	1/2, 3/4	Screw Terminals	Indoor	UL Listed, CSA Certified	0000000	0000000
2	30 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	48 per Day	1 min.	Push Button	SPST, DPST	7 7/8"	5 1/8"	3 7/16"	No	3/16"	1/2, 3/4	Screw Terminals	Indoor	UL Listed, CSA Certified	0000000	000000
7-Day Timing Cycle
With Capacitor Backup, Lockout, Day Skipper
1	30 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	48 per Day	1 min.	Push Button	SPST	7 7/8"	5 1/8"	3 7/16"	No	3/16"	1/2, 3/4	Screw Terminals	Indoor	UL Listed, CSA Certified	0000000	000000
With Battery Backup, Lockout, Day Skipper
2	30 A @ 240 V AC	120V AC/208V AC/240V AC/277V AC	28 per Day	1 min.	Push Button	SPST, DPST	7 3/4"	5"	3"	No	0.16"	1/2, 3/4	Screw Terminals	Indoor	UL Listed, CSA Certified	0000000	000000