
Intermatic T101P3 24-Hour 120V Mechanical Time Switch, SPST, Type 3R Plastic Enclosure
Quick overview
- On and off control for 120V gear Switches 120 volt equipment such as a pool pump on a fixed daily schedule.
- 24 hour dial The dial turns once a day and holds the trippers that set the schedule.
- Up to 12 operations a day The dial accepts up to 12 on and off operations in each 24 hour cycle.
- SPST switching Single pole, single throw, the standard arrangement for a single 120 volt circuit.
- Type 3R plastic enclosure included Comes in a NEMA 3R rated plastic box, rated for outdoor equipment pads.
- Mechanical, not digital Nothing to reprogram after a power cut, the dial simply picks up where the clock left it.
Frequently bought together

T101P3 24-Hour 120V Mechanical Time Switch, SPST, Type 3R Plastic Enclosure
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Product details
The Intermatic T101P3 is a 24-hour mechanical time switch supplied in a NEMA Type 3R plastic enclosure. It gives on and off control of 120 volt equipment, most often a pool pump, on a fixed daily schedule.
How it works
The dial makes one full turn every 24 hours. Trippers clamped to the dial catch the switch as they come around and throw it, so the schedule is set physically rather than programmed. The dial accepts up to 12 on and off operations in a single day, which covers everything from one long filtration run to several short cycles. Switching is SPST, a single pole making and breaking one leg of the circuit.
The enclosure
This version comes in the Type 3R plastic box, rated for outdoor use on an equipment pad. Intermatic builds the same mechanism into several packages: bare mechanism only, Type 3R metal enclosure, and a version with pool heater protection, each with its own part number. Confirm which package you need before ordering, since the mechanism inside is the part that is shared.
A mechanical clock has one practical advantage over a digital controller: after a power outage there is nothing to reprogram, the dial simply keeps its trippers where they were and picks the schedule back up.
| Brand | Intermatic |
|---|---|
| Manufacturer part number | T101P3 |
| UPC | 078275026285 |
| Type | Mechanical time switch |
| Dial | 24 hour |
| Voltage | 120V |
| Switch | SPST |
| Operations | Up to 12 ON and OFF operations each day |
| Enclosure | NEMA Type 3R plastic, included |
| Shipping weight | 2.2 lb |
| Ships | Parcel |
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