Intermatic - T104 - 24 Hour Mechanical Time Switch
Intermatic T104 24-Hour Mechanical Time Switch – 208–277 VAC

The Intermatic T104 is a heavy-duty 24-hour mechanical time switch designed for reliable automatic control of compatible lighting, pumps, motors, appliances and electric water heaters.
This model operates on 208–277 VAC, 60 Hz and uses a DPST (Double Pole, Single Throw) switching configuration. It features durable all-metal construction, a large wiring compartment, patented wire terminals, a surge-protected clock motor and a clearly marked manual override.
With up to 12 ON/OFF settings and a minimum switching duration of 1 hour, the T104 is well suited to repeated daily control of compatible indoor equipment.
Features
- 24-hour mechanical time switch
- 208–277 VAC, 60 Hz operating voltage
- DPST – Double Pole, Single Throw
- All-metal construction
- Large wiring compartment
- Patented wire terminals
- Surge-protected clock motor
- Clearly marked manual override
- Up to 12 ON/OFF settings
- 1-hour minimum switching duration
- Indoor Type 1 enclosure
Electrical Ratings
| Resistive | 40 A, 120–480 VAC |
| Inductive / Tungsten | 40 A, 120–277 VAC |
| Electronic Ballast / LED | 16 A, 277 VAC |
| Pilot Duty | 1000 VA, 120–277 VAC |
| Motor Load | 2 HP, 24 FLA, 120 VAC |
| Motor Load | 5 HP, 28 FLA, 240 VAC |
| Operating Voltage | 208–277 VAC, 60 Hz |
| Clock Motor | 208–277 VAC, 60 Hz |
| Enclosure | Type 1 – Indoor |
Great For
- Lighting
- Commercial lighting
- Compatible LED lighting
- Compatible HID lighting
- Appliances
- Electric water heaters
- Electric motors
- Pumps
Product Details
| Brand | Intermatic |
| Model | T104 |
| Timer Type | 24-hour mechanical time switch |
| Switch Type | DPST |
| Installation | Indoor |
Important
The 208–277 VAC rating refers to the operating voltage of the timer and clock motor. Individual switched-load ratings vary by load type, so always confirm the appropriate rating for your application before installation.
This is a line-voltage electrical control. Installation should follow applicable electrical codes and the manufacturer’s instructions.
Need replacement or additional trippers? We also sell the 156T1978A Time Switch Tripper Kit!
SKU: INT162-4000
We Also Recommend
- choosing a selection results in a full page refresh