Intermatic
Intermatic T171 24 hr electromechanical timer 120V 40A
A 24-hour electromechanical timer switches 40 A at 120 V with up to 12 daily on/off cycles
- 24-hour scheduling with 12 daily on/off cycles
- 40 A SPST contact handles 2 hp at 120 V AC
- Steel NEMA 1 enclosure with grey enamel finish
- Minimum one-hour setting and 23-hour maximum range
- Two trippers included with extra trippers available
Intermatic T171 24-Hour Timer
The Intermatic T171 is an electromechanical timer designed for 120 V AC circuits up to 40 A. It provides automatic on/off control for motors, pumps or lighting loads rated up to 2 hp at 120 V. The steel enclosure carries a NEMA 1 rating and a gray enamel finish. It suits installers who need a simple daily schedule without digital programming.
Replaces Manual Switching
This timer replaces a manual switch when a load must run on a fixed daily pattern. The jump is worth it when the application repeats every 24 hours and requires up to twelve on/off cycles per day. It is not for circuits needing multiple independent schedules, voltage other than 120 V AC, or more than 40 A of switching capacity.
Sustained Operation Behaviour
Under continuous daily use the motor-driven dial advances reliably and the SPST contacts handle the full 40 A resistive rating. The mechanism supports a minimum one-hour setting and a maximum 23-hour on period. Two trippers are included and extra trippers are available separately for additional switching points.
Highlights
- 24-hour scheduling with 12 daily on/off cycles
- 40 A SPST contact handles 2 hp at 120 V AC
- Steel NEMA 1 enclosure with grey enamel finish
- Minimum one-hour setting and 23-hour maximum range
- Two trippers included with extra trippers available
Specifications
| Brand | INTERMATIC |
|---|
Questions about this item
What size opening does the steel enclosure need for mounting?
The steel enclosure measures 5 in wide, 3 in deep and 7 13/16 in high, so the mounting cutout must accommodate those dimensions.
How are the on/off trippers set on the 24-hour dial, and what is the common mistake?
Insert the two included trippers into the dial slots for each desired on and off time; the common mistake is placing both trippers for the same action instead of one on and one off.
Which replacement trippers are used when the originals wear out?
Order extra trippers using part number 11Z965 when the original two trippers need replacement.
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