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Grey steel box with rotary dial and trippers

Intermatic

Intermatic T1976 24-hour electromechanical timer SPDT 20 A 208-277 V AC

SKU CH-FMZJ-SHV5B

Electromechanical timer with 24-hour dial, SPDT contacts rated 20 A at 208-277 V AC, steel NEMA 1 enclosure, and 48 on/off cycles per day

  • 24-hour scheduling with up to 48 daily on/off cycles
  • SPDT single-pole switching handles 20 A at 208-277 V AC
  • Minimum 15-minute intervals and 23-3/4 hour maximum runtime
  • Steel NEMA 1 enclosure rated for -40 to +130 °F operation
  • Includes 96 trippers with extra 2E132 spares for flexible programming

24-hour electromechanical timer for industrial

The Intermatic T1976 is a 24-hour electromechanical timer designed for single-pole double-throw switching at 20 A across 208 to 277 V AC. It provides up to 48 on/off cycles per day with a minimum setting of 15 min and a maximum of 23-3/4 hr. A steel NEMA 1 enclosure and 96 included trippers suit commercial and industrial scheduling tasks.

Replaces basic time switches lacking day-skip

This timer upgrades simple on/off clocks by adding a Day Skipper function and multi-operation capability for more flexible daily programs. The jump is worth it when a process needs omitted days or multiple distinct switching events without manual intervention. It handles 1/2 hp at 120 V and 1 hp at 240 V motor loads directly.

Limited to 24-hour repeat cycles

The electromechanical dial repeats every 24 hours, so schedules longer than one day require external logic. The single SPDT pole controls only one circuit, and the NEMA 1 steel enclosure is rated for indoor use between -40 and +130 °F. No battery backup or digital programming is provided.

How it compares

Measured against everything we stock in Contactors, Relays & Motor Starters, at today’s prices. Recalculated every night.

Price $169.99
Pricier than about 87% of the 1,098 comparable items (median $61.99).

Specifications

Product
Brand nameINTERMATIC

Questions about this item

Will the 5 in wide steel enclosure with NEMA 1 rating fit in my existing panel?

The timer measures 5 in wide, 3 in deep and 7 3/4 in high inside a steel NEMA 1 enclosure, so check those dimensions against your panel cut-out.

How do I install the T1976 on a 208-277 V AC circuit and what step is often missed?

Wire the SPDT contacts to the 20 A load, set the 15 min minimum and 23-3/4 hr maximum on the 24-hour dial, then install the 96 included trippers for each on/off event — forgetting the trippers is the common error.

When will I need extra trippers and which part number do I order?

The timer ships with 96 trippers supporting up to 48 on/off cycles per day; when those are lost or worn, order replacement trippers 2E132.

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