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Brand: Intermatic | Manufacturer Part Number: 156T1978A | Big Frog Supply SKU: 156T1978A

Product Overview

The Intermatic 156T1978A is a replacement tripper package for compatible Intermatic mechanical time switches. The trippers fasten to the timer dial and establish the scheduled ON and OFF switching points. This kit is intended for maintenance when the original trippers have been lost, damaged, or no longer remain securely attached to the dial.

Key Features

  • Genuine Intermatic replacement tripper package
  • Includes one ON tripper and two OFF trippers
  • Supports replacement or restoration of scheduled switching points
  • Designed for selected heavy-duty mechanical timer families

Compatibility

Intermatic identifies the 156T1978A for compatible T100 Series and T7000 Series time switches and the WH40 water-heater timer. Confirm the full timer model before ordering because other Intermatic mechanisms can use different tripper designs.

Installation Notes

Disconnect power before opening or servicing the timer enclosure. Position the ON and OFF trippers at the desired dial times, tighten them securely without damaging the dial, and test the complete switching schedule before returning the timer to normal use.

Frequently Asked Questions

What comes in the package?

The current Intermatic package includes one ON tripper and two OFF trippers.

Will these fit a T100 Series timer?

They are intended for compatible T100 Series models, but the exact timer model should still be verified.

Why Buy This Product from Big Frog Supply?

The 156T1978A gives owners of compatible T100, T7000, and WH40 timers the correct mix of replacement switching pieces. Big Frog Supply states the verified package contents so you know this is not a two-piece or twelve-piece tripper set.

Replacement Tripper package for T100 Series, T7000 series and WH40 timer products, (8 pieces total)

Timing/Scheduling ON/OFF
A set of two trippers. 1 on & 1 off, which is used for the following Intermatic time clocks:
T100 Series Time Switches
T10000R Series Control Centers
T10000RT Series Control Centers
T21000R Series Control Panels
T30000R Series Control Panels
T40000R Series Control Panels
T40000R4 Control Panel
T40000RT Series Control Panels
PF1112T Freeze Protection Control
PF1202T Freeze Protection Control
PF1222TB Freeze Protection Control

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