Description
The Intermatic 156T1978A is a high-quality mechanical time-switch tripper designed to add precise, dependable on/off scheduling to your existing Intermatic timers. Built for durability and trusted by electricians, pool technicians, and HVAC specialists, this metal tripper ensures your lighting, pool pump, heater, or other equipment runs exactly when it should — no guessing, no wasted energy.
Key Features
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OEM-grade compatibility – The 156T1978A is engineered for use with T100, T170, T7000, and WH40 series analog/mechanical time switches.
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Easy installation – Simply snap the tripper onto your timer dial, adjust to the desired ON/OFF times, tighten the set screw, and you’re done.
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Precise scheduling, energy savings – With a separately marked ON and OFF tripper, you get accurate control of your equipment. Great for pool pumps, heaters, lighting, water heaters, and HVAC systems.
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Durable metal construction – Built to last, the metal trippers resist wear and handle up to 240/277 V at 40 A, making them suitable for both residential and commercial loads.
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Replacement or backup option – Whether replacing lost pins or adding extra scheduling flexibility, the 156T1978A provides a reliable backup or spare for existing timers.
