TAC1 Series - Delay on Make HVAC Timer

Littelfuse HVAC Relays
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The TAC1 Series was designed to delay the operation of a compressor relay. It eliminates the possibility of relay chatter due to half-wave failure of the output. It connects in series with the load relay coil and provides a delay-on-make time delay each time input voltage is applied. It can be used for random start, anti-short cycling, sequencing, and many other applications. It is an excellent choice for all air conditioning and refrigeration equipment.

Operation (Delay-on-Make)
Upon application of input voltage, the time delay begins. The output is de-energized before and during the time delay. At the end of the time delay, the output energizes and remains energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Storage Temperature (F/C)Time Delay RangeSample CapableCompare
TAC122324VACNO open during timing-40° to 85°C (-40°F to 185°F)2 - 180s externally adjustableNo
TAC1411120VACNO open during timing-40° to 85°C (-40°F to 185°F)1s fixedNo
TAC1412120VACNO open during timing-40° to 85°C (-40°F to 185°F)2s fixedNo
TAC1413120VACNO open during timing-40° to 85°C (-40°F to 185°F)3s fixedNo
TAC14164120VACNO open during timing-40° to 85°C (-40°F to 185°F)64s fixedNo
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