TAC1411 - TAC1 Series

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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.

Property (Mouseover for details) Value
Input Voltage (V) 120VAC
Input Tolerance (%) ±20%
Input AC Line Frequency (Hz) 50/60Hz
Output Type Solid state
Output Form NO open during timing
Output Load Rating (VA) 0.5A steady state 10A inrush at 60°C
Output Voltage Drop (V) ≅4.2V @ 0.5A
Time Delay Type Analog circuitry
Time Delay Range 1s fixed
Time Delay Tolerance (%) ≤20%
Recycle Time (ms) After timing: ≤20ms; During timing: 0.1% of time delay or 75ms whichever is greater
Repeat Accuracy (%) ±2%
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤ ±10%
Insulation Resistance ≥100 MΩ
Dielectric Breakdown ≥2000V RMS terminals to mounting surface
Circuitry Encapsulated
Termination Type 0.25 in. (6.35mm) male quick connect terminals
Mounting Method Surface mount with one #10 (M5 x 0.8) screw
Operating Temperature -40° to 80°C (-40°F to 176°F)
Storage Temperature (F/C) -40° to 85°C (-40°F to 185°F)
Humidity 95% relative non-condensing
Dimensions 2.00 x 2.00 x 1.21 in. (50.8 x 50.8 x 30.7mm)
Weight (lbs/g) ≅2.4oz (68g)
Sample capable No