TRS120A2Y10 - TRS Series

Series: TRS Questions? Contact Littelfuse Support
Littelfuse Single Shot Relays
The TRS Series combines an isolated, 10A electromechanical, relay output with analog timing circuitry. False trigger of the TRS by a transient is unlikely because of the complete isolation of the circuit from the line prior to initiation. The initiate contact is common to one side of the line and may be utilized to operate other loads. Installation is easy due to the TRS’s industry standard 8 or 11-pin plug-in base wiring.


Operation (Single Shot)
Input voltage must be applied to the input before and during timing. Upon momentary or maintained closure of the initiate switch (leading edge triggered), the output energizes for a measured interval of time. At the end of the delay, the output de-energizes. Opening or reclosing the initiate switch during timing has no affect on the time delay. Applying input voltage with the initiate switch closed will energize the load and begin the time delay.
Reset: Reset occurs when the time delay is complete and the initiate switch is opened. Loss of input voltage resets the time delay and output.

Property (Mouseover for details) Value
Input Voltage (V) 120VAC
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50/60Hz
Output Type Electromechanical relay
Output Form Isolated SPDT
Output Load Rating (VA) 10A resistive @ 120/240VAC and 28VDC; 1/3hp @ 230VAC
Time Delay Type Analog circuitry
Time Delay Range 0.1 - 10s knob adjustable
Time Delay Tolerance (%) ±10%
Recycle Time (ms) ≤250ms
Reset Time (ms) ≤75ms
Initiate Time (ms) ≤70ms
Repeat Accuracy (%) ±2% or 20ms whichever is greater
Setting Accuracy ±10%
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤ ±10%
Insulation Resistance ≥100 MΩ
Isolation Voltage (V) ≥1500V RMS input to output
Life Mechanical - 1 x 107; Electrical - 1 x 106
Power Consumption ≤3.25W
Termination Type Octal 8-pin
Mounting Method Plug-in socket
Operating Temperature -20° to 65°C (-4°F to 149°F)
Storage Temperature (F/C) -40° to 85°C (-40°F to 185°F)
Dimensions 3.62 x 2.39 x 1.78 in. (91.9 x 60.7 x 45.2mm)
Weight (lbs/g) ≅6oz (170g)
Sample capable No