TRM24D1X10 - TRM Series

Series: TRM Questions? Contact Littelfuse Support
Littelfuse Delay on Make Relays
The TRM Series is a combination of analog electronic circuitry and electromechanical relay output. It provides input to output isolation with a wide variety of input voltages and time ranges. Standard plug-in base wiring, fast reset, rugged enclosure, and good repeat accuracy make the TRM a select choice in any OEM application.


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 relay 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) 24VDC / 28VDC
Input Tolerance (%) -15% - 20%
Output Type Electromechanical relay
Output Form Isolated DPDT
Output Load Rating (VA) 10A resistive @ 120/240VAC and 28 VDC; 1/3hp @ 120/240VAC
Time Delay Type Analog circuitry
Time Delay Range 10s fixed
Time Delay Tolerance (%) Fixed time tolerance and setting accuracy: ±20%
Recycle Time (ms) After timing: ≤20ms; During timing: 0.1% of max time delay or 75ms whichever is greater
Reset Time (ms) ≤50ms
Repeat Accuracy (%) ±2% or 20ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤ ±10%
Insulation Resistance ≥100 MΩ
Isolation Voltage (V) ≥1500V RMS between input and output terminals
Polarity DC units are reverse polarity protected
Life Mechanical - 1 x 107; Electrical - 1 x 106
Power Consumption ≤2.25W
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) -30° to 85°C (-22°F to 185°F)
Dimensions 3.62 x 2.39 x 1.78 in. (91.6 x 60.7 x 45.2mm)
Weight (lbs/g) ≅6oz (170g)
Sample capable No