TRM Series - Delay On Make Timer

Littelfuse Delay on Make Relays
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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.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Storage Temperature (F/C)Time Delay RangeSample capableCompare
TRM120A2X30120VACIsolated DPDT-30° to 85°C (-22°F to 185°F)1 - 30s knob adjustNo
TRM120A2Y120120VACIsolated DPDT-30° to 85°C (-22°F to 185°F)2 - 120s knob adjustNo
TRM120A2Y180120VACIsolated DPDT-30° to 85°C (-22°F to 185°F)2 - 180s knob adjustNo
TRM24A8Y524VACIsolated SPDT-30° to 85°C (-22°F to 185°F)0.1 - 5s external adjustNo
TRM24D1X1024VDC / 28VDCIsolated DPDT-30° to 85°C (-22°F to 185°F)10s fixedNo
TRM24D1X224VDC / 28VDCIsolated DPDT-30° to 85°C (-22°F to 185°F)2s fixedNo