ORM24D22 - ORM Series

Series: ORM Questions? Contact Littelfuse Support
Littelfuse Delay on Make Relays
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The ORM Series features open PC board construction for reduced cost. It has isolated, 10A, DPDT relay contacts and all connections are 0.25 in (6.35 mm) male quick connect terminals. The time delay may be ordered as factory fixed, onboard knob, or external adjustment. Time delays from 0.05 - 300 seconds.


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 voltage is removed.
Reset: Removing input voltage resets the time delay and output.

Property (Mouseover for details) Value
Input Voltage (V) 24VDC
Input Tolerance (%) -15% - 20%
Output Type Electromechanical relay
Output Form DPDT isolated
Output Load Rating (VA) 10A resistive @ 120/240VAC and 28VDC; 1/3hp @ 120/240VAC
Time Delay Type Analog circuitry
Time Delay Range 0.5 - 30s onboard adjustable
Time Delay Tolerance (%) Guaranteed range
Recycle Time (ms) After timing: ≤16ms; During timing: 0.1% of max. time delay or 75ms whichever is greater
Repeat Accuracy (%) ±2% or 20ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤ ±10%
Isolation Voltage (V) ≥1500V RMS input to output
Polarity DC units are reverse polarity protected
Life Mechanical - 1 x 107; Electrical - 1 x 106
Power Consumption 2.25W
Termination Type 0.25 in. (6.35mm) male quick connect terminals
Mounting Method Surface mount with four #6 (M3.5 x 0.6) screws
Operating Temperature -20° to 65°C (-4°F to 149°F)
Storage Temperature (F/C) -30° to 85°C (-22°F to 185°F)
Weight (lbs/g) ≅2.7oz (77g)
Sample capable No