ORM120A25 - ORM Series

Series: ORM
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

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.

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Product Literature

For Technical Questions

Call +1 800-832-3873 or email us at relays@littelfuse.com 

Property (Mouseover for details) Value
Input Voltage (V) 120 V ac
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50/60
Output Type Electromechanical relay
Output Form Isolated DPDT
Output Load Rating (VA) 10 A resistive @ 120/240 V ac and 28 V dc; 1/3 hp @ 120/240 V ac
Time Delay Type Analog
Time Delay Range 3 - 300 s onboard adjustable
Time Delay Tolerance (%) Guaranteed range
Recycle Time (ms) After timing: ≤16; During timing: 0.1% of max. time delay or 75 whichever is greater
Repeat Accuracy (%) ±2% or 20 ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤±10%
Undervoltage Trip Voltage Analog
Life Electrical: 1 x 10⁶; Mechanical: 1 x 10⁷
Power Consumption 2.25 W
Termination Type 0.25 in. (6.35 mm) male quick connect terminals
Mounting Method Surface mount with 4 #6 (M3.5 x 0.6) screws
Operating Temperature -20° to 65°C (-4° to 149°F)
Storage Temperature (F/C) -30° to 85°C (-22° to 185°F)
Weight (lbs/g) 0 Kg

To request product environmental information, please complete the Product Environmental Information Request Form.