PRLM423 - PRLM Series

Series: PRLM
Availability: Obsolete

Obsolete
Questions? Contact Littelfuse Support
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Disclaimer Notice

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 PRLM Series is designed for use in non-critical timing applications. It offers low cost, knob adjustable timing control, full 10A relay output, and onboard LED indication. The knob adjustment provides a guaranteed time range of up to 10 minutes in 6 ranges. The onboard LED indicates whether or not the unit is timing (flashing LED) as well as the status of the output.


Operation (Delay-on-Make)
The time delay is initiated when input voltage is applied. LED flashes during timing. At the end of the delay period, the output contacts energize. LED is on steady after the unit times out.
Reset: Reset is accomplished by removal of input voltage. There is no false output when reset during timing.

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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 @ 28 V dc; 10 A resistive @ 240 V ac; 1/3 hp @ 120/240 V ac
Time Delay Type Analog
Time Delay Range 1 - 60 s adjustable
Time Delay Tolerance (%) Guaranteed range
Recycle Time (ms) After timing: ≤20; During timing: 0.1% of max. time delay or 75 whichever is greater
Reset Time (ms) ≤50
Repeat Accuracy (%) ±2% or 20 ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤±10%
Indication LED flashes during timing; LED on steady while output energized
Undervoltage Trip Voltage Analog
Surge Protection IEEE C62.41-1991 Level A
Insulation Resistance ≥100
Life Electrical: 1 x 10⁶; Mechanical: 1 x 10⁷
Power Consumption ≤2.25 W
Termination Type Octal 8-pin plug-in
Mounting Method Plug-in socket
Operating Temperature -20° to 65°C (-4° to 149°F)
Dimensions 3.6 H x 2.39 W in. (91.6 x 60.7 mm)
Weight (lbs/g) 0 Kg
Dimensions 3.6 H x 2.39 W in. (91.6 x 60.7 mm)

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