PRLM41180 - PRLM Series

Series: PRLM Questions? Contact Littelfuse Support
Littelfuse Delay on Make Relays
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.

Property (Mouseover for details) Value
Input Voltage (V) 120VAC
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50/60Hz
Output Type Electromechanical relay
Output Form Isolated DPDT
Output Load Rating (VA) 10A resistive @ 28VDC; 10A resistive @ 240VAC; 1/3hp @ 120/240VAC
Time Delay Type Analog circuitry
Time Delay Range 180s fixed
Time Delay Tolerance (%) ±10%
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%
Indication LED flashes during timing; LED on steady while output energized
Surge Protection IEEE C62.41-1991 Level A
Insulation Resistance ≥100 MΩ
Isolation Voltage (V) ≥1500V RMS input to output
Life Mechanical - 1 x 107; Electrical - 1 x 106
Power Consumption ≤2.25W
Termination Type Octal 8-pin plug-in
Mounting Method Plug-in socket
Operating Temperature -20° to 65°C (-4°F to 149°F)
Dimensions 3.60 x 2.39 x 1.78 in. (91.6 x 60.7 x 45.2mm)
Weight (lbs/g) ≅6.0oz (170g)
Sample capable No