Littelfuse PRLM423, PRLM Series, 120VAC, On-Delay Time Delay Relay DPDT (2 Form C) 1 Sec ~ 60 Sec Delay 10A @ 240VAC Socketable
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The PRLM series is designed for use in non-critical timing applications. It offers low cost, fixed or knob adjustable timing control, full 8 A relay output, and onboard LED indication. 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.
Pre-order 6-8 Weeks
*UL Listed when used with Part Number OT08-PC or RB08-PC manufactured by Custom Connector Corp.
Note: Manufacturer's recommended screw terminal torque for the OT series sockets is 12 in-lbs
| Time Delay | |
| Type | Digital circuitry |
| Range | See "Ordering Information" table |
| Repeat Accuracy | ±2 % |
| Fixed Time Tolerance & Setting Accuracy | +/- 5 % |
| Reset Time | ≤ 50 ms |
| Recycle Time |
After timing: ≤ 20 ms During timing: 0.1% of max. time delay or 75 ms, whichever is greater |
| Time Delay vs Temp. & Voltage | ≤ ±5% |
| Input | |
| Voltage | 120 VAC |
| Tolerance | 120 VAC : -20 %–10 % |
| AC Line Frequency | 50/60 Hz |
| Power Consumption | ≤ 3.25W |
| Output | |
| Type | Electromechanical relay |
| Form | Isolated, DPDT |
| Rating |
8 A resistive @ 120/240 VAC; 1/3 hp @ 120/240 VAC |
| Life |
Mechanical - 1x10⁷; Electrical - 1x10⁶ |
| Protection | |
| Surge | IEEE C62.41-1991 Level A |
| Isolation Voltage | ≥ 1500 V rms input to output |
| Insulation Resistance | ≥ 100 MΩ |
| Polarity | Dc units are reverse polarity protected |
| Indication | |
| Type | LED |
| Operation |
During timing - flashing Output energized - on steady |
| Mechanical | |
| Mounting | Plug-in socket |
| Dimensions |
H 44.45 mm (1.75”) W 60.33 mm (2.38”) D (with socket) 104.78 mm (4.13”) |
| Termination | Octal 8-pin plug-in |
| Environmental | |
| Operating/Storage Temperature | -20° to 65°C / -30° to 85°C |
| Weight | ≅ 4 oz (113 g) |
| Safety Marks | |
| UL (socket required)* | UL 508 (E57310) |