Time Delay Relays DELAY-ON-MAKE * PRLM Series Description 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. Wiring Diagram Features & Benefits FEATURES BENEFITS Electronic circuitry with Repeat Accuracy +/- 2 % electromechanical relay Knob adjustable 8-pin octal DPDT Guaranteed time range of up to 60 sec. time delay L1 N/L2 Isolated 8 A, DPDT Allows control of loads with independent output contacts voltage sources Provides relay status both during and after LED indication timing Industry standard octal Ordering Information Eliminates need for special connectors plug connection MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY Accessories PRLM41180 120 V ac Fixed 180 s OT08PC 8-pin Octal Socket for UL listing* PRLM423 120 V ac Adjustable 160 s 8-pin 35 mm DIN-rail or surface mount. Rated at 10 A 600 V ac. Surface mounted with two 6 screws or snaps onto a 35 mm DIN rail. P1011-6 Octal Socket for UL listing* 8-pin surface mount socket with binder head screw terminals. Rated 10 A 600 V ac. C103PM (AL) DIN Rail 35 mm aluminum DIN rail available in a 36 in. (91.4 cm) length. Littelfuse.com 2021 Littelfuse, Inc. 1 of 2 Rev: 1-B-030121Time Delay Relays DELAY-ON-MAKE Specifications Function Diagram Time Delay V = Voltage DELAY-ON-MAKE (ON-DELAY) Type Digital circuitry NO = Normally Range SeeOrdering Informatio table Open Contact Repeat Accuracy 2 % NC = Normally Fixed Time Tolerance Closed Contact & Setting Accuracy +/- 5 % TD = Time Delay R = Reset Reset Time 50 ms = Undened Recycle Time After timing: 20 ms Time During timing: 0.1% of max. time delay or 75 ms, whichever is greater Time Delay vs Temp. & Voltage 5 % Input Voltage 120 V ac Tolerance 120 V ac -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 V ac 1/3 hp 120/240 V ac 7 Life Mechanical - 1x10 6 Electrical - 1x10 Protection Surge IEEE C62.41-1991 Level A Isolation Voltage 1500 V rms input to output Insulation Resistance 100 M 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 65C / -30 to 85C Weight 4 oz (113 g) Safety Marks UL (socket required)* UL 508 (E57310) *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. Disclaimer Notice Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer. Littelfuse.com 2021 Littelfuse, Inc. 2 of 2 Rev: 1-B-030121