Time Delay Relays DELAY-ON-MAKE * TDM / TDMH / TDML Series Delay-on-Make Timer Description The TDM/TDMH/TDML series is a delay-on-make timer that combines accurate digital circuitry with isolated, DPDT relay contacts in an industry standard 8-pin plug-in package. DIP switch adjustment allows precise selection of the time delay over the full time delay range. The TDM/TDMH/TDML series is the product of choice for custom control panel and OEM designers. 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 relay energizes and remains energized until input voltage is removed. Reset: Removing input voltage resets the time delay and Wiring Diagram output. Features & Benefits FEATURES BENEFITS Wide delay range User selectable via DIP switches for fine (0.1 s to 2.8 h) tuning to individual applications. Microcontroller based Repeat Accuracy +/- 0.1 % Dip switch adjustment Provides first time setting accuracy of +/- 2 % Relay contacts are isolated. Provides flexibility for use in most Setting accuracy +/- 2 % applications L1 N/L2 LED indication Provides visual indication of time delay status Isolated 8 A, DPDT Allows control of loads with independent output contacts voltage sources Ordering Information MODEL INPUT VOLTAGE DELAY RANGE Accessories TDM120AL 120 V ac 11023 s in 1 s increments OT08PC 8-pin Octal Socket for UL listing* 8-pin 35 mm DIN-rail or surface mount. Rated TDM12DL 12 V dc 11023 s in 1 s increments at 10 A 600 V ac. Surface mounted with two TDM230AL 230 V ac 11023 s in 1 s increments 6 screws or snaps onto a 35 mm DIN rail. TDM24AL 24 V ac 11023 s in 1 s increments P1011-6 Octal Socket for UL listing* TDM24DL 24 V dc/28 V dc 11023 s in 1 s increments 8-pin surface mount socket with binder head TDMH120AL 120 V ac 10 10230 s in 10 s increments screw terminals. Rated 10 A 600 V ac. TDMH24AL 24 V ac 10 10230 s in 10 s increments C103PM (AL) DIN Rail TDML110DL 110 V dc 0.1 102.3 s in 0.1 s increments 35 mm aluminum DIN rail available in a 36 in. TDML120AL 120 V ac 0.1 102.3 s in 0.1 s increments (91.4 cm) length. TDML12DL 12 V dc 0.1 102.3 s in 0.1 s increments TDML24DL 24 V dc/28 V dc 0.1 102.3 s in 0.1 s increments Littelfuse.com 2021 Littelfuse, Inc. 1 of 2 Rev: 1-B-030121Time Delay Relays DELAY-ON-MAKE Specifications Binary Switch Operation Time Delay Type Digital integrated circuitry Range 0.1102.3 s in 0.1 s increments 11023 s in 1 s increments 1010,230 s in 10 s increments Repeat Accuracy 0.1 % Setting Accuracy 2 % Reset Time 150 ms Time Delay vs. Temperature & Voltage 5 % Indicator LED glows during timing relay is de-energized Input Voltage 12, 24, or 110 V dc 24, 120, or 230 V ac Tolerance Function Diagram 12 V dc & 24 Vdc/ac -15 %20 % DELAY-ON-MAKE (ON-DELAY) V = Voltage 110 V ac/dc to 230 V ac -20 %10 % NO = Normally Ac Line Frequency 50/60 Hz Open Contact Power Consumption 3.25W NC = Normally Output Closed Contact Type Electromechanical relay TD = Time Delay Form DPDT R = Reset Rating 8 A resistive 120/240 V ac = Undened 1/3 hp 120/240 V ac Time 7 6 Life Mechanical - 1 x10 Electrical - 1 x 10 Protection Polarity Dc units are reverse polarity protected Isolation Voltage 1500 V RMS input to output 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 C to 65 C / -30 C to 85 C 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