Littelfuse TDMH24AL, TDMH Series, Delay On Make Timer, 24VDC, 10–10230s Time Setting, 8 Pins, DPDT Contact Form
FOR ALL ORDERS OUTSIDE CANADA, CUSTOMERS ARE RESPONSIBLE FOR ANY IMPORT DUTIES, TARIFFS, TAXES, AND CUSTOMS FEES THAT MAY APPLY TO THEIR ORDERS.
Couldn't load pickup availability
Use this text to encourage communication or promote sharing on social networks.
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 output.
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 integrated circuitry |
| Range |
0.1–102.3 s in 0.1 s increments 1–1023 s in 1 s increments 10–10,230 s in 10 s increments |
| Repeat Accuracy | ±0.1 % |
| Setting Accuracy | ±2 % |
| Reset Time | ≤ 150 ms |
| Time Delay vs Temp. & Voltage | ±5 % |
| Indicator | LED glows during timing; relay is energized |
| Input | |
| Voltage | 12, 24, or 110 V dc; 24, 120, or 230 V ac |
| Tolerance |
12 V dc & 24 V dc/ac -15 %–20 % 110 V ac/dc to 230 V ac -20 %–10 % |
| AC Line Frequency | 50/60 Hz |
| Power Consumption | ≤ 3.25W |
| Output | |
| Type | Electromechanical relay |
| Form | DPDT |
| Rating |
8 A resistive @ 120/240 V ac; 1/3 hp @ 120/240 V ac |
| Life | Mechanical - 1 x 10⁷ ; Electrical - 1 x 10⁶ |
| Protection | |
| Isolation Voltage | ≥ 1500 V rms input to output |
| Polarity | Dc units reverse polarity protected |
| 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 |
| Safety Marks UL (socket required)* | UL 508 (E57310) |
| Weight | ≅ 4 oz (113 g) |