Littelfuse TDMB411, TDMB Series, Delay on Make/Delay on Break Timer, 120VAC, 0.1 - 102.3s Time Setting, 8 Pins, SPDT Contact Form
Couldn't load pickup availability
Use this text to encourage communication or promote sharing on social networks.
The TDMB combines both delay-on-make and delay-on-break functions into one plug-in package. Selection of the time period is accomplished with dual switches, one for the on delay and the other for the off delay. SPDT or DPDT output options provide isolated, 10A switching capability.
Operation (Delay-on-Make/Delay-on-Break)
Input voltage must be applied at all times. The output relay is de-energized. Upon closure of the initiate switch, the green LED glows and the delay-on-make time delay (T1) begins. At the end of T1, the output relay energizes and the red LED glows. When the initiate switch opens, the green LED turns OFF and the delay-on-break time delay (T2) begins. At the end of T2, the output relay de-energizes and the red LED turns OFF. Reset: Removing input voltage resets time delay and output. Opening the initiate switch during the delay-on-make delay, resets T1. Closing the initiate switch during the delay-on-break delay, resets T2.
** For CE approved applications, power must be removed from the unit when a switch position is changed.
| Time Delay | |
| Type | Microcontroller circuitry |
| Range** |
0.1 - 102.3s in 0.1s increments 1 - 1023s in 1s increments 10 - 10,230s in 10s increments |
| Repeat Accuracy | ±0.1% or 20ms, whichever is greater |
| Setting Accuracy | ≤ ±2% or 50ms, whichever is greater |
| Reset Time | ≤ 150 ms |
| Time Delay vs Temp. & Voltage | ≤ ±2% |
| Control LED Indicator | Green; on when the initiate switch is closed |
| Input | |
| Voltage |
12 or 24VDC; 24, 120, or 230VAC; 24 to 240VAC/DC; 12 to 48VDC |
| Tolerance |
12VDC & 24VDC/AC -15 %–20 % 110 to 230VAC/DC -20 %–10 % |
| AC Line Frequency/DC Ripple | 50/60 Hz / ≤ 10% |
| Power Consumption | AC ≤ 2VA; DC ≤ 2W |
| Output | |
| Type | Electromechanical relay |
| Form | SPDT or DPDT |
| Rating |
10A resistive @ 120/240VAC & 28VDC; 1/3 hp @ 230VAC |
| Life | Mechanical - 1 x 10⁷ ; Electrical - 1 x 10⁵ |
| Max. Switching Voltage | 250VAC |
| Relay LED Indicator | Red; on when output relay energizes (not included on 12VDC units) |
| Protection | |
| Insulation Resistance | ≥ 100M |
| Polarity | DC units are reverse polarity protected |
| Isolation Voltage | ≥ 1500V RMS input to output |
| Mechanical | |
| Mounting | Plug-in socket |
| Dimensions |
H 81.3 mm (3.2”); W 60.7 mm (2.4”); D 45.2 mm (1.8”) |
| Termination | Octal 8-pin plug-in, magnal 11-pin plug-in |
| Environmental | |
| Operating/Storage Temperature | -20° to 60°C / -30° to 85°C |
| Weight | ≅ 6 oz (170 g) |