TDMB411 - TDMB Series

Series: TDMB
Questions? Contact Littelfuse Support
External overview image
Roll Over to Zoom
Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

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.

Check Stock Order Samples

Product Literature

For Technical Questions

Call +1 800-832-3873 or email us at relays@littelfuse.com 

Property (Mouseover for details) Value
Input Voltage (V) 120 V ac
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50/60
Output Type Electromechanical relay
Output Form SPDT
Output Load Rating (VA) 10 A resistive @ 120/240 V ac and 28 V dc; 1/3 hp @ 230 V ac
Time Delay Type Microcontroller
Time Delay Range DOM: 0.1 - 102.3 s in 0.1 s increments; DOB: 0.1 - 102.3 s in 0.1 s increments
Recycle Time (ms) ≤150
Repeat Accuracy (%) ±0.1% or 20 ms whichever is greater
Setting Accuracy ≤±2% or 50 ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤±2%
Indication Control LED indicator is on (green) when the initiate switch is closed; Relay LED indicator is on (red) when output relay energized
Insulation Resistance ≥100
Life Electrical: 1 x 10⁶; Mechanical: 1 x 10⁷
Power Consumption ≤2 VA
Termination Type Octal 8-pin plug-in or magnal 11-pin plug-in
Mounting Method Plug-in socket
Operating Temperature -20° to 60°C (-4° to 140°F)
Storage Temperature (F/C) -30° to 85°C (-22° to 185°F)
Dimensions 3.2 H x 2.4 W in. (81.3 x 60.7 mm)
Weight (lbs/g) 0 Kg
Dimensions 3.2 H x 2.4 W in. (81.3 x 60.7 mm)

To request product environmental information, please complete the Product Environmental Information Request Form.