TSD2411S - TSD2 Series

Series: TSD2 Questions? Contact Littelfuse Support
Littlefuse Interval Relays
The TSD Series is designed for more demanding commercial and industrial applications where small size and accurate performance are required. The factory calibration for fixed time delays is within 1% of the target time delay. The repeat accuracy, under stable conditions, is 0.1% of the time delay. The TSD Series is rated to operate over an extended temperature range. Time delays of 0.1 seconds to 100 hours are available. The output is rated 1A steady and 10A inrush. The modules are totally solid state and encapsulated to protect the electronic circuitry.


Operation (Interval)
Upon application of input voltage, the time delay begins. The output is energized during the time delay. At the end of the time delay, the output de-energizes and remains de-energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.

Property (Mouseover for details) Value
Input Voltage (V) 120VAC
Input Tolerance (%) ±20%
Input AC Line Frequency (Hz) 50/60Hz
Output Type Solid state
Output Form NO closed during timing
Output Load Rating (VA) 1A steady state; 10A inrush at 60°C
Output Voltage Drop (V) ≅2.5V @ 1A
Time Delay Range 1s fixed
Time Delay Tolerance (%) ≤±1%
Reset Time (ms) ≤150ms
Repeat Accuracy (%) ±0.1% or 20ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤ ±1%
Open State Leakage Current (A) ≅5mA @ 230VAC
Insulation Resistance ≥100 MΩ
Dielectric Breakdown ≥2000V RMS terminals to mounting surface
Circuitry Encapsulated
Power Consumption ≤2VA
Termination Type 0.25 in. (6.35mm) male quick connect terminals
Mounting Method Surface mount with one #10 (M5 x 0.8) screw
Operating Temperature -40° to 75°C (-40°F to 167°F)
Storage Temperature (F/C) -40° to 85°C (-40°F to 185°F)
Humidity 95% relative non-condensing
Dimensions 2.00 x 2.00 x 1.21 in. (50.8 x 50.8 x 30.7mm)
Weight (lbs/g) ≅2.4oz (68g)
Sample capable No