TSD1 Series - Delay On Make Timer

Littelfuse Delay on Make Relays
The TSD1 Series is designed for more demanding commercial and industrial applications where small size and accurate performance is 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 TSD1 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 (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 energizes and remains energized until input voltage is removed.
Reset: Removing input voltage resets the time delay and output.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Storage Temperature (F/C)Time Delay RangeSample capableCompare
TSD1311.2S24VDCNO open during timing-40° to 85°C (-40°F to 185°F)1.2s fixedNo
TSD132124VDCNO open during timing-40° to 85°C (-40°F to 185°F)1 - 100s externally adjustableNo
TSD1424120VACNO open during timing-40° to 85°C (-40°F to 185°F)1 - 100m externally adjustableNo