MSM43W6 - MSM Series

Series: MSM Questions? Contact Littelfuse Support
Littelfuse Delay on Make Relays
The MSM replaces bi-metal type timing with reliable solid-state circuitry. There are no moving parts to arc or wear. It is a cost effective solution for OEM designers. It is available for printed circuit board mounting or surface mounting with a removable bracket and wire leads. The MSM offers immediate reset on removal of power.


Operation (Delay-on-Make)
The time delay begins upon application of input voltage. 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.

Property (Mouseover for details) Value
Input Voltage (V) 120VAC
Input Tolerance (%) ±10%
Input AC Line Frequency (Hz) 50/60Hz
Output Type Solid state
Output Form NO open during timing
Output Load Rating (VA) 0.5A steady state at 25°C; 0.25A stead state at 60°C
Output Voltage Drop (V) ≅2.5V @ 0.5A
Minimum Output Holding Current (mA) 40mA
Time Delay Type Analog circuitry
Time Delay Range 3s fixed
Time Delay Tolerance (%) ±15%
Recycle Time (ms) ≤75ms
Repeat Accuracy (%) ±5%
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤ ±15%
Insulation Resistance ≥100 MΩ
Dielectric Breakdown ≥2000V RMS terminals to mounting surface
Circuitry Encapsulated
Mounting Method Stranded 18AWG wire leads (0.933mm2) with mounting bracket; 6 inch wire length
Operating Temperature -20° to 60°C (-4°F to 140°F)
Storage Temperature (F/C) -30° to 85°C (-22°F to 185°F)
Humidity 95% relative non-condensing
Weight (lbs/g) ≅1.2oz (34g)
Sample capable No