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Enquiry

What it is: A small snap-action electrical switch (microswitch) used in various machines to detect position or turn things ON/OFF when a lever/button is pressed.
Where used:
Door/cover sensors in vacuum cleaners, washers etc.
Trigger or safety switches in spray guns / pressure washers.
Control panels / push-buttons.
Arcade machines (buttons / joysticks) also use D44 type.
Key functions:
Detect when a mechanical part moves or is pressed.
Enable or disable power/signal as needed.
Provide reliable, repeated switching (click on/off) with small movement.
Important specs:
Rated current: 10A, 250 VAC for AC use; also works at lower DC ratings.
Mechanical life: Many millions of operations (e.g. ~ 10 million) for good quality ones.
Operating / actuation force: Standard ~ 75 grams (force needed to press the switch) for some D44X variants.
Terminal types: Blade / quick-connect blades (.187", etc.), PCB mounting, etc.
When to use/replace:
If the switch no longer clicks or stops working reliably.
If electrical connections are loose or burned.
If movement is stiff, or contacts are corroded.

Micro Switch D44