-
Best Seller
SKU:WD400-025
Durastill Float Microswitch (WD400-025) – OEM Auto-Fill Level Sensor Switch
Durastill Float Microswitch (WD400-025) – OEM Auto-Fill Level Sensor Switch
This OEM Durastill float microswitch restores accurate water-level sensing for automatic distillers, preventing overfill, no-fill, and unexpected shutdown issues.
Couldn't load pickup availability
Quick Shipping To Continental US
24/6 Support
Made in U.S.A
- ✓ Restores accurate water-level control
- ✓ Prevents overflows and no-fill conditions
- ✓ OEM precision sensor switch
Specifications
Specifications
Part #: WD400-025
Compatibility: Durastill 30 & 46 Series
Function: Auto-fill level microswitch
When repairing take a picture fo previous wiring so that when you install new switch wire go to the correct terminals.
Shipping Time
Shipping Time
This item typically ships in 1-2 business days after ordered via USPS. Average transit time is 3-4 business days from our Minnesota location to the continental United States.
Care Instructions
Care Instructions
Taking care of your distiller involves showing love to it by replacing filters regularly and cleaning the boiling chamber.
Check Out Our Video on Maintaining the Boiling Tank of A Water Distiller

Frequently Asked Questions
How do I know my microswitch is failing?
Erratic filling behavior, failure to shut off, or the unit not starting are common signs.
Is this an OEM part?
Yes — this is a factory-certified Durastill replacement microswitch.
Is installation safe to DIY?
Installation requires basic electrical skills. Many customers install it themselves, though professional service is recommended if you’re unsure. You can alwasy call our nation-wide service center at 612-701-7820 for assistance.


