MCDONNELL & MILLER General Purpose Switch: Paddle, 1 in/6 in For Pipe Size
The McDonnell & Miller FS251 is a general-purpose, insertion-style paddle switch for liquids, designed for use with a 6-inch pipe size. It features a brass body with a 1-inch NPT connection and an AC contact rating…
SKU 3G-OTH-93528
Also listed as: FS 251 · FS-251
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The McDonnell & Miller FS251 is a general-purpose, insertion-style paddle switch for liquids, designed for use with a 6-inch pipe size. It features a brass body with a 1-inch NPT connection and an AC contact rating of 44.4 A at 120V (locked rotor). This switch is suitable for liquid level detection in industrial applications.
Frequently Asked Questions
What is the McDonnell & Miller FS251 used for?
The McDonnell & Miller FS251 is an insertion-style paddle switch for liquid level detection in industrial piping systems. It is designed for 6-inch pipe sizes and triggers an electrical signal when liquid flow or level changes, commonly used in HVAC, boiler, and process control applications.
What are the specifications of the McDonnell & Miller FS251?
The FS251 has a brass body with a 1-inch NPT connection, fits 6-inch pipe, and carries a locked-rotor AC contact rating of 44.4 A at 120V. It is a general-purpose paddle switch for liquids, manufactured by McDonnell & Miller under MPN FS251.
Where to buy the McDonnell & Miller FS251 worldwide?
3G Electric supplies the McDonnell & Miller FS251 worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this insertion-style switch to any country.
How to install the McDonnell & Miller FS251 paddle switch?
Install the FS251 by threading the 1-inch NPT brass body into a compatible fitting on a 6-inch pipe. Ensure the paddle is oriented correctly for flow direction. Follow standard electrical safety practices for wiring the 44.4 A contact rating. Consult the manufacturer's manual for torque and positioning details.
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Common applications for McDonnell & MillerMcDonnell & Miller Products
3G Electric supplies McDonnell & Miller insertion-style switches for liquids. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
