Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

MADISON Alternator Closed Liquid Level Switch: Selectable, SPDT - Mechanically Alternating Side-Mounted Float Switches
MADISONMechanically Alternating Side-Mounted Float Switches

MADISON Alternator Closed Liquid Level Switch: Selectable, SPDT

The MADISON Alternator Closed Liquid Level Switch: Selectable (MPN M4190-BU) is a mechanically alternating side-mounted float switch with SPDT contacts and a 304 Stainless Steel construction. It features Lead Wires…

SKU 3G-OTH-130176

Also listed as: M4190BU · M4190 BU

Brand
MADISON
Item
Alternator Closed Liquid Level Switch: Selectable, SPDT
Category
Mechanically Alternating Side-Mounted Float Switches
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MADISON
Manufacturer Part Number
M4190-BU
Type
SPDT
Stainless Steel
304

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MADISON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MADISON Alternator Closed Liquid Level Switch: Selectable (MPN M4190-BU) is a mechanically alternating side-mounted float switch with SPDT contacts and a 304 Stainless Steel construction. It features Lead Wires termination and a specific gravity rating of 0.56.

Frequently Asked Questions

What is the MADISON Alternator Closed Liquid Level Switch used for?

The MADISON Alternator Closed Liquid Level Switch (MPN M4190-BU) is used for mechanically alternating level control in industrial tanks and vessels. It provides SPDT switching to alternate pump or valve operation, preventing single-point failure in liquid handling systems.

What are the specifications of the MADISON M4190-BU liquid level switch?

The MADISON M4190-BU is a side-mounted float switch with 304 Stainless Steel construction, SPDT contacts, and Lead Wires termination. It has a specific gravity rating of 0.56 and is designed for mechanically alternating operation. The manufacturer is MADISON.

Where to buy the MADISON M4190-BU liquid level switch worldwide?

You can source the MADISON M4190-BU liquid level switch through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.

How to install a side-mounted float switch like the MADISON M4190-BU?

Install the MADISON M4190-BU by mounting it horizontally through a tank sidewall opening, ensuring the float moves freely. Wire the SPDT contacts according to your control circuit. Verify the specific gravity of the liquid matches the 0.56 rating for proper float operation.

Used in

Common applications for MADISON
Industrial tank level monitoring — MADISON M4400-ULL-NO vertically mounted float switch for high-level alarm in water storage tanks
Pump control in wastewater systems — MADISON M4168-1 side-mounted float switch for automatic pump start/stop in sump pits
Hydraulic system flow verification — MADISON FS8000-20003 piston flow switch for detecting flow in lubrication lines
Chemical processing level sensing — MADISON M3827-3NO stainless steel float switch for corrosive liquid level detection
Non-contact level measurement in bulk storage — MADISON U5098-D024-019 ultrasonic sensor for tank level monitoring up to 19 ft
Cooling water flow monitoring — MADISON FS8000-10010 compact flow switch for verifying coolant flow in heat exchangers

MADISON Products

3G Electric supplies MADISON mechanically alternating side-mounted float switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
MADISON Alternator Closed Liquid Level Switch: Selectable, SPDT, 304 Stainless Steel (MPN M4190)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPDT, 304 Stainless Steel (MPN M4190)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPDT, 304 Stainless Steel (MPN M4190-HP)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPDT, 304 Stainless Steel (MPN M4190-HP)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M4065)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M4065)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M5602-7808-1)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M5602-7808-1)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M5602-7808-6)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M5602-7808-6)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, 316 Stainless Steel (MPN MS5010)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, 316 Stainless Steel (MPN MS5010)

More from MADISON

View all MADISON parts
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Kynar (MPN M9700)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Kynar (MPN M9700)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M4169-3)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M4169-3)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, PBT (MPN M7700)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, PBT (MPN M7700)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M5010)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M5010)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Polypropylene (MPN M8000B)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Polypropylene (MPN M8000B)
MADISON Alternator Closed Liquid Level Switch: Open On Rise, SPST, Polypropylene (MPN M8000-ULL-NC)
MADISON
MADISON Alternator Closed Liquid Level Switch: Open On Rise, SPST, Polypropylene (MPN M8000-ULL-NC)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN MS8010)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN MS8010)
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M5920)
MADISON
MADISON Alternator Closed Liquid Level Switch: Selectable, SPST, Stainless Steel (MPN M5920)