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Stainless steel liquid level switch with 1/2" x 1/4" NPT connections, 5-inch stem and float

Madison

Madison Liquid Level Switch 1/2" x 1/4" NPT Selectable SS

SKU CH-G6ZQ-WY4FE

A selectable stainless-steel liquid-level switch with 1/2" x 1/4" NPT connections, 300 psi rating and 392 °F maximum temperature

  • Size/Dimensions1/2" x 1/4" NPT
  • TypeLight Switch
  • Selectable switch function adapts to open or closed tank logic
  • Stainless steel float and stem resist corrosion in harsh fluids
  • Rated for 300 psi and 392 °F max operating temperature
  • Compact 5 in overall length fits tight side-mount installations
  • SPST contact handles 0.28 A at 240 V for reliable signalling

Alternator Liquid Level Switch

The Madison switch monitors coolant or oil level in alternator systems using a side-mounted stainless-steel float. A selectable function lets the installer choose normally-open or normally-closed operation for the SPST contact. Rated for 240 V and 0.28 A, it suits low-voltage control circuits in industrial and heavy-duty automotive applications.

1/2 x 1/4 NPT Tank Connection

The 1/2 in x 1/4 in NPT fitting threads directly into a matching tank port without adapters. A 1/2 in conduit entry protects the wiring run. The 5 in overall length and 0.75 in float length keep the profile compact for tight engine compartments. Stainless-steel body, stem and float resist corrosion from coolant additives and oil.

Sustained High-Temperature Operation

The assembly withstands continuous exposure up to 392 degrees F and 300 psi without seal degradation. The 30 VA contact rating remains stable during prolonged duty cycles, avoiding the drift seen in snap-action switches that heat internally. Stainless construction eliminates plastic fatigue that can cause false trips after thousands of thermal cycles.

Highlights

  • Selectable switch function adapts to open or closed tank logic
  • Stainless steel float and stem resist corrosion in harsh fluids
  • Rated for 300 psi and 392 °F max operating temperature
  • Compact 5 in overall length fits tight side-mount installations
  • SPST contact handles 0.28 A at 240 V for reliable signalling

Specifications

BrandMadison
Size/Dimensions1/2" x 1/4" NPT
TypeLight Switch

Questions about this item

At what temperature does the switch reach its operating limit?

The stainless-steel switch is rated for a maximum operating temperature of 392 Degrees F.

How much power does the switch draw when it runs continuously?

With a 30 VA rating and 0.28 A maximum current at 240 V, power consumption stays very low during all-day operation.

What size NPT fitting must the tank already have for this switch to install?

The tank needs a 1/2 in x 1/4 in NPT connection to match the switch's side-mount conduit size.

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