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SQUARE D

SQUARE D Liquid Level Switch 2-1/2 in MNPT Close on Rise Stainless Steel

SKU CH-31Z8-MX2D8

Stainless-steel float switch closes on rising liquid, side-mounts via 2-1/2 in MNPT with 4-1/2 in travel, NEMA 4 rated to 50 psi and 220 °F

  • TypeLight Switch
  • Reliable tank monitoring with DPST close-on-rise contact form
  • Durable stainless steel float and stem resist corrosion
  • NEMA 4 enclosure protects against dust and water ingress
  • Wide operating range from -22 °F to 220 °F
  • Handles up to 600 A for demanding applications

Liquid Level Switch — Stainless Steel Construction

The Square D liquid level switch monitors tank levels and closes the circuit when the float rises. It mounts through a 2-1/2 in MNPT side connection and uses a stainless steel float and stem rated for NEMA 4 environments. The unit operates from -22 to 220 degrees F at up to 50 psi.

Check Tank Opening and Electrical Rating

Verify the tank has a 2-1/2 in MNPT threaded port on the side for mounting. Confirm the process temperature stays within the -22 to 220 degrees F range and pressure does not exceed 50 psi. Ensure the control circuit voltage and current are compatible with the DPST contacts rated at 600 A maximum.

Suits Simple High-Low Alarm or Pump Control

This switch fits applications needing a single close-on-rise signal such as high-level alarms or pump-down control. It does not suit systems that require open-on-rise action, multiple switch points, or top-mount installation. Buyers needing adjustable differential or different contact forms should look at other configurations.

Highlights

  • Reliable tank monitoring with DPST close-on-rise contact form
  • Durable stainless steel float and stem resist corrosion
  • NEMA 4 enclosure protects against dust and water ingress
  • Wide operating range from -22 °F to 220 °F
  • Handles up to 600 A for demanding applications

Specifications

BrandSquare D
TypeLight Switch

Questions about this item

Does the liquid level switch include any mounting hardware or gaskets, or must they be purchased separately?

The switch is supplied as the complete unit with a 2-1/2 in MNPT tank connection, stainless steel stem and float; separate gaskets or mounting brackets are not included in the package.

Should I choose a different float rod angle or travel length for my tank depth?

This model has a fixed 90-degree float rod angle and 4 1/2 in float travel; other angles or travel lengths are not available on this specific part.

What does the 600 A contact rating mean for the pump or relay I want to control?

The DPST contacts are rated for up to 600 A, so the switch can directly handle heavy motor loads or large contactor coils within the 50 psi and -22 to 220 °F operating limits.

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