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Square D 9038AR1 liquid level switch, aluminum body, stainless steel float, open tank mount

SQUARE D

SQUARE D 9038AR1 liquid level switch

SKU CH-D84X-5G3ZC

A liquid-level switch closes on rise to control alternator circuits at up to 600 V and 10 A

  • TypeLight Switch
  • Close-on-rise switching protects equipment from overflow
  • 10 A contact rating handles 600 V AC motor loads
  • NEMA 7 and 9 enclosure rated for hazardous locations
  • Stainless-steel float resists corrosion across -22 °F to 220 °F
  • Aluminium body mounts directly on open tanks

Alternator Liquid Level Switch

The SQUARE D 9038AR1 is an alternator liquid level switch designed for open-tank mounting in industrial and commercial installations. It serves maintenance engineers and facility managers who need reliable level detection for conductive liquids.

Sustained Operation Under Load

Rated at 10 A and 460 V AC, the DPST-4NC contacts close on rise to provide consistent switching during continuous pump or motor duty. The aluminium body and stainless-steel float withstand temperatures from -22 °F to 220 °F while maintaining NEMA 7 and 9 enclosure integrity.

Replaces Basic Float Switches

This unit upgrades from simple single-pole switches when a DPST contact form and higher horsepower ratings are required — 2 hp at 120 V, 3 hp at 240 V single-phase and 5 hp at 240 V three-phase. It is not suited for sealed-tank applications or installations needing a close-on-fall contact action.

Highlights

  • Close-on-rise switching protects equipment from overflow
  • 10 A contact rating handles 600 V AC motor loads
  • NEMA 7 and 9 enclosure rated for hazardous locations
  • Stainless-steel float resists corrosion across -22 °F to 220 °F
  • Aluminium body mounts directly on open tanks

Specifications

TypeLight Switch
BrandSquare D

Questions about this item

How much heat does the 9038AR1 generate when it runs continuously at 10 A and 460 V AC?

The switch is rated for a maximum operating temperature of 220 °F, so continuous operation within its 10 A, 460 V AC rating will not exceed that limit.

What tank opening and mounting hardware are needed to install the 11.88 in long float assembly?

The unit requires an open-tank mount with a 1 1/4 in float travel clearance; the 7 in diameter stainless-steel float passes through the opening and the aluminum body secures to the tank flange.

Will the 9038AR1 work with a 240 V single-phase motor rated at 3 hp that I already have?

Yes, the switch carries a 3 hp rating at 240 V single-phase, matching your motor's nameplate.

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