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Square D 9013FH pressure switch, grey metal housing, four ports, unloader valve visible

SQUARE D

SQUARE D 9013FH Pressure Switch 95-125 PSI 4 Port Unload

SKU CH-4JVC-QFTZW

Controls air-compressor pressure between 95 and 125 psi with a 30 psi differential and four 1/4-inch ports

  • TypeLight Switch
  • Factory-set 95–125 psi cut-in/cut-out for consistent compressor cycling
  • 30 psi differential keeps motor starts smooth and predictable
  • Four ¼ in FNPS ports plus unloader valve simplify plumbing
  • DPST contacts rated 2 hp at 120 V and 5 hp at 240 V three-phase
  • NEMA 1 enclosure suits indoor workshop environments

Pressure Switch for Air Compressors

This Square D 9013FH pressure switch controls air compressors with a factory-set cut-in of 95 psi and cut-out of 125 psi. It handles single-phase motors up to 2 hp at 120 V or 3 hp at 240 V, and three-phase motors up to 5 hp at 240 V or 1 hp at 480 V. The unit is rated NEMA 1 for indoor use.

Four-Port Installation with Unloader

The switch provides four 1/4 in FNPS ports and includes a built-in unloader valve for automatic pressure release. Wiring uses a DPST contact form with standard action. No pilot or additional control components are supplied, so installers must provide their own fittings and conduit.

Pressure Range and Differential Limits

The adjustable operating range spans 40 to 150 psi with a fixed 30 psi differential between cut-in and cut-out. Settings outside this window are not supported. The NEMA 1 enclosure does not protect against water, dust or corrosive atmospheres, limiting use to clean, dry indoor locations.

Highlights

  • Factory-set 95–125 psi cut-in/cut-out for consistent compressor cycling
  • 30 psi differential keeps motor starts smooth and predictable
  • Four ¼ in FNPS ports plus unloader valve simplify plumbing
  • DPST contacts rated 2 hp at 120 V and 5 hp at 240 V three-phase
  • NEMA 1 enclosure suits indoor workshop environments

Specifications

BrandSquare D
TypeLight Switch

Questions about this item

How can I verify the 9013FH pressure switch is operating correctly after installation?

Watch the compressor cycle: it should start at 95 psi and stop at 125 psi, giving a 30 psi differential, and the unloader valve must vent air briefly each time the motor stops.

What components are included with the 9013FH switch and what must I supply separately?

The switch body with four 1/4 in FNPT ports and integral unloader valve is included; you must provide 1/4 in compression fittings, tubing, wiring rated for the motor voltage, and a suitable NEMA 1 enclosure if not already mounted.

Which voltage and phase rating should I select for a 2 hp single-phase motor?

Choose the 120 V single-phase rating, which supports up to 2 hp; for 240 V single-phase the limit is 3 hp, and three-phase ratings are 5 hp at 240 V or 1 hp at 480 V.

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