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Square D 9013FH pressure switch, grey metal housing, two terminals, 1/4 inch port

SQUARE D

SQUARE D 9013FH Pressure Switch 135-175 PSI

SKU CH-TZGN-VHZAN

Controls air-compressor pressure from 135 to 175 psi with a 40 psi differential

  • TypeLight Switch
  • Factory-set 135/175 psi cut-in/out for consistent compressor cycling
  • 40 psi differential prevents rapid short-cycling and motor wear
  • DPST contacts switch both lines for safer motor disconnect
  • Rated 10 A with 1.5 hp at 120 V and 2 hp at 240 V single-phase
  • NEMA 1 enclosure suits indoor compressor installations

Square D 9013FH Pressure Switch

The Square D 9013FH is a DPST pressure switch designed to control electrically driven air compressors. It suits workshops and light industrial sites that need automatic cut-in and cut-out between 135 and 175 psi on single or three-phase supplies up to 480 V.

Factory settings and port configuration

The switch ships calibrated to close at 135 psi and open at 175 psi, giving a fixed 40 psi differential across the adjustable 60 to 200 psi range. A single 1/4 inch FNPS port connects directly to the tank manifold, and the manual Auto/Off lever allows local override without rewiring.

Motor load capacity and limits

Rated for 1.5 hp at 120 V single-phase, 2 hp at 240 V single-phase, 3 hp at 240 V three-phase and 1 hp at 480 V three-phase, it handles typical shop compressors within those ratings. NEMA 1 enclosure restricts use to dry indoor locations, and the absence of an unloader valve means the installer must provide separate pressure relief if required.

Highlights

  • Factory-set 135/175 psi cut-in/out for consistent compressor cycling
  • 40 psi differential prevents rapid short-cycling and motor wear
  • DPST contacts switch both lines for safer motor disconnect
  • Rated 10 A with 1.5 hp at 120 V and 2 hp at 240 V single-phase
  • NEMA 1 enclosure suits indoor compressor installations

Specifications

BrandSquare D
TypeLight Switch

Questions about this item

How often should the contacts on the 9013FH be inspected or replaced?

The DPST contacts carry up to 10 A at the rated voltage. Inspect them during routine compressor maintenance and replace if pitting or excessive wear appears.

What limits continuous operation of the 9013FH first?

The 40 psi differential means the compressor cycles each time pressure drops 40 psi. Frequent cycling under heavy demand is the practical limit.

How hot or noisy does the 9013FH get when the compressor runs all day?

The switch itself generates negligible heat and no audible noise. All heat and sound come from the compressor motor it controls.

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