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

SQUARE D

SQUARE D 9013FH Pressure Switch 80-100 PSI

SKU CH-P39M-CMV21

Air compressor pressure switch with 80 to 100 psi factory settings and 20 psi differential

  • TypeLight Switch
  • Controls compressor at 80–100 psi cut-in/cut-out
  • Handles 1½ hp at 120 V single-phase
  • Supports 2 hp at 240 V single-phase
  • Rated for 3 hp at 240 V three-phase
  • DPST contacts switch both lines safely

Purpose and audience

This Square D 9013FH pressure switch controls an air compressor automatically between 80 and 100 psi. It suits workshops and job sites that need reliable on/off cycling for single-port systems. The DPST contact form handles up to 10 A across 120 V, 240 V and 480 V supplies. It is not for installations that require an unloader valve or a different pressure range.

Thermals noise and power

The switch carries motor loads of 1½ 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. A fixed 20 psi differential prevents short-cycling and keeps compressor run times steady. NEMA 1 rating means the enclosure is intended for indoor, dry locations only. No fan or active cooling is involved, so acoustic output is negligible.

Build integration

The single ¼ in FNPS port threads directly into the compressor tank or manifold. Standard action and no unloader simplify wiring to a basic DPST circuit. The 80/100 psi factory setting works with compressors rated within the 20–100 psi range. Builders needing adjustable differential, external unloader ports or outdoor-rated enclosures should look elsewhere.

Highlights

  • Controls compressor at 80–100 psi cut-in/cut-out
  • Handles 1½ hp at 120 V single-phase
  • Supports 2 hp at 240 V single-phase
  • Rated for 3 hp at 240 V three-phase
  • DPST contacts switch both lines safely

Specifications

BrandSquare D
TypeLight Switch

Questions about this item

How do I install the 9013FH pressure switch and what step is commonly missed?

Thread the 1/4 in FNPS port onto the compressor tank using thread sealant, wire the DPST contacts to the motor circuit matching the voltage (120 V, 240 V or 480 V), then verify the factory 80/100 psi settings — the step often missed is confirming the 20 psi differential before powering up.

What maintenance or replacement will the 9013FH switch need over time?

The NEMA 1 enclosure and DPST contacts are rated for standard duty; expect to replace the switch if contacts wear from frequent cycling at 10 A or if the 20 psi differential drifts beyond the 20–100 psi range.

What limit appears first when the 9013FH runs continuously under load?

The 10 A contact rating and 1½ hp (120 V) / 2 hp (240 V) / 3 hp (240 V three-phase) / 1 hp (480 V three-phase) motor limits define the maximum sustained load before contact overheating occurs.

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