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Black Square D pressure switch with piston actuation and 1/4 inch FNPT port

SQUARE D

SQUARE D 9012G Pressure Switch 90-2900 PSI

SKU CH-4VCF-B25TA

Adjustable pressure switch covers 90 to 2900 psi with 141 to 455 psi differential and NEMA 1 rating

  • Product typeLight Switch
  • Color and finishBlack
  • Adjustable 90-2900 PSI range covers diverse pressure needs
  • Piston actuation delivers reliable switching across 141-455 PSI differential
  • NEMA 1 enclosure protects contacts in indoor environments
  • 3 A at 240 V AC rating handles standard control circuits
  • Wide -40 to 250 °F media temperature suits harsh fluid conditions

Pressure Switch 90-2900 PSI

The Square D 9012G is a piston-actuated pressure switch with an adjustable range of 90 to 2900 psi and a differential of 141 to 455 psi. It carries a NEMA 1 enclosure rating and a 1/4-18 FNPT port. The unit is built for industrial control circuits that need reliable on-off switching at high pressures.

Upgrade from Fixed-Range Switches

This model replaces non-adjustable or lower-range switches when the application demands a wider set-point window or a specific differential. The jump is worth it when the system must operate reliably between -10 and 185 degrees F ambient and media temperatures up to 250 degrees F.

Sustained Load Behaviour

Under continuous cycling the contacts are rated for 3 A at 240 V AC and 0.22 A at 125 V DC or 0.27 A at 250 V DC. The piston actuation and standard action maintain consistent trip points without drift during prolonged operation at the rated pressure and temperature limits.

How it compares

Measured against everything we stock in Electrical Switches & Dimmers, at today’s prices. Recalculated every night.

Price $550.99
Pricier than about 93% of the 791 comparable items (median $39.99).

Specifications

Product
Brand nameSquare D
Product typeLight Switch
Color and finishBlack

Questions about this item

What size port fitting does the 9012G pressure switch require?

The switch uses a 1/4-18 FNPT port, so a matching 1/4 inch NPT male fitting is needed for connection.

Which wiring step is most often missed when installing the 9012G switch?

Connecting both the normally open and normally closed contacts in the 1NO/1NC configuration is the step most frequently overlooked.

How often should the piston seal be checked on a 9012G switch running near 2900 psi?

Inspect the piston seal annually when operating at the upper pressure range, as high-cycle use at 2900 psi accelerates wear.

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