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Dayton pressure switch, compact metal body, 1/4 in FNPT port, DPST contacts, NEMA 1 rating

Dayton

Dayton Pressure Switch 30/50 psi DPST 1/4 in FNPT

SKU CH-JDH2-EX7WB

Controls water pumps with automatic 30/50 psi cut-in/cut-out and low-pressure cutoff

  • TypeLight Switch
  • Automatic water-pump control with 30/50 psi factory settings
  • Manual Auto/Off/Reset lever gives direct override
  • DPST contacts handle 1.5 hp at 120 V or 2 hp at 240 V
  • CSA certified and UL listed for code-compliant installs
  • Operates from -22 °F to 250 °F in NEMA 1 enclosures

Dayton 30/50 psi Pressure Switch

The Dayton pressure switch controls water-pump operation with a factory-set 30/50 psi on/off range and a DPST contact form. It suits installers who need a NEMA 1-rated switch for residential or light-commercial well systems. The 1/4 in FNPT port connects directly to standard pump fittings. Manual Auto/Off/Reset action gives the operator full local control.

10–100 psi adjustable range

The switch operates across a 10 to 100 psi range while the differential spans 15 to 50 psi, so cut-in and cut-out points must stay within those limits. It is rated for 1-1/2 hp at 120 V and 2 hp at 240 V single-phase, making it unsuitable for larger motors. CSA and UL listings cover the electrical construction only. The NEMA 1 enclosure is not rated for outdoor or wash-down environments.

Replaces fixed-range or SPST switches

This unit replaces fixed-range or single-pole switches when adjustable cut-in/cut-out and double-pole isolation are required. The jump is worth it when the system demands a wider pressure window or when code calls for DPST disconnect. It does not serve installations needing an unloader valve or a higher NEMA rating.

Highlights

  • Automatic water-pump control with 30/50 psi factory settings
  • Manual Auto/Off/Reset lever gives direct override
  • DPST contacts handle 1.5 hp at 120 V or 2 hp at 240 V
  • CSA certified and UL listed for code-compliant installs
  • Operates from -22 °F to 250 °F in NEMA 1 enclosures

Specifications

BrandDayton
TypeLight Switch

Questions about this item

Should I pick the 30/50 psi setting or a different range for my pump?

This switch is factory-set to turn the pump on at 30 psi and off at 50 psi. The adjustable range spans 10 to 100 psi with a differential of 15 to 50 psi, so you can re-calibrate if your system needs other points.

What does the 1 1/2 hp at 120 V rating mean for my motor?

It means the DPST contacts can directly control a single-phase motor up to 1 1/2 hp at 120 V or 2 hp at 240 V without an external contactor.

How does the 1/4 in FNPT port and NEMA 1 rating limit where I can install it?

The 1/4 in FNPT port threads into standard pump fittings, while the NEMA 1 enclosure is rated for indoor, dry locations only.

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