Hunter Industries - PSR22 - Pump Start Relay

Brand: Hunter Industries    SKU: PSR22

Product Overview

The Hunter PSR-22 is a double-pole, single-throw pump start relay that allows a compatible 24 VAC irrigation controller or supported decoder system to activate an external irrigation pump. The Big Frog Supply SKU is stored as PSR22. When the controller energizes the relay’s 24 VAC coil, the contactor switches the separate pump power circuit, keeping the pump’s high-voltage load away from the controller output.

Hunter lists the PSR-22 for single-phase pumps up to approximately 2 HP at 120 VAC or 3 HP at 230 VAC, with a maximum full-load rating of 30 amps and maximum resistive rating of 40 amps. Pump horsepower alone is not sufficient for selection: confirm voltage, phase, motor nameplate full-load current, starting current, controller output, conductor size, disconnecting means, and local electrical requirements.

The outdoor enclosure includes 24 VAC flying leads for the controller connection and multiple conduit knockouts for field wiring. Hunter recommends mounting the relay at least 15 feet from the irrigation controller to reduce the possibility of electrical noise reaching the controller through the low-voltage wiring.

Key Features

• Double-pole, single-throw pump start relay
• 24 VAC controller coil with flying leads
• For compatible 120 VAC pumps up to approximately 2 HP
• For compatible 230 VAC single-phase pumps up to approximately 3 HP
• Maximum full-load rating of 30 amps
• Maximum resistive rating of 40 amps
• Suitable for supported conventional or two-wire decoder activation
• Outdoor-rated IP44 enclosure

Common Uses

• Starting an irrigation well pump from a controller
• Operating a booster pump during scheduled watering
• Pond, creek, or cistern-fed irrigation systems
• Replacing a matching Hunter PSR-22 relay

Compatibility and Installation Notes

• Verify pump voltage, phase, horsepower, full-load current, and starting current before selection.
• Confirm the irrigation controller or decoder output is compatible with the 24 VAC relay coil.
• Mount at least 15 feet from the irrigation controller unless the current Hunter instructions specify otherwise for the installation.
• Do not connect a pump motor directly to the irrigation controller.
• High-voltage wiring and relay installation should be completed by a licensed electrician in accordance with applicable codes.

Frequently Asked Questions

Does the PSR-22 power the pump?

No. It switches the separate pump power circuit when its 24 VAC coil is energized by the irrigation control system.

Can it operate a three-phase pump?

No three-phase horsepower rating is published for PSR-22. Use a properly rated relay or motor-control solution for the pump.

Is horsepower the only sizing requirement?

No. Voltage, phase, full-load amps, starting current, conductor sizing, and applicable electrical codes must also be confirmed.

Why Buy from Big Frog Supply?

Big Frog Supply carries Hunter pump start relays, irrigation controllers, decoder accessories, sensors, valves, and pump-system control components.