Brand: K-Rain SKU: 1522
Product Overview
The K-Rain 1522 is a pump start relay for irrigation controllers that provide a compatible 24 VAC pump-start or master-valve signal. Its low-voltage coil allows the controller to energize the relay, while the relay's double-pole contacts switch the separate line-voltage circuit that powers the pump.
K-Rain rates the 1522 for compatible pump loads up to 3 horsepower at 120 VAC or 240 VAC. The relay has a 24 VAC, 60 Hz coil, double-pole single-throw contacts, a 20-amp inductive rating, and a 30-amp resistive rating. The pump's supply voltage does not come from the controller; the controller only energizes the relay coil.
The Type 3R rainproof enclosure provides an accessible location for separating low-voltage control wiring from the pump circuit. Before ordering, verify that the controller can support the relay's coil inrush and sealed load, especially when long wire runs or undersized conductors are involved. Also confirm pump phase, horsepower, voltage, motor current, starting characteristics, grounding, disconnects, and protective devices. Installation involves line voltage and must follow the current K-Rain instructions and applicable electrical codes.
Key Features
- 24 VAC, 60 Hz control coil
- Double-pole, single-throw contacts
- Compatible pump rating up to 3 HP at 120 or 240 VAC
- 20-amp inductive and 30-amp resistive contact ratings
- Rainproof Type 3R enclosure
- Designed for compatible irrigation-controller pump-start outputs
Common Uses
- Starting a pump from a compatible 24 VAC controller output
- Keeping motor current out of the irrigation controller
- Replacing an exact K-Rain 1522 relay
Compatibility and Installation Notes
- Confirm the controller output is 24 VAC and can energize the relay coil.
- Verify pump load remains within horsepower and current ratings.
- This is a single-phase double-pole relay, not a three-phase model.
- Use properly sized copper conductors and required grounding methods.
- Disconnect controller and pump power before installation.
Frequently Asked Questions
Is the 1522 the correct model for a normal 24V pump-start terminal?
It is designed with a 24 VAC coil, but the controller's available output and the complete installation must still be verified.
Does 24V power the pump?
No. The 24 VAC signal energizes the coil. The relay contacts switch the pump's separate 120V or 240V supply.
What is the difference between 1521 and 1522?
The 1521 uses a 120 VAC coil; the 1522 uses a 24 VAC coil. Their pump-load ratings are otherwise similar.
Why Buy This K-Rain 1522 from Big Frog Supply?
Big Frog Supply identifies both the 24V control-coil requirement and the 3 HP pump limit, making it easier to match the relay to the controller output and avoid confusing control voltage with pump voltage.
Product Type Pump start relay
Manufacturer Part Number 1522
Control Coil 24 VAC, 60 Hz
Contact Configuration Double pole, single throw
Pump Load Rating Up to 3 HP at 120 VAC; up to 3 HP at 240 VAC
Inductive Contact Rating 20 A
Resistive Contact Rating 30 A
Coil Inrush 35 VA
Coil Sealed 7 VA, 3 W
Enclosure Type 3R rainproof
Three-Phase Operation No
