Rheem PD425120 Sequencing Relay, 24 Volt, 3PST, Normally Open, 10-18 Amp Steady State

Overview

The Rheem PD425120 is a 3-pole sequencing relay designed for reliable sequential switching in heating system applications. Operating on a 24-volt control circuit, this relay provides precise, staged operation to help manage electrical loads efficiently.

Electrical Specifications

• Coil Voltage: 24 Volt
• Pole Configuration: 3PST (3-Pole Single Throw)
• Contact Position: Normally Open
• Steady State Amperage: 10–18 Amp

Key Features

• 3-Pole Single Throw (3PST) configuration for multi-circuit control in a single relay
• Normally Open contacts ensure the circuit remains open until the relay is energized, providing a safe default state
• 24-Volt coil compatible with standard low-voltage HVAC control systems
• 10–18 Amp steady state rating suitable for handling the electrical demands of heating elements and similar loads
• Designed as a sequencing relay to stage heating elements, reducing demand spikes and protecting system components

Application

This Rheem sequencing relay is engineered for use in electric heating systems where staged activation of heating elements is required. By sequencing the elements rather than energizing them simultaneously, the relay helps reduce inrush current and improves overall system efficiency. It is ideal for use as a direct Rheem replacement part, ensuring compatibility and reliable performance.

Compatibility

This relay is a genuine Rheem part (PD425120), designed for integration with Rheem heating systems requiring a 24-volt, 3PST normally open sequencing relay with a steady state rating between 10 and 18 amps. Always verify compatibility with your specific model before installation.