Description
The Rheem-Ruud PD425078 is an OEM sequencing relay engineered for precise, staged control of electric heating elements in Rheem and Ruud heating systems. Designed with a 24-volt coil and a Double-Pole Single-Throw (DPST) Normally Open (N/O) configuration, this relay ensures heating elements are energized in a controlled sequence — reducing electrical demand spikes, extending component life, and delivering consistent, even heat throughout the conditioned space.
Key Features
- OEM Rheem-Ruud replacement part — direct fit for compatible systems
- 24V coil voltage for compatibility with standard low-voltage control circuits
- DPST (Double-Pole Single-Throw) contact configuration
- Normally Open (N/O) contacts — energize on call for heat
- Sequencing design staggers element activation to reduce inrush current
- Supports reliable, long-term operation in electric furnaces and air handlers
- Helps protect system components by preventing simultaneous element startup
Application
This sequencing relay is a direct OEM replacement for Rheem and Ruud electric furnaces and air handlers that require staged heating element control. It is ideal for HVAC technicians performing routine maintenance, warranty repairs, or system restoration on compatible Rheem-Ruud equipment.
Specifications
- SKU / Part Number: PD425078
- Brand: Rheem-Ruud
- Coil Voltage: 24V
- Contact Type: DPST (Double-Pole Single-Throw)
- Contact Position: Normally Open (N/O)
- Function: Heat Sequencing Relay
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