Trane Power Relay RLY03346

Trane RLY03346 Power Relay | 50A, 24V Coil, DPST

Restore high-capacity electrical control to your system with the genuine Trane RLY03346 Power Relay. This heavy-duty OEM replacement is engineered specifically for Trane and American Standard units that require robust switching for high-amperage components like compressors and heating elements. With a massive 50 Amp rating and a reliable 24V control coil, the Trane RLY03346 is the professional choice for maintaining factory-spec safety and performance.

As a Service First OEM component, this relay features a Double Pole Single Throw (DPST) configuration, providing simultaneous switching for two power legs—essential for 208-230V applications.

Technical Specifications:

  • Model/Part Number: RLY03346
  • Manufacturer: Tyco Electronics (Potter & Brumfield)
  • Model #: PRD-7AF3-24
  • Configuration: DPST-NO (Double Pole Single Throw, Normally Open)
  • Coil Voltage: 24 VAC
  • Switching Capacity: 50 Amps @ 277 VAC
  • Frequency: 50/60 Hz
  • Type: Power Pole / Heavy-Duty Start Relay

Key Features & Benefits:

  • OEM Precision Engineering: Unlike universal contactors, the Trane RLY03346 is a direct factory part, ensuring the correct footprint and terminal layout for a "drop-in" installation without modifying your wiring.
  • Industrial-Strength switching: Rated for 50 Amps, this relay provides the extra muscle needed for large-tonnage residential and light commercial equipment, preventing the premature contact pitting common in lower-rated universal parts.
  • Double Pole Switching: Simultaneously manages both legs of a 230V circuit, providing clean power engagement for heavy inductive loads like motors and compressors.
  • Built for Longevity: Constructed by Tyco Electronics to withstand high-cycle operations in demanding HVAC environments, ensuring long-term reliability.

Compatibility & Cross-Reference

The RLY03346 is the official modern replacement for a wide list of discontinued and obsolete Trane and American Standard part numbers. It is a verified direct fit for:

  • Legacy Part Numbers: RLY01037, CTR00503, CTR00504, CTR00590, CTR00696, and CTR00811.
  • Additional Supersessions: CTR00574, CTR00902, CTR00915, CTR00937, CTR00993, CTR01007, and RLY01114.
  • Applications: Used in Packaged Units, RTUs, Heat Pumps, and Central Air Conditioners.

Why Buy From Shortys HVAC Supplies?

At Shortys HVAC, we offer Original Equipment Manufacturer (OEM) parts to ensure your repair meets strict factory safety standards. By choosing the Trane RLY03346, you are getting a component tested and approved by Trane engineers for your specific model.

$196.00

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  • Model: RLY03346
  • Manufactured by: Trane
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