Description
The Trane TRR1873 is a purpose-built control transformer designed to deliver stable, consistent power to HVAC control circuits in Trane commercial and residential systems. Rated at 375VA with a 120V primary and 3A output, this transformer provides the dependable electrical performance that demanding HVAC applications require.
As an OEM Trane replacement part, the TRR1873 ensures a precise fit and function, eliminating compatibility guesswork and minimizing system downtime during service or repair.
Key Specifications
- Brand: Trane
- Part Number: TRR1873
- Primary Voltage: 120V
- Current Rating: 3A
- VA Rating: 375VA
- Application: HVAC control circuit power supply
Features & Benefits
- OEM Trane replacement part for guaranteed compatibility
- 375VA capacity supports a wide range of HVAC control loads
- 120V primary voltage suits standard commercial and residential electrical supplies
- Engineered for long-term reliability in demanding HVAC environments
- Helps restore system operation quickly during service calls
Applications
- Trane commercial rooftop units
- Trane air handling units
- Trane chiller and packaged system control panels
- General HVAC control circuit transformer replacement where specs match







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