Trane TRR1873 Transformer

For veteran HVAC contractors and industrial electricians, the Trane TRR1873 Transformer is a high-capacity power solution engineered for stable voltage regulation in demanding thermal and mechanical environments. This unit features a 120V primary input and a substantial 375VA power rating, providing a consistent 3A secondary output. Its robust construction is specifically designed to handle the inductive loads and inrush current typical of industrial HVACR machinery, ensuring that sensitive control circuits and secondary electronics remain protected against voltage fluctuations.

The TRR1873 OEM replacement (often superseded by TRR01873) is built to rigorous industrial standards, allowing for reliable operation in high-ambient temperature conditions without premature core saturation. Its compact footprint facilitates a straightforward retrofit into existing control panels, maintaining the precise voltage levels required for industrial-grade relays, contactors, and microprocessor-based controllers. When you need a 120V 3A 375VA transformer that withstands the rigors of continuous factory or commercial operation, this Trane component provides the electrical integrity necessary for professional-grade installations.

• High VA Capacity: The 375VA rating allows for the simultaneous powering of multiple low-voltage components without voltage drop.
• Precise Electrical Regulation: Optimized for limited losses during power transformation, enhancing overall control circuit efficiency.
• Industrial Durability: Constructed with high-grade windings and insulation to resist vibration and thermal stress in harsh mechanical rooms.
• Standardized Footprint: Designed for rapid mounting in standard industrial electrical enclosures to reduce labor time on-site.

• What is the primary application for this 375VA rating? This unit is typically used in large-scale commercial HVAC systems or industrial machinery where a standard 40VA or 75VA transformer cannot support the total amperage draw of the control circuit.
• Is this an OEM replacement for discontinued Trane parts? Yes, the TRR1873 serves as a direct professional-grade replacement for several superseded Trane and American Standard industrial transformer models.
• How does the 3A output affect secondary circuit protection? With a 3A secondary current, technicians must ensure that secondary side fusing or circuit breakers are sized correctly to match the 375VA limit while protecting the connected equipment.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.