Trane TRR0664 Transformer

The Trane TRR0664 Transformer is a heavy-duty 350VA industrial control transformer specifically engineered for high-demand commercial HVACR applications. This multi-tap primary transformer manages broad input ranges, accepting 460V or 575V primary voltage and precisely stepping it down to 115V or 230V secondary voltage. Designed for Trane rooftop units, commercial air handlers, and packaged systems, the TRR0664 provides the stable current necessary for sensitive control boards, contactors, and high-amperage relays. As a genuine OEM HVAC transformer, it eliminates the issues associated with generic step-down units, ensuring internal circuitry remains protected against voltage fluctuations. This open style enclosure unit is optimized for HVAC voltage conversion in high-voltage three-phase environments where reliability is non-negotiable for system uptime. Technical professionals rely on this Trane replacement part for its exact footprint and industrial-grade winding insulation, which handles the heat loads of continuous-duty commercial equipment.

• Versatile Power Configurations: Dual-primary (460/575V) and dual-secondary (115/230V) taps allow for flexible field wiring in various industrial settings.
• High Power Capacity: The 350VA rating provides a significant safety margin for powering multiple controls and auxiliary components without overheating.
• Precise OEM Specifications: Maintains the exact electrical characteristics of the original equipment to prevent diagnostic errors in microprocessor-controlled systems.
• Durability: Built with high-quality copper windings and robust laminations to withstand the vibration and thermal cycling common in RTU installations.

• Can I use this to replace a lower VA rated transformer? Yes, you can generally replace a lower VA unit (like a 150VA or 250VA) with the 350VA TRR0664, provided the physical dimensions and voltage taps align.
• Which terminals should be used for 460V input? Always refer to the wiring diagram on the nameplate; typically, specific multi-tap primary terminals are designated for 460V versus 575V operation.
• Is this transformer suitable for outdoor installation? While designed for use in HVAC equipment, it features an open enclosure and must be housed within a NEMA-rated electrical cabinet or the unit's control box.

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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.