Best 208 to 460 Transformer Options for HVAC and Industrial Use
Choosing the right 208 to 460 transformer ensures your HVAC controls, control boards, and low-voltage components run safely and reliably. Below are five well-regarded options that cover common primary voltages, secondary voltages, and power ratings. This guide highlights core specs, compatibility notes, and practical considerations for American installations.
| Product | Primary/Secondary | VA Rating | Notes |
|---|---|---|---|
| Schneider Electric 50VA | 280/230/460V to 115V | 50 VA | 3PH input |
| LVO 511-5056 | 208/230/460V to 120/24V | 250 VA | Food service style packaging |
| Siemens MT0150A | Primary 240/480 to 120/115/110V | 150 VA | Industrial efficiency |
| FATKITT 40VA | 208/240V to 24V | 40 VA | Direct replacement for common models |
| Trane 75 VA | 460-575V pri to 24V | 75 VA | OEM-grade option |
The selections below present five practical, widely compatible transformers that align with 208–460 V primary inputs and 24–115 V secondary outputs. Each product includes a concise overview of use cases, installation notes, and key features to help you compare at a glance.
Schneider Electric: 50VA Transformer, 208/230/460V To 115VAC
This Schneider Electric unit handles three primary voltages—280V, 230V, and 460V—converting to a stable 115V secondary. With a 50 VA rating, it fits compact control panels and smaller HVAC units. The three-phase input is suitable for commercial environments where multiple feeders are common. Safety features include robust insulation and copper windings designed for reliable performance under load. Installation considerations include ensuring the primary supply matches one of the listed voltages and that the panel has adequate clearance for heat dissipation.
LVO 511-5056 Transformer, 208/230/460 to 120/24V
The LVO transformer supports 208/230/460V primary inputs and delivers 120/24V on the secondary, with a substantial 250 VA rating. Marketed for food service and similar applications, it emphasizes reliability and robust construction. Its dimensions and weight suggest a cabinet-ready footprint for mechanical rooms or equipment racks. Installation notes include confirming the 50/60 Hz rating, proper primary wiring, and secure mounting to reduce vibration. This unit is well-suited for mid-range control loads and legacy equipment expecting 24V control circuits.
Generic: Fits LVO 3516040/702X 208/230/460 to 120/24V, 250VA
This generic option is designed as a compatible replacement for multiple LVO models, providing 208/230/460V to 120/24V at 250 VA. It’s positioned for CL10 and FL10 series equipment, suggesting good compatibility with energy management and control panels widely used in commercial HVAC. As with similar units, verify that the primary voltage aligns with the supply and that the secondary voltage matches the thermostat or control system requirements. The 250 VA rating supports moderate control loads with steady performance.
Functional Devices TR50VA008 Transformer, 50Va
The Functional Devices TR50VA008 provides 50 VA at 480/277/240/208 to 120 VAC. Its compact footprint fits small to mid-size control panels, with mounting options including foot and dual-threaded hub. Country of origin is the United States, which aligns with many U.S. code and safety expectations. When selecting this transformer, ensure the primary is compatible with your facility’s supply and that the 120 VAC secondary will meet the control circuits’ voltage requirements. It offers reliable operation for general-purpose control circuits in commercial equipment.
FATKITT: 40VA 208/240V To 24V Direct Replacement
This FATKITT 40 VA transformer operates on 208/240V primary input to 24V secondary, marketed as a direct replacement for common HVAC control transformers. It emphasizes broad compatibility with models like Goodman Amana 0130M00138S, White-Rodgers, Honeywell, and Robertshaw variants. Features include five clearly identified wires plus wire nuts for safe termination and flexible installation. The device is suited for residential and light commercial systems with modest control loads, offering straightforward replacement without extensive rewiring.
Trane: 75 VA Transformer, 460-575V Pri to 24V
The Trane transformer offers 75 VA with a primary range of 460–575 V and a 24 V secondary, suitable for higher-voltage HVAC control circuits and equipment that require consistent low-voltage signals. Marketed as a genuine OEM part, it emphasizes safety, reliability, and compatibility with Trane systems and other OEM-grade applications. When considering this unit, verify alignment with your equipment’s control voltage requirements and ensure secure mounting to minimize vibration and heat buildup in demanding environments.
Buying Guide
Key considerations when selecting a 208/230/460 V to 24/115 V transformer include voltage compatibility, VA rating, frequency compatibility, and enclosure or mounting options. Primary voltage must match your available mains supply (208/230/460 V), while secondary voltage should align with control circuits (24/115 V are common in HVAC). Higher VA ratings support larger control loads but require space and better cooling. Frequency compatibility (50/60 Hz) is essential for consistent performance in diverse regions.
Other practical factors: enclosure type (open vs. NEMA-rated), insulation class, mounting method, and wiring configuration. OEM-grade transformers (like Trane or Siemens) are designed for unit reliability and easy integration in original equipment, while replacement or generic units can provide cost-effective options when exact OEM parts are unavailable. When replacing, confirm that the new transformer maintains the same secondary voltage, polarity, and the required current rating to prevent control voltage drop or nuisance tripping.
Installation tips: verify secure mounting to dampen vibration, use proper wire gauges for primary and secondary leads, and follow local electrical codes. For units with multiple primary taps, select the correct tap to minimize heat and maximize efficiency. If converting from one primary voltage to another, ensure the wiring configuration is adjusted accordingly and that the control circuits are protected by appropriate fusing or circuit breakers. Finally, consider future needs; a slightly higher VA rating can accommodate upgrades or additional control loads without replacing the transformer again.