Vertiv XFMR24 3-Phase External Power Supply/Transformer — External Transformer | UPS Accessory

Adapt and protect your UPS investment by placing the transformer function outside the UPS cabinet. XFMR24 is an external 3-phase power supply/transformer accessory for Vertiv UPS installations that require site-specific voltage adaptation or electrical isolation. Installing XFMR24 offloads transformer heat and maintenance from the UPS enclosure, simplifies thermal management in dense cabinets and allows transformer servicing without exposing the UPS internals. For designs that must meet separation requirements or where a central transformer bank streamlines distribution, XFMR24 enables clean interfacing between site mains and UPS input stages. The accessory supports staged deployments: add external transformer capacity as loads increase without reconfiguring the UPS. For procurement, XFMR24 represents lower long-term operational friction—service technicians work on the transformer assembly rather than the UPS core, minimizing risks and preserving warranty conditions. Specify XFMR24 when site voltage profiles, isolation constraints or service logistics make external transformer mounting the safer, more maintainable choice.