Miller XMT 6-Pack Inverter Rack (Empty Frame)

Technical Specifications: Miller XMT Inverter Rack (Empty)

The Miller 195466 is a specialized empty rack frame designed to accommodate Miller's XMT series inverters for multi-arc welding applications. This unit provides the structural and electrical distribution framework required to gang multiple power sources, offering a centralized connection point for primary power. It is engineered to hold a maximum of four XMT 450 power sources or up to six XMT 304/350 power sources. The rack is supplied empty, requiring the separate purchase of fuse kits tailored to your specific primary voltage and power source amperage requirements.

Electrical and Fusing Architecture
A critical feature of this rack is its integrated fuse holder assembly. The holders are designed to accommodate fuses for both 300 A and 450 A inverters across a voltage range of 208–575 VAC. These fuse holders meet IEC 60529 requirements for an IP-20 finger-safe rating, a market-leading safety feature that isolates live contacts. When properly configured with the correct fuses (sold separately), the rack system ensures that each individual inverter has appropriate primary circuit protection, satisfying National Electrical Code (NEC) standards for multi-operator setups.

Physical Dimensions and Mounting
Constructed for durability, the rack measures 59.38 inches in height, 43.00 inches in width, and 34.38 inches in length. The empty weight is approximately 279 lbs. The frame includes robust lifting eyes standard, facilitating transport by overhead crane or forklift. For applications requiring floor mobility, the rack base is pre-drilled to accept optional running gear (casters), allowing the unit to be rolled over uneven surfaces like concrete grating or packed gravel.

Configuration Notes
Technicians building out this rack should note that while it fits XMT 304, 350, and 450 models, the physical size of the XMT 450 limits the capacity to four units. The XMT 304 and 350 models allow for a full six-pack configuration. The open design ensures adequate airflow for the cooling systems of the mounted inverters, maintaining their duty cycles even in dense configurations. This rack is the ideal foundation for constructing a custom, high-output welding bank for structural steel, pipe, or marine fabrication.