Eaton XTCEXMLB Mechanical Interlock Frame B video accessory

Mechanical Interlock for XT Frame B

The Eaton XTCEXMLB is a transparent mechanical interlock accessory designed for industrial electrical control panels. It fits XT Frame B contactors and compatible frames C through N in the Series XT range. Installers use it to prevent simultaneous operation of paired contactors in reversing or changeover circuits.

Frame-size constraints and voltage rating

This interlock mounts only on the listed frame sizes and carries no voltage rating of its own; it relies on the contactor’s rated insulation. The accessory adds no electrical function, so the practical limit is the mechanical space available inside the enclosure and the coordination requirements of the specific contactor model selected.

Replaces ad-hoc mechanical interlocks

The part replaces custom-fabricated brackets or older interlock kits that lack the precise alignment of the factory accessory. The upgrade is worth it when panel builders need a tested, repeatable fit across multiple frame sizes without redesigning the mounting layout for each contactor rating.