The ABB KT5MIR-HB is a mechanical interlock accessory designed for Tmax T4-T5 circuit breakers, ensuring safe and reliable horizontal integration. This accessory features a robust design with a net weight of 12 pounds 4 ounces and a gross weight of 13 pounds, making it a durable choice for industrial applications. The item number KT5MIR-HB and UPC 662019202372 guarantee its authenticity and traceability. Ideal for enhancing system safety, this mechanical interlock is a crucial component for any setup requiring secure mechanical linkage between Tmax T4 and T5 units.