ABB, Tmax XT, Tmax XT Molded Case Circuit Breaker 3-Pole 6.3A, Breaking Capacity 150 kA, Fixed

This moulded case circuit breaker provides protection and switching for three-phase electrical systems in industrial and commercial installations. It operates as a thermal-magnetic overcurrent device and is designed for fixed mounting and fixed electrical connections, offering a compact, panel-mounted solution for distribution and motor circuits.

• 150 kA breaking capacity enables safe interruption of high fault currents • 6.3 A nominal current rating for precise circuit protection • Thermal-magnetic trip unit for combined overload and short-circuit response • Rated for 690V AC systems allowing wide AC voltage compatibility • 500V DC rating supports DC applications and control circuits • Reset lever simplifies manual reclosure after trip events

• Suitable for motor protection in three-phase installations • Ideal for distribution panels in industrial automation systems • Used with control cabinets requiring fixed-terminal connections • Can be used for protection of DC-fed equipment up to 500V • Used for replacement or upgrade in systems needing high interrupting capacity

It is intended for fixed mounting, so panels use a fixed-mount installation method with secured fixings rather than plug-in rails.

The unit employs fixed terminals designed for robust, permanent cable termination and reliable conductor clamping.

Overloads produce a time-delayed thermal trip response, allowing short-duration inrush currents while protecting against sustained excess current.

The device’s interrupting capability is specified at 150 kA, enabling it to break high prospective fault currents typical in industrial supply networks.