The Tmax XT1 molded case circuit breaker series with rated currents up to 160 A is available in 3- or 4-pole versions, permanently mounted or plug-in and withdrawable. The Tmax XT1 can be equipped with thermomagnetic releases for the protection of DC/AC networks. The series is also suitable for use in communication systems and 400 Hz systems. The Tmax XT1 molded case circuit breakers are available in a derived version as load disconnectors. Additional accessories are available.