Tmax T family is available as a complete range of moulded case circuit-breakers up to 1600 A. All the circuit-breakers, both three-pole and four-pole, are available in the fixed version; the sizes T4 and T5 in the plug-in version and T4, T5, T6 and T7 in the withdrawable one as well. With the same frame size, the circuit-breakers in the Tmax T family, are available with different breaking capacities and different rated uninterrupted currents