ABB Tmax is a complete range of moulded case circuit breakers, covering applications from 320A up to 3200A. Tmax T4, T5 and T6 are the moulded case circuit breakers with the best performance/size ratio on the market. T4 and T5 guarantee a breaking capacity up to 200kA at 415V and 80 kA at 690V. T4, T5 and T6 have the same depth, simplifying their positioning in the switchboard compartments, and a standardized and unified range of accessories. Moreover, they complete the range of applications up to 1150V in alternating current and 1000V in direct current. Tmax T7 is available in two versions up to 1600 A either with operating toggle or in motorizable version. They can be installed both vertically and horizontally even in the withdrawable version. Electrical performances are consistent with the rest of the range with a maximum breaking capacity of 150kA at 415V. A wide range of dipswitches and LCD electronic trip units can be selected according to plant requirements. Tmax T8 covers 2000 A, 2500 A and 3200 A frame sizes with two breaking capacities: 85 kA and 130 kA at 415 V. It is equipped with the same electronic trip units as Tmax T7, thereby guaranteeing extremely high performances able to satisfy all installation requirements. Adequately sized for the performances offered, it is supplied as standard with front terminals up to 2500 A, whereas the 3200 A frame is always supplied with rear vertical terminals.