2004-01-13 - Tmax T1, T2 and T3 cover all requirements up to 250 A in a frame depth of just 70 mm
The Tmax range has been developed to combine a very high level of performance, comparable to larger sized circuit breakers, with reduced overall dimensions, easy installation and increased safety for installers and operators thanks to the double insulation which is a first on this size of circuit-breaker. All three frame sizes feature an adjustable thermal threshold, while the mid-size T2 unit is also available with an electronic release for even greater flexibility.
T1 rated up to 160 A, with a single pole version
Tmax T1 is the most compact 160 A MCCB on the market. It has a short-circuit breaking capacity up to 36 kA at 415 V AC and its high performance when used as a general switchboard circuit breaker means that the short-circuit withstand control tests (IEC 60439-1) do not have to be carried out. All the installer has to do is follow ABB’s instructions to obtain a certified AS (Standard Apparatus) or ANS (Non-Standard Apparatus) switchboard.
In addition, ABB has developed a single-pole circuit breaker, Tmax T1 1P, able to cover currents up to 160 A at service voltages up to 240 V AC. It is identical to the standard T1 with the exception of its width, which is the 24.5 mm size typical of single-pole circuit breakers. It can therefore be installed in distribution switchboards using a base plate, or even side by side with other Tmax circuit-breakers.
T2 intelligence and high performance