Page 5 - MCCB-XT2-XT4

ABB | SA CE T ma x X T
ABB | SACE Tmax XT
Glossary

Term Description
SACE Tmax XT2 New series of ABB SACE moulded-case circuit-breakers
SACE Tmax XT4
CB Circuit-breaker
Trip unit / Protection Electronic unit connected to the CB, which provides measuring, monitoring and protection functions for the
release CB if faulty operating conditions occur. In the event of an alarm, it commands a TRIP
Ekip Touch Trip unit for SACE Tmax XT2-XT4 CB, equipped with LCD display and available in four different versions
Trip coil CB opening actuator controlled directly by Trip unit
Concluding action of protection timing or a test command which, except in special configurations applicable
TRIP to the trip unit, coincides with activation of the trip coil, which instantly opens the bars of each pole and
interrupts the circulating current
Vaux Auxiliary power supply
4P / 3P / 3P + N CB configuration: four-pole (4P), three-pole (3P) and three-pole with external neutral (3P + N)
If Fault current measured by Trip unit, useful for calculating the trip time t
t

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