It is a 4-pole unit with an ETU550 electronic trip unit, meaning the trip curve is programmable — not a fixed thermal-magnetic — so you can dial in coordination with downstream breakers rather than guessing. The breaking capacity tells you where this breaker can safely interrupt a fault: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V.
Sourcing and lifecycle — no obsolescence concern here
The ETU550 trip unit and communication function mean this breaker is designed for modern networked distribution panels, not a legacy design being phased out.
Panel fit and installation
The 140 mm width for a 4-pole MCCB is typical for the SENTRON platform; busbar and lug kits are shared across the family. The breaker includes communication capability, so expect a plug-in module slot for PROFIBUS or PROFINET if you need remote monitoring and trip indication.
