It is a 3-pole, line-protection device with communication capability, designed for panelboard and distribution applications where adjustable trip curves and high interrupting capacity are required.
This MCCB delivers 187 kA interrupting capacity at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. Those numbers tell you what fault levels this breaker can safely clear at each voltage — critical for coordination studies and ensuring the device upstream doesn't have to trip for a downstream fault.
ETU850 trip unit and thermal performance
The ETU850 electronic trip unit allows adjustable overload and short-circuit protection settings, which is what you need when coordinating multiple breakers in a distribution panel.
The 3-pole footprint matches standard SENTRON 3VA2 panel cutouts and busbar arrangements.
Communication and monitoring
This breaker includes a communication function and an other measurement function, which means it can report current, power, and energy data over the SENTRON communication bus — useful for energy monitoring and remote trip indication without adding external CTs or meters.