SENTRON 3VA2 MCCB with ETU550 trip unit
That matters when coordinating downstream feeders or meeting selective-coordination targets in a distribution panel. Breaking capacity runs 242 kA at 240 V AC and stays at 187 kA through 415–440 V, then drops to 121 kA at 500 V and 3.7 kA at 690 V. The 3VA2 platform includes a communication function, which on this variant means the ETU550 can interface with a communication module for power monitoring and remote trip indication — useful for a BOM line that needs energy data or fault logging without a separate metering block.
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint for the 3VA2 frame. The breaker mounts via screw terminals to a backplate or DIN rail adapter; the 3VA2 family shares a common mounting pattern across the current range, so swapping a 25 A unit for a higher-rated sibling in the same frame doesn't require re-drilling the panel.