Line protection MCCB with ETU550 — 100 A frame, 187 kA IC at 240 V
The Siemens SENTRON 3VA2110-5JP32-0BC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 100 A continuous current (Iu) at 40 °C and delivering a 187 kA interrupting capacity at 240 VAC — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream.
Interrupting ratings across common voltages
The 3VA2110-5JP32-0BC0 delivers 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V — the steep drop above 500 V reflects the physical limits of the arc-extinction chamber, so verify your system voltage against the table before committing the BOM line.
Dimensions are 105 mm wide × 181 mm high × 86 mm deep — standard 3-pole MCCB footprint for a 100 A SENTRON frame, so it fits existing panel cutouts and busbar layouts without rework. Maximum power loss is 12.5 W per pole at rated current — account for that in your enclosure thermal calculation, especially when grouping multiple breakers in a sealed cabinet.