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. The ETU550 electronic trip unit gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves, so you can dial in selectivity with downstream breakers rather than relying on fixed thermal-magnetic bands. An undervoltage release (UVR) is built in — when control voltage drops below the dropout threshold, the breaker trips immediately, which is standard for emergency-stop circuits or mains-disconnect applications where loss of control power must equal loss of load power.
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.
Thermal derating and panel integration
Rated 100 A up to 50 °C ambient; above that it derates linearly to 85 A at 70 °C. If the breaker sits in a non-ventilated enclosure near other heat sources, use the 60 °C column (92.5 A) as your practical sizing limit. 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.
Auxiliary contacts and communication
Comes with 2 auxiliary switches (HQ type) for status feedback to a PLC or annunciator panel, plus a communication function for remote monitoring — no separate add-on module needed for basic signaling.