What it is and what it does
The Siemens SENTRON 3VA2110-6HL32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection. It carries a continuous current of 100 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel thermal budgeting. The interrupting ratings are the headline: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA figure at 240 V means this breaker can safely clear a fault on a high-capacity transformer secondary without upstream fuses needing to coordinate — it's sized for high-available-fault-current industrial services.
What the ratings mean for fit
The 100 A continuous rating is flat from 40 °C to 70 °C — that's a wide thermal window. Many MCCBs start derating above 40 °C; this one holds its full ampacity, so it can sit in a warm enclosure next to other heat sources without upsizing the frame. The 242 kA interrupting capacity at 240 V is the highest figure in the range; it qualifies the breaker for service entrance or main feeder duty where fault current is high. The 800 V rated insulation voltage (Ui) means the breaker's internal clearances and creepage are designed for 690 V systems, which is the typical upper bound for industrial low-voltage networks.
Integration notes
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep. It mounts on a DIN rail or directly to a backplate via the standard 3VA mounting footprint. The 3-pole design with undervoltage release (UVR) means it will trip on loss of control voltage — useful for emergency-stop circuits or undervoltage protection schemes. No communication function is built in; this is a plain electromechanical MCCB, not a power-metering or trip-unit-communicating variant. The supplied basic switch is order code 3VA21106HL320AA0.