The Siemens SENTRON 3VA2110-7MN32-0HL0 is a 3-pole molded case circuit breaker rated for 100 A continuously across the full ambient range from 40 °C to 70 °C — no derating needed in a warm panel. It's specifically designed for motor protection, with integrated phase failure detection and a shunt trip release (STL) for remote tripping. The interrupting capacity hits 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That 330 kA figure means it can handle a direct fault on a high-capacity transformer secondary without upstream coordination problems.
What the ratings mean for panel fit
Footprint is 105 mm wide, 181 mm tall, 86 mm deep — standard SENTRON 3VA2 frame size. It mounts on a DIN rail or directly to a backplate. The 105 mm width takes three pole widths at 35 mm each, so it occupies the same slot as any other 3-pole 3VA2 MCCB. Power dissipation maxes at 10 W, negligible for thermal budgeting inside a closed enclosure.
Motor protection specifics
The motor protection design means the trip curve is shaped for motor inrush — it tolerates the 6-8x FLA starting current for the adjustable time band (minimum 4 s, maximum 17 s,) before tripping on overload. Phase failure detection catches a lost phase on the line side and trips before single-phasing damages the motor. The shunt trip release (STL) allows a remote emergency-stop or PLC-driven trip without undervoltage release. No ground-fault monitoring module is integrated; add an external module if GF protection is required.