What the ratings mean for your panel
The Siemens SENTRON 3VA2110-5JQ32-0DH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 100 A. The ETU560 electronic trip unit gives you adjustable overload and short-circuit protection curves, plus a communication function for remote monitoring or integration into a higher-level control system. The interrupting ratings are what decide the fit: 187 kA at 240 V, 121 kA at 415 V and at 440 V, 79 kA at 500 V, and 4.25 kA at 690 V. That 187 kA at 240 V means this breaker can safely clear a fault up to that level without upstream devices needing to coordinate — important for high-fault-capacity distribution panels where the available short-circuit current is known to be high. The continuous current rating holds flat at 100 A from 40 °C through 50 °C ambient; above that it derates to 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. If your panel ambient runs above 50 °C, the effective ampacity drops — size the breaker for the actual enclosure temperature, not the nameplate 100 A. The unit includes an undervoltage release (UVR) and a ground-fault monitoring version using summation-current formation on the L-conductor. The auxiliary contact configuration is 2 auxiliary switches plus 1 trip alarm switch (HQ designation). Latching endurance is rated at 20 000 operations. Maximum power loss is 12.5 W.
Panel integration and compliance
The 3VA2110-5JQ32-0DH0 mounts in a standard panel footprint with dimensions 105 mm wide, 181 mm high, and 86 mm deep. The supplied basic switch is order code 3VA2110-5JQ32-0AA0; the integrated auxiliary trip is 3VA9608-0BB25. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Rated insulation voltage Ui is 800 V.