The Siemens 3VA2110-7MN32-0AH0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous at 40 °C, with a 3-pole configuration and a motor protection design that includes phase failure detection. It interrupts up to 330 kA at 240 V, so it handles high-fault-current scenarios typical of motor branch circuits in industrial panels.
What the ratings mean for fit
The 100 A continuous rating holds flat from 40 °C through 70 °C — no derating needed across the operating ambient range. That simplifies panel thermal budgeting: you don't have to oversize the frame for a warm enclosure. The interrupting ratings drop sharply above 500 V: 187 kA at 500 V, then only 3.7 kA at 690 V. For a 690 V line, verify the available fault current stays under that 3.7 kA threshold — this breaker is not a general-purpose 690 V device. It ships with 2 auxiliary switches plus a trip alarm switch (HQ), which gives you both status feedback and a separate alarm contact for fault annunciation without adding a module.
Panel integration and mounting
The 3VA2110-7MN32-0AH0 measures 105 mm wide by 181 mm tall by 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures. The 86 mm depth leaves room behind the gland plate for wiring without forcing a deeper cabinet. Operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C. That covers unheated warehouses and outdoor cabinets in temperate climates. Maximum power loss is 10 W — negligible for panel heat calculations, but worth noting if you're packing multiple breakers in a sealed, non-ventilated enclosure.