What the ratings mean for fit
The Siemens 3VA1110-6EF36-0AE0 is a 3-pole SENTRON molded case circuit breaker rated for 100 A continuous current (Iu) with a TM240 thermal-magnetic trip unit — the '240' indicates the fixed thermal pickup at 100% of rated current, so it holds 100 A continuously and trips on overload above that threshold without field adjustment. The 220 kA interrupting rating at 240 V tells you this breaker can safely clear a fault up to that level on a 240 V line; at 415 V it still handles 154 kA, and at 690 V it's rated 17 kA. That's a high-interrupting-capacity (HIC) frame — sized for transformer secondaries or large motor branch circuits where fault current runs high. The 4 auxiliary switches (HQ type) give you four form-C contacts for remote status indication — useful for PLC feedback on a body-shop weld line where you need to know the breaker state without walking the panel. No undervoltage release or shunt trip on this variant; if you need remote tripping, you'd spec a different suffix.
Deployment context
Panel footprint is 76.2 mm wide by 130 mm high by 70 mm deep — standard 3-pole MCCB envelope for DIN-rail or screw-mount backplate. IP40 on the front means it's protected against tools and wires >1 mm, but it's not washdown-rated; keep it inside a sealed enclosure in wet or dusty environments.