What the ratings mean for fit
The Siemens SENTRON 3VA1110-5FF46-0AA0 is a 4-pole molded case circuit breaker (MCCB) with a rated continuous current Iu of 100 A and a TM240 thermal-magnetic overcurrent release. The 100 A rating holds flat from 40 °C to 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C — so in a warm panel you lose about 9 % at the top of the operating range. The interrupting capacity is 187 kA at 240 V, 121 kA at 415 V, 76 kA at 440 V, and 17 kA at 500 V and 690 V; that 187 kA at 240 V is the headline number for high-fault commercial services. The TM240 release is a fixed thermal-magnetic design — no interchangeable trip units, no communication module, no ground-fault monitoring. It is a line-protection device (not a motor-protection curve), so it is sized for feeder or distribution duty, not for starting inrush.
Panel integration and mounting
The breaker measures 70 mm deep by 101.6 mm wide by 130 mm high. It is a standard panel-mount MCCB — no DIN-rail clip, so it bolts into a cutout or mounts on a backplate with the supplied hardware. The front face carries an IP40 rating, which means protection against tools and wires greater than 1 mm, but not against water ingress; keep it inside a sealed enclosure if the panel sees washdown or outdoor exposure. The 4-pole footprint is wider than a 3-pole unit, so check the gland-plate space if you are retrofitting into an existing distribution board.