What the ratings mean for fit
The 3VA1110-3EF36-0DH0 is a 3-pole IEC frame 160 circuit breaker with a 100 A continuous current rating and a breaking capacity of 25 kA at 415 V AC (class N). That 25 kA Icu tells you it can safely interrupt a fault current up to that level without welding contacts or cascading failure upstream — critical for panel coordination studies. The TM240 thermal-magnetic trip unit gives adjustable overload protection (Ir = 70…100 A) and fixed short-circuit protection (Ii = 5…10 × In), so you set the overload band to match the cable or load, not the breaker's maximum.
Built-in undervoltage release and auxiliary contacts
This breaker ships with an undervoltage release (UVR) rated 208–230 V AC 50/60 Hz — it will trip the breaker if control voltage drops, which is standard for emergency-stop or mains-monitoring circuits. It also carries two HQ auxiliary switches and one HQ trip alarm switch, so you get remote status (open/closed) plus a separate signal for fault tripping. All connections are clamp-type, which speeds panel wiring compared to screw terminals.