The Siemens 3VA1110-4GF42-0KH0 is a 4-pole IEC frame 160 circuit breaker with a 100 A thermal-magnetic trip unit (TM240, ATAM) and a 36 kA breaking capacity at 415 V — class S, meaning it handles moderate fault levels typical of commercial and light industrial distribution without needing a larger frame. Overload protection is adjustable from 70 A to 100 A, and the instantaneous short-circuit pickup is set between 5 and 10 times In (500–1000 A), giving the panel builder room to coordinate with downstream branch breakers. It ships with a factory-fitted shunt trip on the left side rated for 208–277 V AC 50/60 Hz or 220–250 V DC, plus two auxiliary changeover switches — so the remote-trip and status-signal wiring is already in place for a control panel.
The nut keeper kit included with this order code secures the breaker to the mounting plate without loose hardware — a small detail that saves time during panel assembly.