What this breaker does on the line
The Siemens 3VA1010-3ED42-0AA0-ZD00 is a 4-pole IEC Frame 100 molded-case circuit breaker rated for 100 A continuous, with a 25 kA interrupting capacity at 415 V AC. The TM210 thermal-magnetic trip gives fixed overload protection at Ir=100 A and instantaneous pickup at 10 x In (1000 A), so motor-start inrush or transformer energization won't nuisance-trip it. The N-conductor is unprotected on this variant — the neutral pole passes through without a trip element, which is standard for 4-pole system protection where the neutral is bonded elsewhere. Termination is via lug terminals, sized for DC power cabling common in OEM gear out of China.
The fixed Ir=100 A and Ii = 10 x In mean no field adjustment of trip settings; you select the breaker for the load, not tune it on-site.