What the ratings mean for fit
The Siemens 3VA1010-3ED42-0AE0 is a 4-pole IEC molded-case circuit breaker in the 3VA1 frame, rated 100 A continuous with a 25 kA interrupting capacity at 415 V AC — switching capacity class N. That 25 kA figure is the maximum fault current it can safely clear at that voltage; for a panel with a lower available fault current (say 18 kA), the breaker still provides full protection, but if your service entrance can deliver 30 kA, you need a higher-class frame. The TM210 thermal-magnetic trip unit provides fixed overload protection at Ir = 100 A (non-adjustable) and fixed short-circuit pickup at Ii = 10 × In (1000 A). The N-conductor is unprotected — this is a 3-pole + N breaker where the neutral is switched but not monitored for overcurrent, standard for TN and TT systems where the neutral is bonded at the source.
Deployment context
The 3VA1 frame mounts on a DIN rail or panel plate inside a standard distribution board or motor control center. The lug terminals accept copper or aluminum conductors up to the frame's rated cross-section — no special adapter needed for panel wiring. The four auxiliary switches (HQ) provide remote status indication for the main contacts and trip mechanism, useful for PLC or SCADA monitoring of the feeder circuit.