The Siemens 3VA1112-5ED32-0AH0 is a 3-pole SENTRON molded case circuit breaker rated for 125 A continuous current (Iu) across ambient temperatures up to 50 °C, with a slight derating curve beginning at 55 °C down to 112.5 A at 70 °C. The TM210 thermal-magnetic release handles the overcurrent and short-circuit protection without an undervoltage or ground-fault module — it's a straight line-protection device meant for distribution panels and feeder circuits. At 240 V it interrupts 187 kA; at 415 V, 121 kA; at 440 V, 75.6 kA; at 690 V, 17 kA. That spread tells you the arc extinction is voltage-dependent — the 690 V figure is still respectable for a 125 A frame, but the real strength is in the 400–480 V class where most industrial distribution lives.
Footprint is 130 mm tall, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB envelope that drops into SENTRON mounting plates and DIN-rail adapters without surprises. That's enough to send a remote status and a separate fault signal back to the PLC or annunciator without adding a module later.