The Siemens 3VA1112-6EF32-0KH0 is a 3-pole SENTRON molded case circuit breaker rated for line protection, carrying 125 A continuous current (Iu) at 40 °C through 50 °C, then derating to 112.5 A at 70 °C. That thermal curve matters in a warm panel — if the enclosure ambient sits at 55 °C, you're limited to 120 A continuous, not the full 125 A. The TM240 thermal-magnetic release handles the overload and short-circuit trip curve. Breaking capacity runs 220 kA at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. The 690 V rating at 17 kA still covers most industrial 600 V class systems. Front protection is IP40 — fine for a closed panel, not for washdown exposure.
Integrated accessories and wiring
The auxiliary contact version is already built in — no separate order needed for basic status feedback. The integrated auxiliary trip uses order code 3VA9688-0BL33 if you need a replacement module. If you need remote monitoring or ground fault, you'd step up to a different 3VA variant with those modules. The 70 mm depth fits most distribution panels.