The Siemens SENTRON 3VA1110-4EF32-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current (Iu) at 40 °C, holding that rating flat through 50 °C before a gentle derating curve — 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, 90 A at 70 °C. At 240 V it interrupts 121 kA; at 415 V it still handles 75.6 kA; at 440 V it's 52.5 kA; at 690 V it's 11.9 kA. That 121 kA at 240 V covers high-fault utility feeds and transformer secondaries where prospective short-circuit current can exceed 100 kA — common in industrial switchboards and large motor control centers. No electronic trip unit, no adjustable curve, no communication module. This is a fixed-characteristic breaker for straightforward line protection where selectivity is achieved by cascading frame sizes, not by programming trip curves. A built-in shunt trip (STL) allows remote tripping via a control signal — the auxiliary release design is a shunt trip, order code 3VA9688-0BL32 for the integrated auxiliary trip module. This is a clean, basic MCCB with one remote-trip capability; if you need UVR or aux contacts, you spec a different variant or add external modules.
IP40 on the front.