Siemens SENTRON 3VA1220-4EF42-0JH0 — 200 A MCCB with Shunt Trip
It carries a 121 kA interrupting capacity at 240 VAC, stepping down through 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V — a curve that tells you this breaker is built for high-fault industrial services where the available short-circuit current is substantial at lower voltages. Thermal derating is modest up to 50 °C (still 200 A), then drops to 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C.
Auxiliary Configuration and Releases
The shunt trip lets a PLC, safety relay, or E-stop circuit open the breaker without an operator pulling the handle — essential for emergency-off circuits or interlocked disconnects.
The 70 mm depth, 140 mm width, and 158 mm height fit standard SENTRON 3VA panel footprints — it occupies the same cutout as other 3VA 4-pole frames in the 200 A class, so a panel laid out for a 160 A unit accepts this without re-drilling.