200 A MCCB with voltage-dependent SCCR curve
The Siemens SENTRON 3VA1220-5GF42-0JH0 is a 4-pole molded case circuit breaker rated for 200 A continuous at 40 °C, with no derating needed up to 50 °C — it holds 200 A flat through that range, then steps down to 176 A at 70 °C. The interrupting capacity follows the system voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. That SCCR curve means this breaker is sized for high-fault installations where the available fault current at the panel is known and the voltage is below 500 V for the full rating.
Line protection with auxiliary switching and shunt trip
Designed for line protection, this MCCB comes with 2 auxiliary switches plus a trip alarm switch (HQ) and a shunt trip release (STL) for remote tripping. The 70 mm depth and 140 mm width fit standard SENTRON panel footprints — drop it into a 4-pole MCCB slot without reworking the busbar arrangement. The 42 W maximum power loss at full load matters for enclosure thermal calculations; if the panel is sealed or tightly packed, that heat needs to be accounted for in the cooling budget.