Siemens 3VA1220-5MH32-0KH0 — 200 A SENTRON MCCB, Starter Protection Design
Interrupting capacity reaches 187 kA at 240 V, dropping to 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 4.5 kA at 690 V — the 690 V figure is low enough that this breaker is best applied at 480 V or below for high-fault installations. Thermal derating is minimal up to 50 °C (full 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 — a 12% reduction at the top end, which matters for enclosed panels with limited ventilation.
Auxiliary Configuration and Release Options
Footprint is 105 mm wide by 158 mm tall by 70 mm deep — a standard SENTRON 3VA12 frame size that fits existing 3VA panel cutouts and busbar systems without modification.