Siemens SENTRON 3VA1163-5MH32-0HA0 — 63 A MCCB with Shunt Trip
The Siemens SENTRON 3VA1163-5MH32-0HA0 is a 3-pole molded case circuit breaker rated 63 A at 40 °C, with a breaking capacity of 187 kA at 240 V and 121 kA at 415 V. The shunt trip allows a remote signal (from an E-stop, PLC, or safety relay) to open the breaker independently of the overcurrent mechanism.
The 3VA1163-5MH32-0HA0 delivers 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 7.5 kA at 500 V and 690 V. Thermal derating is minimal up to 50 °C (full 63 A), then drops to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. In a sealed panel with ambient near 60 °C, you lose only 2 A — the TM120M release holds its trip curve well. Maximum power loss is 17.3 W, which is modest for a 63 A MCCB — relevant for thermal budgeting inside a crowded enclosure.
The 76.2 mm width (3 inches) is standard for a 3-pole SENTRON 3VA frame — it occupies three adjacent 25 mm DIN-rail positions or a dedicated mounting plate.