SENTRON 3VA1163-5EE32-0JC0 — 63 A MCCB with Shunt Trip
The Siemens SENTRON 3VA1163-5EE32-0JC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 63 A continuously at 40 °C ambient and derating to 58 A at 70 °C. Breaking capacity reaches 187 kA at 240 V and 121 kA at 415 V — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream breakers. Factory-fitted with a shunt trip (STL) release and two HQ auxiliary switches, the unit accepts remote trip commands and signals breaker status back to a PLC or annunciator panel. Insulation voltage is rated 800 V, covering 480 V and 600 V class systems with margin.
Breaking Capacity and Selectivity Planning
The 187 kA at 240 V and 121 kA at 415 V ratings mean this breaker can be placed at the main or feeder position in high-fault installations without needing a current-limiting fuse upstream. At 440 V the rating is 75.6 kA; at 500 V and 690 V it holds 17 kA — still adequate for most motor control center (MCC) infeeds at those voltage levels. Thermal derating is minimal: 63 A from 40 °C through 50 °C, then 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. For a panel running at 50 °C ambient (common in enclosed switchgear), the breaker delivers its full 63 A frame rating.
Panel Fit and Integration
Dimensions are 76.2 mm wide (3 in), 130 mm high (5.12 in), and 70 mm deep (2.76 in). The 3-pole frame occupies three 18 mm module positions on a DIN rail or panel-mount footprint. Two HQ auxiliary switches and the shunt trip are integrated inside the breaker body — no external wiring compartments needed for the accessories.