63 A MCCB with 330 kA interrupting rating at 240 V
The Siemens SENTRON 3VA2163-7MN36-0KC0 is a 3-pole molded case circuit breaker rated 63 A continuously from 40 °C up to 70 °C — no derating needed across typical panel ambient temperatures. Its interrupting capacity reaches 330 kA at 240 V, dropping to 242 kA at 415/440 V, 187 kA at 500 V, and 3.7 kA at 690 V, so it handles high-fault utility feeds or transformer secondaries where fault current is high but voltage is moderate. The breaker is designed for motor protection, with phase failure detection built in, and carries a shunt trip (STL) plus two HQ auxiliary switches. Power dissipation is 4 W maximum.
Mounting and integration
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep — a standard SENTRON 3VA frame size that fits common panel cutouts and DIN-rail adapters. The 3-pole construction with shunt trip and auxiliary switch wiring lands on the same terminal layouts as other 3VA family breakers, so a swap from a similar 3VA2163 variant (like the 3VA2163-8HM32-0AA0) should drop into the same mounting footprint without rewiring the main power connections. Verify auxiliary wiring differences between HQ and other switch configurations before committing.