Siemens 3VA2163-6HN32-0KC0 — 63 A MCCB with Shunt Trip, Line Protection
The Siemens SENTRON 3VA2163-6HN32-0KC0 is a 3-pole molded case circuit breaker (MCCB) rated at 63 A continuous current, designed for line protection in distribution panels. Its breaking capacity hits 242 kA at 240 V AC — enough to handle high-fault utility feeds without cascading upstream. The frame carries a shunt trip release (STL) for remote emergency-off or undervoltage tripping, and two auxiliary switches (HQ) for status feedback to a PLC or annunciator panel.
Breaking Capacity and Selectivity
This breaker's interrupting rating is flat across the 240-415 V range: 242 kA at 240 V, 187 kA at 415 V and 440 V, then 121 kA at 500 V. At 690 V it drops to 3.7 kA — still usable for 690 V line-to-line systems with limited fault current. The 63 A rating holds derate-free from 40 °C up to 70 °C ambient, which is unusual; most MCCBs start derating above 40 °C. That means it can sit in a hot top-of-panel location without losing capacity.
Integration and Panel Fit
Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. The 3-pole frame mounts via screw-clamp or plug-in base in a standard distribution board. The shunt trip (STL) is factory-integrated — no field-add kit needed. Two auxiliary switches (HQ) give you one N/O + one N/C contact for remote status. No undervoltage release on this variant; if UVR is required, specify the -0KC0 with the appropriate suffix. The breaker is line-protection configured (not motor-protection), so thermal-magnetic curve is set for cable and busbar protection, not overload relay coordination.