SENTRON 3VA2063-6HN32-0CH0 — 63 A MCCB for Line Protection
The Siemens 3VA2063-6HN32-0CH0 is a SENTRON molded case circuit breaker (MCCB) rated for continuous current of 63 A across ambient temperatures from 40 °C to 70 °C — no derating needed in that range, so it holds its full rating inside a warm panel. Breaking capacity hits 242 kA at 240 V AC, 187 kA at 415/440 V, 121 kA at 500 V, and 3 kA at 690 V — the 242 kA figure at 240 V means it can interrupt very high fault currents on low-voltage distribution, typical for large transformer-fed switchboards. Three-pole construction, designed for line protection — no ground-fault monitoring, no communication module. It ships with an undervoltage release (UVR) and a factory-fitted auxiliary switch block: 2 auxiliary switches plus 1 trip alarm switch HQ.
Dimensions and Panel Fit
Footprint is 105 mm wide × 181 mm high × 86 mm deep — the 86 mm depth (3.39 in) is the projection behind the panel face, so check gland-plate clearance in shallow enclosures. Maximum power loss is 7.9 W — negligible for thermal budgeting in a multi-breaker lineup, but worth noting if the panel is densely packed.