SENTRON 3VA2063-6HL32-0JH0 — 63 A MCCB for Line Protection
The Siemens SENTRON 3VA2063-6HL32-0JH0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, designed for line protection in distribution panels. It carries a 242 kA breaking capacity at 240 V AC, dropping to 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V — so at typical 400 V class supply voltages it handles high fault currents without cascading upstream. The adjustable thermal-magnetic trip covers 95 A minimum to 756 A maximum, giving selectivity flexibility downstream.
What the Ratings Mean for Your Panel
The 63 A continuous rating holds across the full ambient temperature range from -25 °C to 70 °C — no derating curve to chase at elevated panel temperatures. That's unusual for an MCCB this compact; most competitors start derating above 40 °C. The 3-pole construction fits standard 3-phase distribution, and the 86 mm depth (3.39 in) × 105 mm width (4.13 in) × 181 mm height (7.13 in) footprint is sized for DIN-rail or direct-panel mounting in a typical 600 mm wide enclosure. Maximum power loss is 5.4 W per pole — negligible for thermal budgeting in a sealed enclosure, but worth noting if you're packing multiple breakers in a small gland plate area. The breaker includes a trip indicator and voltage trigger for remote status. It ships with 2 auxiliary switches plus 1 trip alarm switch (HQ configuration) and a shunt trip release (STL) for remote tripping. No undervoltage release, no ground-fault monitoring, no communication module — this is a straightforward line-protection device, not a smart breaker.