The Siemens SENTRON 3VA2163-6HN32-0JL0 is a 3-pole molded case circuit breaker rated for 63 A continuous current, designed for line protection in distribution panels. Its interrupting capacity hits 242 kA at 240 V AC — that is the figure that governs selectivity in high-fault installations like transformer secondaries or large motor control centers. At 415 V it still clears 187 kA, so it holds coordination downstream of a 2000 kVA transformer without cascading.
Breaking capacity and thermal performance
The 242 kA at 240 V and 187 kA at 415 V mean this breaker can be applied on the line side of a high-capacity bus without upstream fusing — a real panel-space saver. At 690 V the rating drops to 3.7 kA, so it is not a primary choice for 690 V distribution; that is a coordination note for anyone running a 690 V drive bus. The 63 A rating holds flat across the full ambient range from 40 °C to 70 °C (–). No derating needed in a warm enclosure — that is unusual for a compact MCCB and simplifies the panel thermal calculation.
Auxiliary and release configuration
Factory-fitted with 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch HQ, plus a shunt trip release (STL). That covers remote trip, status feedback, and alarm annunciation without adding external relays. The shunt trip is wired separately from the main circuit — verify control voltage compatibility with the panel's 24 V DC or 110 V AC supply.
Dimensions and panel fit
At 86 mm deep, 105 mm wide, 181 mm tall (–), this breaker fits standard Siemens SENTRON 3VA mounting footprints. The 105 mm width is three pole spaces on a 35 mm grid — no extra width for the shunt trip or auxiliary switches, they tuck into the accessory compartment.