The Siemens SENTRON 3VA2163-5MN32-0AG0 is a 3-pole molded case circuit breaker (MCCB) designed specifically for motor protection, with phase failure detection built in. It carries a continuous current rating of 63 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel sizing in warm enclosures. Interrupting capacity is the headline here: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA figure at 240 V places it well into high-fault-duty territory — suitable for large transformer secondaries or busway taps where available fault current is high. The steep drop to 3.7 kA at 690 V is normal for this frame size; if your system runs at 690 V, verify the available fault current stays under that limit. The breaker ships with a 1 auxiliary switch plus 1 trip alarm switch (HP type) factory-installed, so you get status feedback and a remote trip indication without ordering add-on modules separately. Power loss is 4 W maximum — negligible for thermal budgeting inside a panel.
Panel Fit & Integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises. The 86 mm depth is the body-only dimension; allow additional clearance for the handle throw and rear terminals when laying out the gland plate.