SENTRON 3VA2163-7MN36-0BC0 — Motor Protection MCCB, 63 A, Current Production
Breaking capacity reaches 330 kA at 240 V, stepping down to 242 kA at 415 V and 440 V, then 187 kA at 500 V, and 3.7 kA at 690 V.
Motor Protection Design and Auxiliary Components
It includes phase failure detection — a critical feature for three-phase motor loads, where a lost phase can single-phase the motor and cause overheating if not interrupted. The basic switch variant is 3VA2163-7MN36-0AA0, which is the core switching mechanism; the -0BC0 suffix adds the UVR and auxiliary switch complement. If you need remote trip indication or energy monitoring, you would add an external communication module or use the auxiliary switch contacts for hardwired status.
Dimensions are 181 mm height, 105 mm width, 86 mm depth. Panel cutout and enclosure depth must accommodate the full 86 mm depth, including the rear arc-chamber clearance. The 181 mm height is the body height; allow additional clearance above for wiring and below for the arc vent. Maximum power loss is 6.5 W, which is modest for a 63 A MCCB and helps keep enclosure internal temperature rise manageable.
The trip times are specified with a minimum of 4 s and maximum of 17 s — this is the time-delay band for the overload protection at a given multiple of the rated current (typically at 6× or 7× Ir for motor-start curves). The 4–17 s window means the breaker will hold through a normal motor start (which typically lasts 3–10 s) but will trip before the motor's locked-rotor withstand time expires. For selectivity studies, coordinate the downstream breaker's instantaneous trip threshold to be below the upstream device's time-delay band.