Siemens 3VA2163-7MN32-0AA0 — SENTRON MCCB for Motor Protection
The Siemens 3VA2163-7MN32-0AA0 is a SENTRON molded case circuit breaker (MCCB) purpose-built for motor protection, rated 63 A continuous across the full ambient range from 40 °C up to 70 °C with zero derating — that means the 63 A rating holds even in a hot panel, no need to down-rate for enclosure heat buildup. Breaking capacity is voltage-dependent: 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and 3.7 kA at 690 V — the high interrupting ratings at common distribution voltages give selectivity headroom for downstream coordination studies.
Integration & Panel Fit
Dimensions are 105 mm wide × 181 mm high × 86 mm deep — standard SENTRON 3VA form factor for a 63 A frame.
Trip Characteristics & Protection Logic
The adjustable trip class (10A, 10E, 20E) lets you match the overload curve to the motor's thermal withstand: Class 10A for submersible pumps or fast-starting loads, Class 10E for standard IEC motors, Class 20E for high-inertia fans or crushers where longer start times are expected. Phase failure detection is standard — the breaker trips on loss of any one phase, preventing single-phasing damage to the motor winding.