Integrator note
The 3VA1163-6MH32-0AC0 is a Siemens 3VA1 IEC frame 160 circuit breaker, 3-pole, with a 63 A magnetic-only release (TM120M, AM). Breaking capacity is class H: 70 kA at 415 V AC — enough for high-fault utility feeds or transformer secondaries in industrial panels. The magnetic trip adjustable 5–15 x In covers motor-start inrush without nuisance tripping; there is no thermal overload element, so a separate overload relay must be wired downstream for motor protection.
What the ratings mean for fit
The 70 kA Icu @ 415 V means this breaker can safely interrupt a fault current up to that level without welding contacts or cascading upstream — critical for high-SCCR panel designs. The magnetic-only release (TM120M) provides short-circuit and ground-fault protection only; since In = 63 A and the thermal element is omitted, it relies on a separate overload relay for motor thermal protection. The 2 auxiliary switches (HQ) and nut keeper kit are factory-fitted, saving panel-builder wiring time.