Breaking capacity and protection profile
The 3VA1163-6MH32-0HH0: This 3VA1 IEC frame 160 MCCB carries a 70 kA breaking capacity at 415 V (class H), meaning it can safely interrupt a fault current up to that level without upstream fuses needing to clear first — a critical spec for panel SCCR coordination in a 415 V distribution board. The 63 A thermal-magnetic trip (TM120M) provides short-circuit protection adjustable from 5 to 15 x In, but note the description explicitly states it ships without overload protection, so this unit is intended for applications where overload protection is handled upstream or by a separate motor starter relay.
Integrated control and signalling
Factory-fitted with a shunt trip (STL) rated 12–30 V DC and 24 V AC 50/60 Hz, plus two HQ auxiliary switches and one HQ trip alarm switch. The shunt trip allows remote tripping from a PLC or emergency-stop circuit, while the auxiliary contacts report breaker position back to the control system — no separate add-on modules needed for basic status feedback.