Part identity and key ratings
The Siemens 3VA1163-6GE42-0AA0-ZD00 is a 4-pole moulded-case circuit breaker in the 3VA1 IEC frame 160 platform, rated In=63A with a TM220 thermal-magnetic trip unit. Breaking capacity class H delivers Icu=70kA at 415 VAC — sufficient for high-fault-current downstream of a transformer or in a main distribution board where the available fault current exceeds 50 kA.
What the trip settings mean for your panel
Overload protection Ir is adjustable from 44 A to 63 A via the dial on the front face — set it to match the continuous ampacity of the protected conductor, not the load nameplate. Short-circuit pickup Ii is fixed at 10 × In (630 A), which is a standard motor-start or general distribution value; it avoids nuisance tripping on transformer inrush but clears a bolted fault fast. The N-conductor protection is set to 100 % of the phase rating, meaning the neutral pole tracks the phase pole — required on 4-wire systems where harmonic currents can overload the neutral.
Integration notes
Mounts on a standard DIN rail or via the 3VA1 fixed-panel-mount kit. The nut keeper kit (included per the order code suffix) retains the terminal nuts during wiring — a time-saver on a packed panel where dropped hardware means a panel pull. The 3VA1 frame accepts plug-in accessories (auxiliary contacts, shunt trip, undervoltage release) that snap into the left-side accessory slot without removing the breaker from the rail.