What this breaker is and what the ratings mean for fit
The Siemens 3VA1163-6MH36-0AD0 is a 3-pole IEC frame 160 circuit breaker from the 3VA1 series, rated 63 A with a breaking capacity class H — Icu of 70 kA at 415 V. That 70 kA interrupting rating means it can safely clear a fault up to that level without upstream devices needing to trip, which is the figure that governs panel SCCR compliance. The TM120M release provides starter protection: a thermal-magnetic trip unit with a fixed thermal element and adjustable magnetic short-circuit pickup (Ii) from 5 to 15 times In, so it coordinates with a motor starter's overload relay rather than duplicating it — note the description explicitly states 'without overload protection', meaning the thermal element is sized for the motor's locked-rotor protection, not for overload. Three auxiliary switches (HQ) are integrated for status feedback to a PLC or safety circuit.
Deployment context and panel integration
This breaker mounts on a DIN rail in a standard IEC enclosure. The clamp connection terminals accept copper conductors typical for panel wiring. The three auxiliary switches provide dry contacts for remote indication — useful for a motor control center where the breaker status must be visible to a PLC input card without additional interposing relays.