What this 3VA1 frame 630 breaker carries
The Siemens 3VA1463-4EF42-0AA0-ZD00 is a 4-pole IEC frame 630 circuit breaker with breaking capacity class S, rated Icu=36kA at 415V. It uses a TM240 ATAM trip unit — thermal-magnetic, adjustable — with In=630A, overload protection Ir adjustable 440A to 630A, and short-circuit protection Ii fixed at 4 to 8 times In.
The TM240 ATAM trip gives you adjustable thermal pickup (Ir) across a 440-630A window, so one SKU covers a range of feeder or main breaker sizes. The nut keeper kit is a panel-builder detail: it retains hardware during assembly, saving time on the line.