What this 3VA1 frame 630 breaker is and what it does
The Siemens 3VA1463-4EE32-0AA0-ZD00 is a 3-pole IEC frame 630 molded case circuit breaker (MCCB) with a TM220 thermal-magnetic release. Its breaking capacity class S delivers an Icu of 36 kA at 415 V AC — that is the maximum fault current it can safely interrupt without damage, so it suits distribution panels and feeder circuits where the prospective short-circuit current stays under that threshold. The TM220 release provides adjustable overload protection (Ir) from 440 A to 630 A, and a fixed instantaneous short-circuit pickup (Ii) set at 8 x In.