What this breaker delivers
The Siemens 3VA1063-4ED32-0AA0-ZD00 is a 3-pole IEC frame 100 circuit breaker rated 63 A continuous, with a breaking capacity class S delivering Icu = 36 kA at 415 V. That 36 kA figure means it can safely interrupt a fault current up to that level without welding its contacts or rupturing the arc chamber — critical for panel SCCR compliance under IEC 60947-2. The TM210 thermal-magnetic trip unit provides fixed overload protection at Ir = 63 A and fixed short-circuit protection at Ii = 10 × In (630 A instantaneous pickup). This variant includes a nut keeper kit and is configured for DC Power OEM applications in China. The FTFM designation indicates a front-terminal, front-mounting arrangement — the line and load connections are accessible from the front of the breaker, which simplifies busbar routing and panel wiring in a standard distribution board.
What the ratings mean for panel fit
The 63 A continuous rating and 36 kA interrupting capacity at 415 V make this breaker suited for main or feeder protection in IEC distribution panels where the available fault current is known to be at or below that level. The fixed Ir = 63 A means the overload pickup is not adjustable — if the downstream load draws less than 63 A full-load, the breaker still protects the cable at its rated ampacity, but the coordination study should confirm the fixed trip point matches the load profile. The fixed Ii = 10 × In (630 A) instantaneous setting is typical for motor branch circuits where short-circuit protection needs to ride through the inrush without nuisance tripping.