The Siemens 3VA1163-6EF42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker with a 63 A thermal-magnetic trip unit (TM240, ATAM). Its headline rating is the 70 kA breaking capacity at 415 V (class H), which means it can safely interrupt fault currents up to that level on a 415 V three-phase system without upstream coordination failure — a key spec for panel builders targeting high-fault industrial mains.
The breaker includes a nut keeper kit for DC Power OEM in China — a mounting accessory that simplifies panel integration for OEM builds. The N conductor is unprotected, so this variant is intended for three-phase systems where the neutral is not switched or protected.