What this 3VA1 breaker carries
The Siemens 3VA1110-4GE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker with a 100 A rated current and a 36 kA breaking capacity at 415 V (class S). The TM220 thermal-magnetic trip unit gives overload protection adjustable from 70 A to 100 A, with fixed short-circuit protection at 10 x In. It also includes 100% N-conductor protection and a nut keeper kit, configured for DC Power OEM supply in China.
The adjustable Ir (70–100 A) lets you match the breaker to the actual load without changing the trip unit, which is useful when the same frame size covers multiple motor or feeder circuits.