The Siemens 3VA1112-3EF32-0AA0-ZD00 is a 3-pole IEC frame 160 circuit breaker from the 3VA1 series, rated at In=125A with a breaking capacity class N delivering Icu=25kA at 415V. Overload protection is adjustable via the TM240 thermal-magnetic trip unit from Ir=88A up to 125A, and short-circuit protection (Ii) is set at 5 to 10 times In. This variant includes a nut keeper kit and is configured for a DC Power OEM in China.
What the Ratings Mean
The Icu=25kA at 415V is the maximum short-circuit current the breaker can interrupt. The adjustable Ir range (88A to 125A) matches the thermal trip to the load current without changing the breaker body.