What this 3VA1 breaker is and what it does
The Siemens 3VA1116-5ED32-0AA0-ZD00 is a 3VA1 IEC frame 160 molded-case circuit breaker, 3-pole, with a 55 kA Icu at 415 V — that is the breaking capacity class M rating, meaning it can safely interrupt a fault current up to 55,000 A at that voltage without external fuses or cascading upstream. It is configured for line protection with a TM210 thermal-magnetic trip unit: fixed overload protection at Ir = 160 A and fixed short-circuit protection at Ii = 10 x In, so the magnetic pickup fires at 1,600 A. The nut keeper kit is included for DC Power OEM builds in China.