What this breaker is and what the ratings mean
The Siemens 3VA1196-6ED42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker from the 3VA1 series, built for line protection with a fixed thermal-magnetic trip unit (TM210, FTFM). Its headline rating is the breaking capacity class H: Icu=70kA at 415V AC. That 70kA interrupting rating means it can safely clear fault currents up to 70,000 amps without welding contacts or rupturing the arc chamber — critical for high-capacity distribution panels where the available fault current is substantial. The 16A fixed overload protection (Ir=16A) and short-circuit protection set at 20 times In (Ii=20 x In) mean the breaker trips magnetically at 320A for a hard fault, while the thermal element handles sustained overloads. The N conductor is unprotected on this variant, and a nut keeper kit is included for DC Power OEM builds in China.
Deployment context
Mounts in a standard panel on a DIN rail or directly to a backplate via the frame's mounting points. The 4-pole configuration with unprotected neutral suits three-phase systems where the neutral is not switched — typical in IEC distribution boards feeding motor control centers or lighting panels. The 70kA SCCR at 415V provides headroom for high-fault installations without cascading upstream breakers.