Breaking capacity and protection settings
The Siemens 3VA1196-6EF32-0AA0-ZD00 is a 3-pole IEC frame 160 circuit breaker from the 3VA1 series, rated with a breaking capacity class H delivering an Icu of 70kA at 415V — that means it can safely interrupt fault currents up to 70,000 amps without welding its contacts or cascading failure upstream, which is critical for high-fault installations like transformer secondaries or large motor control centers. The TM240 line protection trip unit gives you an adjustable overload protection range (Ir) from 11A to 16A, with the fixed In at 16A, and short-circuit protection (Ii) adjustable from 10 to 20 times In — so for a 16A breaker, that's 160A to 320A magnetic trip. This lets you coordinate selectivity with downstream breakers and avoid nuisance trips on motor inrush.