The Siemens 3VA1116-6EF32-0CC0 is a 3-pole IEC frame 160 molded-case circuit breaker in breaking capacity class H, rated Icu=70kA at 415V AC. That 70kA interrupting rating means it handles high fault currents typical in industrial distribution — no cascading upstream breakers needed at that level. The TM240 thermal-magnetic trip unit gives adjustable overload protection from 112A to 160A (Ir) and short-circuit pickup (Ii) from 5 to 10 times In, so you dial in the protection curve for the load, not the other way around.
What the ratings mean for fit
The 70kA Icu at 415V is the maximum short-circuit current the breaker can safely interrupt once — that's the 'H' class mark. For selectivity studies, you compare this with the upstream device's let-through: a 70kA rating at 415V gives solid headroom for most secondary distribution panels. The TM240 trip is line-protection (not motor-protection) so it's sized for cable and busbar protection, not for overload relay coordination on a motor starter. The undervoltage release (UVR) operates on 120-127V AC 50/60Hz — it trips the breaker when control voltage drops below the dropout threshold, standard for emergency-stop or undervoltage protection schemes. Two HQ auxiliary switches give status feedback to the PLC or annunciator panel.
Deployment context
Mounts on a standard DIN rail in the enclosure — the nut keeper kit keeps the busbar connections torqued and stable during vibration. The UVR and aux switches are factory-integrated; no field wiring of add-on modules. Typical placement: main incoming breaker in a 160A-rated sub-distribution board or as a feeder breaker in a motor control center bucket.