Part identity and key ratings
The Siemens 3VA1116-5EF32-0KF0 is a 3VA1 IEC frame 160 molded case circuit breaker (MCCB) with a 55 kA breaking capacity at 415 V — class M, meaning it handles medium-to-high fault currents typical of industrial distribution panels and motor control centers. Three-pole, thermal-magnetic TM240 trip unit, rated In=160 A with overload protection adjustable Ir=112…160 A and short-circuit protection Ii=5…10 × In. This order code includes a factory-fitted shunt trip left-side accessory rated 208–277 V AC 50/60 Hz or 220–250 V DC, plus one auxiliary switch changeover contact — so it arrives ready for remote tripping and status feedback without additional wiring of add-on modules.
What the ratings mean for panel fit
The 55 kA Icu at 415 V means this breaker safely interrupts a fault current up to that level without welding contacts or rupturing the case — critical for panel SCCR compliance when the available fault current at the service entrance is in that range. The TM240 thermal-magnetic trip provides inverse-time overload protection (Ir adjustable 112–160 A) plus instantaneous magnetic short-circuit pickup (Ii 5–10×In), covering cable protection and moderate motor-starting inrush without nuisance tripping. Mounts on a standard DIN rail or panel-mount base within the 3VA1 frame footprint. The integrated shunt trip and auxiliary switch reduce wiring labor and panel space compared to field-installed accessories.