What this 3VA1 breaker carries
The Siemens 3VA1110-5MH32-0KA0 is a 3-pole IEC molded case circuit breaker on the 160 A frame, rated 100 A continuous with a 55 kA breaking capacity (Icu) at 415 V AC — class M, meaning it handles moderate fault levels typical of industrial distribution and motor branch circuits without requiring a current-limiting upstream device. The TM120M thermal-magnetic trip unit provides starter protection: the thermal element tracks motor heating curves, while the magnetic short-circuit pickup is adjustable from 5 to 15 x In. It ships with a factory-installed shunt trip (STL) rated 220–250 V DC or 208–277 V AC, plus a nut keeper kit for secure terminal retention — both reduce field assembly steps.
What the ratings mean for fit
The 55 kA Icu at 415 V AC means this breaker can safely interrupt a fault up to that level without external fusing or a current-limiting upstream breaker — a direct fit for panels where the available fault current sits at or below that threshold. The adjustable Ii range (5–15 x In) lets you set the magnetic trip high enough to avoid nuisance trips on motor inrush while still protecting the cable against bolted faults.
Panel integration notes
Mounts on a standard DIN rail or direct-panel via the 160 A frame footprint — the nut keeper kit included with this variant holds terminal screws captive during wiring, a practical detail for panel builders working in tight enclosures. The shunt trip coil draws on the control circuit (220–250 V DC or 208–277 V AC); verify the control transformer and fuse sizing can support the inrush without dropping below the dropout voltage of the coil.