What this breaker carries and where it fits
The Siemens 3VA1112-6EF32-0KC0 is a 3-pole IEC frame 160 molded-case circuit breaker in breaking capacity class H, rated to interrupt 70 kA at 415 V AC. That rating means it can clear a fault up to 70,000 A without welding or rupturing — essential for high-fault installations like transformer secondaries or large motor control centers where available short-circuit current is substantial. Overload protection uses a TM240 thermal-magnetic trip unit with an adjustable Ir range of 88 A to 125 A, so you set the continuous current to match the downstream load. Short-circuit magnetic pickup (Ii) adjusts from 5× to 10× In — 625 A to 1250 A at the 125 A setting — letting you coordinate selectively with downstream branch breakers. The breaker ships with a shunt trip (STL) rated for both 220–250 V DC and 208–277 V AC, plus two HQ auxiliary switches for remote status indication. A nut keeper kit is included for secure mounting in the panel.
Lifecycle and sourcing posture
For a critical-spare holding or a new panel build, the part is sourced to order against an RFQ. Availability and current pricing are confirmed at quote time through independent distribution.
Integration notes for the panel builder
Mounts on a standard DIN rail or directly to the backplate via the included nut keeper kit. The 3-pole footprint fits the 160 A frame size; verify busbar or cable lug clearance for the line and load terminals before finalizing the enclosure layout. The shunt trip coil draws from either a 220–250 V DC supply or a 208–277 V AC control circuit — no separate power supply needed if the panel already carries one of those voltages. Wire the auxiliary switches (HQ type) to the PLC or annunciator inputs for breaker status feedback.