Current Limiter for Motor Branch Circuits
The Siemens 3VU9138-2AB00 is a current limiter rated 32 A at 400 V, with one normally-open and one normally-closed auxiliary contact block. It mounts in the 3VU13 series frame and serves as a short-circuit protective device in motor branch circuits, limiting let-through energy to protect downstream contactors and overload relays.