CSC-150 Busbar Protection IED is selective, reliable and high speed distributed busbar protection IED with powerful capability with following advanced features: 1) For Various busbar or breaker arrangement; 2) Up to 40 bays 3) Fully proven protection functions library; 4) Powerful scalable hardware capability, for present and future application: Mixable CT&VT inputs/SV(Sampling Value) input/output; Mixable Binary inputs & output relays / GOOSE inputs/outputs; 5) Robust hardware with excellent EMC performance and IP54 protection under -40℃ to 70℃ operating temperature; 6) CSC- works as the bay unit of the distributed busbar protection system, not bay unit only,  but also feeder protection IED.