Products Compact Substation (CSS) Acton is unique in design and construction, compact & well engineered. It has been tried, tested & found to be extremely reliable & consistent in delivering optimum performance. The C.S.S is compartmentalized into 4 sections Features 1) 11KV Metering compartment.2) HT switchgear compartment.3) Transformer compartment. 4) LT switchgear compartment with metering