The SS5 Bo-Bo electric never went into series production. It appears to be a passenger-geared, double-ended, single-unit development of the SS4 double-unit freight electric with a maximum speed of 140km/h and power of 3200kW.
Two SS5s were builtby Zhuzhou in 1991 and this one, SS5.0001, ended up in the Beijing Railway Museum, where it was photographed on 22 October 2008.