Most locomotives are fitted with air brakes to allow them to operate passenger trains.
All locomotives are fitted with a variety of appliances.
These locomotives were also fitted with Ross pop safety valves as built.
The locomotives were fitted with vacuum control gear for working motor trains.
As a unique example, locomotive no 129 was fitted with a preheater.
The first two locomotives were fitted with communication doors on the cab fronts.
This locomotive was fitted with slightly larger 7 ft 6 in driving wheels.
Unlike the earlier E401 class, these locomotives were fitted for multiple operation.
By about 1880 around 900 German locomotives had been fitted with condensing apparatus.
Unusually, the locomotive was fitted with a larger 4000 gallon water tender.