The MS75 are 44 four-car electric multiple units of the Belgian railway company NMBS , built in 1975-77 and numbered in the series 801-844. The baggage area is located at the far end of the first class carriage. Due to the striking shape of the cabin, they are also called Pig's Nose.

They can also run in the Netherlands under 1500 volts, albeit at one quarter of their capacity, and are admitted for cross-border traffic on the Antwerp – Essen-Grens – Roosendaal section, where they operate in the S-service (i.e. the slow train service around the city) on line S32 Roosendaal – Antwerp Central – Antwerp South - Boom – Puurs .