SU45
SU45-079 locomotive at Wrocław Główny railway station
Type and origin Power type Diesel Builder Cegielski Build date 1970-1976 Total produced 265
Specifications Configuration: ​  • UIC Co′Co′ Gauge 1,435 mm (4 ft 8+1⁄2 in) standard gauge Driver dia. 1,100 mm (43.31 in) Wheelbase 3 900 mm Length 18,990 mm (62 ft 3+5⁄8 in) Width 3,900 mm (12 ft 9+1⁄2 in) Height 4,288 mm (14 ft 7⁄8 in) Loco weight 102 t (100 long tons; 112 short tons) Fuel type Diesel Fuel capacity 3,500 L (770 imp gal; 920 US gal) Engine type 2112SSF Cylinders 12 Cylinder size 210 mm (8.27 in) (x ?) Transmission Electric Loco brake Oerlikon
Performance figures Maximum speed 120 km/h (75 mph) Power output 1,750 hp (1,300 kW) Tractive effort 320 kN (72,000 lbf)
Career Operators PKP Class SU45 Official name HCP 301D Nicknames Fiat Locale Polish State Railways Polregio PKP Cargo other private owners Delivered 1970 First run 1967 Disposition 3 in service

SU45 is a Polish diesel locomotive. It had been made for universal use: heavy transport or passenger transport alike.

This locomotive is in fact a SP45 with a modified heating system – a steam boiler was replaced by an electric heating system. During 2010 4 locomotives were rebuilt to class ST45.

Currently, there are three SU45 locomotives in operation. Vehicles number 143 and 194 operate freight depots, and vehicle number 079 was repaired in 2022 and returned to service. It is stationed in Wrocław and runs tourist passenger trains. Currently, it is planned to restore vehicle number 228 purchased by the Association of Railway Enthusiasts in Chojnice from PKP Cargo to traffic. The vehicle is to be renovated and used to operate tourist passenger trains.

These locos used to be called by the following names:

• Fiat - because of the diesel engine licensed by Fiat
• Suka (eng. bitch) - from the two first letters of the code name

• Polish locomotives designation

• Modern Locos Gallery
• Rail Service
• Mikoleje
• Chabówka Rail Museum