Train types
Slug units
20 models from 13 manufacturers
Models
20
Manufacturers
13
Top speed
126 km/h
GP30 Slug
A slug is a locomotive unit fitted with traction motors but without a prime mover. It receives electric power from a coupled “mother” locomotive, adding tractive effort at low speed for yard work, hump shunting or heavy trains on steep grades. Slugs are mainly used in North America.
Slug units
ALCo
ALCo MT4
Slug unit
ALCo
S6 Slug
Slug unit
ATSF
Drone
Slug unit
Darby Corporation
Slug
Slug unit
EMD
Drone
Slug unit
EMD
GP30 Slug
Slug unit
126 km/h
EMD
GP40 Slug
Slug unit
EMD
Slug
Slug unit
EMD
PS6B
Slug unit
EMD
SW9 Slug
Slug unit
1952
GMD
GP30 Slug
Slug unit
126 km/h
GMD
GP40 Slug
Slug unit
Illinois Central
SW9 Slug
Slug unit
1952
Krauss-Maffei
SW9 Slug
Slug unit
1952
MARUB
WPZ/UYPZ
Slug unit
1968–1972 · 80 km/h
MEI
PS6B
Slug unit
MK
S6 Slug
Slug unit
Morrison-Knudsen
MKA BU Class
Slug unit
NW
RP-G4
Slug unit
1977
Vagonka Studenka
SW9 Slug
Slug unit
1952