Atlas N S-4 Locomotive

Alco introduced the S-4 in 1950. The S-4 like the earlier S-2 was a 1000 horsepower switcher. Some 636 S-4’s were built for North American railroads. The primary quick spotting difference between the S-1/S-2 and the S-3/S-4 can be seen in the trucks. The S-1/S-2 has Blunt trucks, while the S-3/S-4 has AAR-style trucks. The versatility of the S-2’s and S-4’s were evidenced by their service in mainline railroads, shortlines, and industrials.

Features:

  • Scaled from actual prototype measurements
  • 2 cab variations - riveted or welded
  • Option for horizontal or vertical radiator shutters
  • Fine scale handrails
  • Separately-applied coupler cut levers, air hoses, piping, etc.
  • Directional LED lighting (includes cab rear headlight)
  • Die-cast hood & chassis for improved pulling performance
  • Dual-flywheels for maximum performance at all speeds
  • Factory-equipped with AccuMate® knuckle couplers
  • Exceptional painting and printing
  • Atlas Master® Gold version features ESU LokSound Decoder

DCC Operation Features :

  • Supports all DCC-programming modes
  • Flexible mapping of function keys F0 to F28.
  • A total of 4 DCC function outputs are available
  • Follows all NMRA DCC standards and recommended practices.

Sound Functionality Features (GOLD LOCOMOTIVES ONLY):

  • Over 20 sound effects are available, including engine start-up and shutdown, prime mover sounds through all eight notches, bell, air horn, air compressor, dynamic brakes and more.
  • There are 16 user-selectable horns, 2 user-selectable bells, and 2 user-selectable synchronized brake squeals.
  • Manual and Automatic Notching modes with the ability to change modes ”on the fly” are provided for true realism.

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Standard Item# Road Name Road Number DCC Item#
November 2025
Silver MSRP: $149.95 Gold MSRP: $269.95
N S-4 Locomotive
40 006 337 Candian National ((Black/Red/White) 8149 40 006 352
40 006 338 Candian National ((Black/Red/White) 8152 40 006 353
40 006 339 Chessie System (B&O) (Yellow/Blue/Vermillion) 9007 40 006 354
40 006 340 Chessie System (B&O) (Yellow/Blue/Vermillion) 9010 40 006 355
40 006 341 Maine Central (Green/Gold) 313 40 006 356
40 006 342 Maine Central (Green/Gold) 317 40 006 357
40 006 343 Milwaukee Road (Orange/Black) 813 40 006 358
40 006 344 Milwaukee Road (Orange/Black) 819 40 006 359
40 006 345 Morristown & Erie (Red/White) 14 40 006 360
40 006 346 Norfolk & Western (Blue/Yellow) 2060 40 006 361
40 006 347 Norfolk & Western (Blue/Yellow) 2076 40 006 362
40 006 348 Union Pacific (Yellow/Gray) 1171 40 006 363
40 006 349 Union Pacific (Yellow/Gray) 1184 40 006 364
40 006 350 Western Pacific (Silver/Orange) 563 40 006 365
40 006 351 Western Pacific (Silver/Orange) 564 40 006 366
Products bearing Union Pacific (UP) marks and Western Pacific marks are made under trademark license from Union Pacific Railroad Company.
November 2020
Silver Undec MSRP: $124.95 Gold Undec MSRP: $234.95
Silver MSRP: $134.95 Gold MSRP: $244.95
N S-4 Locomotive
40 004 996 Undecorated (vertical shutters) - 40 005 011
New Model!
40 004 997 Baltimore & Ohio* (Blue/Yellow) 9104 40 005 012
40 004 998 Baltimore & Ohio* (Blue/Yellow) 9107 40 005 013
40 004 999 CP Rail (Red/Black/White) 7113 40 005 014
40 005 000 CP Rail (Red/Black/White) 7117 40 005 015
40 005 001 Grand Trunk Western (Black/Red) 8200 40 005 016
40 005 002 Grand Trunk Western (Black/Red) 8204 40 005 017
40 005 003 Pennsylvania (Dark Green/Yellow) 8430 40 005 018
40 005 004 Pennsylvania (Dark Green/Yellow) 8434 40 005 019
40 005 005 Santa Fe (Blue/Yellow) 1517 40 005 020
40 005 006 Santa Fe (Blue/Yellow) 1522 40 005 021
40 005 007 Southern Pacific (Black/Orange) 1474 40 005 022
40 005 008 Southern Pacific (Black/Orange) 1477 40 005 023
40 005 009 Boston & Maine (Black/Red/White) 1266 40 005 024
40 005 010 Boston & Maine (Black/Red/White) 1271 40 005 025