PROTO 1000
PROTO 1000 ALCO RS-2 (Standard DC) - Boston & Maine No. 1503
Different road number shown
Mt. Penelope Railway Seal of Approval
PROTO 1000
HO Scale
DC (w/DCC Plug)

ALCO RS-2
(Standard DC)


Boston & Maine  No. 1503



Diesel Roadswitcher For Transition-Era Railroads!


The RS-2 was ALCO's first roadswitcher to incorporate its new 244-Series prime mover.

The 1,500-horsepower units were designed for versatility - they were equally at home working road freights or switch runs.

If equipped with a steam generator, they were adept at working commuter and secondary passenger runs.

Production began in 1946 with just over 350 units constructed for U.S. and Canadian roads before the unit was succeeded by the 1,600-horsepower RS-3 in 1950 (although a few late RS-2s were rated at 1,600 horsepower).

RS-2s have worked for Class I, shortline and industrial lines across the continent.

The engines have been long lived, with one survivor still holding down daily freight duties in 2007.

A few others still see service at museum and tourist lines.

  • Heavy die cast chassis
  • Factory-installed 9-pin DCC harness
  • 14:1 gear ratio helical-cut gears for quiet operation
  • Easy multiple unit operation with PROTO 2000 locos
  • Five-pole skew-wound motor
  • All-wheel drive and electrical pickup
  • Dual machined brass flywheels
  • RP-25 contour blackened wheels
  • Proto MAX™ metal knuckle couplers
  • Constant and directional headlights
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P1-920-35136
ALCO RS-2
(Standard DC)
Boston & Maine
No. 1503
Our Price: $86.39
MSRP: $99.98

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