Atlas HO Code 100 #4 Customline Mark V Turnout – Right – ATL392

Atlas HO Code 100 #4 Customline Mark V Turnout – Right – ATL392 is a compact right-hand turnout designed for HO scale yards, industrial sidings, switching areas and other track arrangements where space-efficient routing is important. Its #4 turnout geometry creates a tighter diverging route than broader #6 or #8 turnouts, allowing model railroaders to fit switches and branching tracks into smaller spaces.

Part of the Atlas HO Code 100 track system, ATL392 features solid nickel silver Code 100 rail with black injection-molded plastic ties. The Custom-Line design also incorporates a metal frog that can be electrically powered when desired.

What Does #4 Turnout Mean?

The #4 designation refers to the turnout's frog geometry. In simplified terms, a #4 frog spreads approximately one unit sideways for every four units traveled forward through the frog area.

Compared with a higher-number turnout such as a #6 or #8, a #4 turnout changes direction more quickly and requires less overall layout space. This makes #4 geometry especially useful for yards, industrial switching areas, locomotive facilities, storage tracks and compact sidings.

Right-Hand Turnout

ATL392 is a right-hand turnout. When approaching the turnout from the single-track or point end, the straight route continues ahead while the diverging route branches toward the right.

This makes ATL392 the right-hand counterpart to the ATL391 left-hand #4 Mark V turnout, allowing model railroaders to create branching routes in either direction.

Atlas Customline Mark V Design

The Atlas Mark V turnout continues the company's established HO Code 100 Custom-Line system while providing a modern turnout option for new layouts and existing Atlas Code 100 trackwork.

Its metal frog can be powered if necessary, providing model railroaders with the option of supplying electrical power through the frog when their layout wiring and operating requirements call for it.

Powerable Metal Frog

The frog is the portion of a turnout where the rails of the two routes intersect. Atlas uses a metal frog on its Code 100 Custom-Line turnout, and the frog can be electrically powered when desired.

A powered frog can help maintain electrical pickup as locomotives travel through the turnout, which can be particularly useful for locomotives with shorter wheelbases or limited electrical pickup. The exact wiring arrangement will depend on the layout's electrical and turnout-control system.

Atlas HO Code 100 #4 Mark V Right Turnout Features

• HO Scale model railroad turnout
• #4 turnout geometry
• Right-hand configuration
• Atlas Customline Mark V design
• Compact diverging geometry
• Ideal for yards, sidings and industrial switching areas
• Metal frog
• Frog can be electrically powered if desired
• Code 100 rail profile
• Solid nickel silver rail
• Black injection-molded plastic ties
• Designed for Atlas HO Code 100 track systems
• Connects with compatible Atlas HO Code 100 track
• Atlas manufacturer item number 0392
• Fusion Scale Hobbies SKU ATL392

Ideal for Yards, Sidings & Industrial Track

The relatively compact #4 geometry makes ATL392 particularly useful when the goal is to fit more operational track into a limited area. It can be used for yard ladders, industrial spurs, locomotive facilities, storage tracks and compact passing sidings.

For visible mainlines or routes regularly handling longer locomotives and rolling stock, broader #6 or #8 turnout geometry may be preferable when sufficient space is available.

#4 Customline Turnout vs. Atlas Snap-Switch

An Atlas #4 Customline turnout and an Atlas Snap-Switch are not the same track component. Although both can be used to create branching routes, their geometry differs, and Atlas specifically notes that they are not interchangeable in Atlas layout plans.

If you are building from an existing Atlas track plan, make sure the plan specifically calls for a #4 Customline turnout before substituting ATL392 for another type of switch.

Plan & Test Your Turnout Installation

Because #4 turnout geometry is relatively compact, always consider the operating requirements of your locomotives and rolling stock. Longer locomotives, passenger cars and other large equipment may perform better through broader turnout geometry.

Test your intended equipment through both the straight and diverging routes before permanently securing, ballasting or weathering the turnout.

Build with Atlas HO Code 100 Turnouts

Browse our complete Atlas HO Code 100 Turnouts & Switches collection for additional turnout sizes and configurations for yards, sidings, industrial tracks and mainlines.

Combine this turnout with products from our Atlas HO Code 100 Track collection to build or expand a complete HO scale track system.

Complete Your Trackwork

Use Atlas HO Code 100 Flex Track for custom track alignment around yards and industrial areas, or combine the turnout with Atlas HO Code 100 Straight Track and Atlas HO Code 100 Curved Track.

Browse Atlas HO Switch Machines for turnout-control components and additional options for operating Atlas HO switches.

HO Scale Track Installation Supplies

For rail joiners, terminal connections, track nails and other installation components, browse Atlas HO Track Accessories.

Atlas Code 100 track can also be installed over Atlas HO Cork Roadbed to provide a raised track profile and foundation for ballast and finished scenery.

Shop HO Scale Model Railroad Track

Explore our complete Atlas HO Scale Track selection or browse Model Railroad Track for additional track systems, turnouts and layout-building components.

Shop additional products from Atlas Model Railroad and browse Atlas In-Stock Products.