little engines

Track Signals

These high quality three-lamp signal heads are injection-molded from black, UV-resistant ABS plastic making them very durable. They are perfect for locations where the signal might get hit by track crews, bystanders, etc. - in other words everywhere. The target is 3" x 6" overall with 5/8" lamp openings on 1" centers.

Behind the target face are CNC machined Fresnel lenses, not just frosted plastic. These lenses widen the beam viewing angle and eliminate the harshness of bare LED lamps used by some. The LED holder behind the target is also injection molded from ABS plastic.

The entire head assembly fits into a standard 1/2" PVC or metal conduit box (not supplied).

The three super bright 10mm LEDs are mounted on a custom printed circuit board. The LEDs are bright enough to be clearly visible even in full daylight.

There is a four pin connector that accepts the supplied plug to connect the head to field wiring (crimp or solder). The connector is designed to slide partially into the conduit used to mount the signal head.

Options (contact us for more info):

  • A different operating voltage other than 12 volts DC can be requested (from about 3vdc on up, AC or DC).
  • Heads can be supplied in "Common Negative" configuration as opposed to the standard "Common Positive" configuration.
  • Any combination of red, amber, green, and white lamps.
  • Heads can be supplied with reversed lamp sequence and connector mounting suitable for use in a top-feed configuration (i.e.: signal bridges, etc.) as opposed to the standard bottom-feed configuration (green at the top and the connector at the bottom).
  • Plug with 36" cable already attached (other lengths available).
  • The head can be supplied with a different connection such as solder connection, miniature screw terminal blocks, etc.
  • Quantity discounts available.
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Printed Circuit Board Target Face Target, edge view
showing LEDs mounted
Example mountings Example mountings
(close-up)

 

Part Number

Description

SH-301-12

Three Lamp Head Assembly
3" x 6", ABS, 5/8" lamp openings on 1" centers, complete, ready to mount in 1" conduit box (not included), supplied with mating solderless plug, LEDs: green, yellow, red (top to bottom), 12vdc, common positive. Other voltages, surge protection, etc. available as options. $55.00

SH-302-12

Three Lamp Head Assembly, Small
Same as SH-301-12 except target face is 4.352" x 2". $55.00

SH-303

Three Lamp Head Assembly, No Lamps
3" x 6", ABS, 5/8" lamp openings on 1" centers, no lamps or LED assembly. $35.00

SH-304

Three Lamp Head Assembly, Small, No Lamps
Same as SH-303 except target face is 4.352" x 2". $35.00

SH-310

Three Lamp LED Assembly
Printed circuit board with three 10mm LEDs, current limiting resistors, etc. supplied with mating solderless plug, LEDs: green, yellow, red (top to bottom), 12vdc, common positive. Other voltages, surge protection, etc. available as options. $25.00