The DS-1 is a diode shunt for terminating style-C track circuits. It features rugged packaging and high visibility. Install the DS-1 right in the ballast to reduce accidental damage.

The DS-1 is optimized for superior performance with Style Z track circuit. It is compatible with other style-C equipment including AC-DC track circuits.

Reflective label

Mounts top or side of tie

Improved surge protection

All internal circuits completely encapsulated

Resistant to damage

Optimized for Style Z track circuits

Color coded track leads (5FT, #6 bond strand RED and 5FT, #6 bond strand black)

Improved track cable entry support

P/N 21427-1
(Page updated July 2021)