Crossings – Train detection

Siemens Wide Band Shunts (WBS) Series introduces low impedance to all alternating current frequencies and high impedance to direct current energy – thus allowing the end user to properly terminate grade crossing approach circuits. Pre-wired internally using either #6 AWG copper wire or Erico brand bondstrand.

Siemens Narrow Band Shunts (NBS) Series introduces low impedance to a selected narrow band of alternating current frequencies and high impedance to direct current as well as all alternating current frequencies outside the selected band. This allows the end user to properly terminate grade crossing approach circuits.

Pre-wired internally using either #6 AWG copper wire or Erico brand bondstrand.

Siemens also offers a variety of industry standard frequencies to choose from, ranging from 86 Hz to 970 Hz. Some selected models offer additional benefits such as a higher than normal impedance or are designed for use in high power applications.

• Sealed in an ABS shell casing
• Available pre-wired internally with 10 ft (3 m) long leads using either #6 AWG copper wire or #6 Erico brand bondstrand
• Requires no specialized tuning

Siemens TS Series Test Shunts are portable track test shunts which combine greater ease of use with positive shunting.

Toggle clamps are used for quick attachment or removal to either the base or ball of the rail. These clamps provide a positive grip with a release lever for easy removal.

Hardened steel points bite through rust and scale for better electrical contact. Jaws are adjustable to accommodate any size of rail. Clamps of cadmium-plated steel, conductors of #6 copper cable with a neoprene jacket, and a center block of compression-molded, high-impact plastic allow the shunt to withstand rugged field use.

The center block contains a sealed 0.06 Ω resistor as well as two test links to provide an open circuit, zero resistance and 0.06 Ω shunting in the same unit.