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TE's Raychem BISG discs have been successfully eliminating outages from squirrels, raccoons, opossums, cats, and other animals in substations for years. The BISG animal guard has been designed to provide the same great protection with added features. Its “invisible” design allows easier visibility of switch blades and other equipment components through the guard. This new design allows for easy field modifications and can be reduced by trimming along the grill ribs for tight phase-to-phase insulator applications.


  • Easy to install on bus and switch insulators
  • Excellent tracking resistance
  • UV-resistant polymeric
  • Ensures long-term performance even in the most extreme environmental conditions
  • Energized installation capable
  • Range taking 25-125mm (1.0”-5.0”)  core diameter


Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Material System  Crosslinked Polyethylene

  • Technology  Cold Applied De-energised, Cold Applied Energised Installation

  • Product Type  Isolation Guard

  • Insulator Type  Porcelain/Glass/Polymeric

Configuration Features

  • Visual Inspection  Yes

Body Features

  • Color  Gray, Red


  • Insulator Core Diameter Range (mm) 25 – 115, 62 – 125

  • Insulator Core Diameter Range (in) 1 – 4.5, 2.5 – 5


  • Halogen Free  Yes

  • Application Type  Substation Animal Barrier

  • Energized Installation  Yes

Industry Standards

  • RUS Approved  Yes

Product Availability

  • Product Availability  Americas, ANZPAC, Asia, China, EMEA

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This information has been provided to your free of charge for your use but remains the sole property of TE Connectivity Corporation (''TE'') or SnapEDA,  Inc. or Ultra Librarian/EMA Design Automation, Inc. (collectively, "Company"). While Company has used reasonable efforts to ensure its accuracy, Company does not guarantee that it is error-free, not makes any other representation, warranty, or guarantee that the information is completely accurate or up-to-date. In many cases, the CAD data has been simplified to remove proprietary detail while maintaining critical interface geometric detail for use by customers. Company expressly disclaims all implied warranties regarding this information, including but not limited to any implied warranties or merchantability or fitness for a particular purpose.