It’s ideally suited for protection of laterals that experience frequent momentary faults. This self-powered, electronically controlled, single-phase vacuum fault interrupter is available for installation in new or existing current-production (“R10”) S&C Type XS Fuse cutout mountings.A two-insulator, branch-feeder style mounting is also available.TripSaver eliminates the permanent outage which results when the lateral fuse operates in response to a momentary fault. Utilities using “fuse blowing” will see an improvement in SAIFI without sacrificing MAIFI and TripSaver eliminates the momentary interruption on the feeder in instances where the breaker is tripped to save the lateral fuse during a momentary fault. Utilities using “fuse saving” will see an improvement in MAIFI without sacrificing SAIFI.

• Birdproof-design insulator—higher insulation characteristics than ANSI distribution-cutout standards. Porcelain insulator shown; composite-polymer silicone insulator also available. NEMA Type B and extended mounting brackets are available too.
• Parallel-groove connector—tin-plated cast red brass. For ease of connection, accommodates two conductors, even of unlike size.Other types of connectors are also available.
• Upper contact—silver-to-silver; stainless-steel spring provides high contact pressure.
• Rugged attachment hooks for Loadbuster—guide TripSaver during closing.
• Vacuum fault interrupter.
• Lower contacts (not visible)—silver-to-silver; provide dual current path,independent of hinge pivot
• Trunnion—high-strength cast bronze, silver plated. Surfaces around trunnion bear on broad hinge surfaces to keep TripSaver in alignment during closing
• Mode selector— for selecting automatic reclosing or non-reclosing operation. Non-reclosing mode has one-shot-to-lockout operation, suitable for use when crews are working downstream of the TripSaver.