Fink Bonder®


Fink Bonder Test Station

The FinkBonder® resistance bonding circuit, factory installed in Cott’s BigFink® electrical enclosure, is a field proven versatile and inexpensive method for reducing or eliminating stray current interference from cathodic protection installations. Made by Cott Manufacturing company and readily available worldwide from Cott distributors, FinkBonder® resistance bond circuits are custom designed to combat stray currents at:

  • Foreign pipeline crossings.
  • Deep production or storage well and gathering system interface.
  • Direct current transit, mining or industrial sites.
  • High voltage D.C. transmission systems.
  • Foreign pipeline/CP anode ground bed junctions.

The BigFink® enclosure is molded of Lexan®, one of the world’s toughest plastics – protects resistors, shunts, meters and other circuit components from accidental damage or environmental attack. (Perfect for H2S or seawater exposure.)

installed finkbonder

  • Four times the impact strength of aluminum.
  • One-half the weight of aluminum.
  • One-eight the weight of steel.
  • Will not rust, corrode, shock, shatter, peel or absorb heat.
  • Maintenance free – no painting.
  • Has dimensional and electrical stability from -60 degrees F. to +250 degrees F.
  • Stable under ultraviolet attack.
  • Non-metallic design greatly reduces shock hazard.


  • All Fink® resistance bond enclosures can be mounted on 3″, 2″, 1-1/4″ or 3/4″ CottPipe® or on specially designed Cott brackets (304 stainless or PVC fluidized bed coated carbon steel) that mount to any flange, wall or post.
  • Compact design (3″x5″) is perfect for restricted space applications.
  • Mounting brackets are predrilled for lead wire access – all holes have grommets – self-contained shield prevents insect infestation.


  • Each custom designed factory assembled circuit is fully tested and ready for installation (over 50 standard models available).
  • Electrical connections are all hard soldered.
  • Calibrated heat sinks installed during assembly.
  • All hardware and connectors are nickel plated brass for long service life.
  • Conforms to NEMA specifications. Can be ordered with an integral locking device.

Red,  Orange,  Yellow,  Green,  Blue,  White,  Black,
are standard on Big Bonder®
Any color is available as an option.

Mounting Brackets
PVC fluid bed coated, carbon steel (304 stainless steel optional).

Fink® Enclosures: Lexan®
Machine screws, washers, hexnuts and wire connectors – nickel plated brass (stainless steel optional).

Ultraviolet stabilized high density polyethylene available in a variety of colors to match Fink® enclosures.


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