PHL LINKS™ MCCABE® RESETTABLE BI-METAL FIRE LINK is a UL 33 permanent replacement for fusible links and can provide heat detection signaling and operations. Utilizing a corrosion resistant, bi-metal configuration, the McCabe Link is always resettable and reusable after repeated testing – including routine system cycles or NFPA required periodic testing for safe functioning operating tests during inspection. Built-in delay reduces nuisance tripping is reduced (15-45 seconds vs. UL standard of 1 minute). Can be operated (repeatedly) three ways: Heat, Manually or Electrically.