Zinsco replacement circuit breakers are of a unique design that only fit into load centers (no longer made) that may be labeled Challenger, Sylvania, or Zinsco.
Number of Poles: Twin 1-Pole
Interruption Type: Standard Trip
Frame Size: 1-Space
Breaker Size: 3/4 In.
Mount Type: Z Plug-In For Zinsco RC Series
Certification: UL Listed
Warning: This product can expose you to chemicals including Nickle which is known to the State of California to cause cancer. -