Gte sylvania zinsco electrical panels and circuit breakers use a thin vertical bus bar and deep slots into the connecting circuit breaker to form a connection that corrodes arc burns overheats and is unreliable.
Zinsco circuit breaker cross reference.
On 2017 10 08 by mod magnatrip zinsco circuit breaker body has always been black.
You can check under the panel column for compatible eaton ul classified breakers.
Photo of a recent gte sylvania zinsco circuit breaker burn up courtesy of jeff weissman.
Re posting without joe s advertisement joe jrl electric supply said.
Below is a close up of the bus connection end of a classic zinsco circuit breaker showing the difference between these devices.
These panels and circuit breakers are in our opinion unsafe and should be replaced.
There are charts that show what circuit breakers are interchangeable.
For instance the chart below shows an example of a cross reference of type cl 1 breakers that could be interchangeable for panel installations.
If you are speaking of the original magnatrip zinsco circuit breakers the body has always been black unless it is the current replacement that is grey manufactured by ubi.
Zinsco electrical panels were distributed in the united states primarily in the western states.
The home reference book.