Zinsco RC38-60 Miniature Circuit Breaker

The Connecticut Electric UBIZ0260 is the direct modern replacement for the obsolete Zinsco RC38-60. It is specifically manufactured to fit legacy Zinsco load centers and provides a safer alternative to original vintage breakers.

The RC38 series features a space-saving thin design, allowing a 2-pole breaker to fit into a single standard panel slot. The QC series are full-size 2-pole breakers that require two standard spaces on the busbar.

Yes. Original Zinsco panels and breakers have well-documented safety hazards. The breakers can fail to trip during an overload, and the connection clips can degrade, causing arcing or welding to the busbar. Inspect the panel busbar carefully before installing any replacement breaker.

The RC38-60 uses a plug-on connection with clips that slide directly onto the panel busbar. Because legacy Zinsco panels are prone to busbar corrosion and arcing damage, the busbar must be thoroughly inspected for pitting or melting before seating a new breaker.

It utilizes a fixed thermal-magnetic trip mechanism. The thermal component provides long-time protection against gradual overloads, while the magnetic component delivers instantaneous tripping for severe short circuits.