Identifying MAGNE-BLAST Circuit Breaker Designations

General Electric produced a line of medium voltage air circuit breakers called the MAGNE- BLAST for over 30 years. The product line was very popular and was produced in a wide range of sizes and ratings to meet customer’s needs.

Particular attention needs to be paid to several parts of the nameplate when you’re looking for replacement MAGNE-BLAST breakers or parts for these GE circuit breakers. This flow chart was designed to streamline the specification process and help you identify your MAGNE-BLAST designation.

Image of a designation flowchart for MAGNE-BLAST circuit breakers.

Even with the flowchart, it can still be easy to miss specifics for designation There will be additional information you will need. Rated Amps, close and trip voltage, and mech type can all be found on the nameplate. When in doubt, a photo of the nameplate and a photo of the breaker from the front will give your supplier a clear understanding of what you need. The following photos of MAGNE-BLAST nameplates show how important details like the letter suffixes are in determining exactly what you need.

First nameplate image from a MAGNE-BLAST circuit breaker.
Second nameplate image from a MAGNE-BLAST circuit breaker.

Still confused? Contact us today with what information you have and we’ll help your figure it out. As a circuit breaker supplier, that’s what we’re here for.