Have you ever used another circuit breaker in the Panel with a different manufacturer?
However Siemens does not carry a GEFP or even a GFP breaker. Do you think a Eaton or Square D will fit in the panel will this void the UL approval?
GEFP?
Must be a new one on me...
16 GEFP Acronym Definitions
By Rank / Alphabetical
Georgia Education Finance Program
Glinodo Earth Force Programme
Glitter Egg Fluorescentffentliche Petition
Global Endowments, Foundations & Pension
Global Environment Facility Project
Golden Eagle FlightPrep Provides
Good Eats Fan Page
Gouvernance des Entreprises Familiales et Patrimoniales
Government Efficiency & Financial Planning
Government Efficiency and Financial Planning
Graduate Equity Fellowship Program
Green Engineering Flood Plain
Groupement des Enterprises Franches et Partenaires
Groupement des Entreprises Franches & Partenaires
Groupement des Entreprises Franches et Partenaires
Grupo Espa?ol de Farmacia Pedi?trica
Are you looking for ground fault breaker for a Siemens panelboard? Of course they make them. You must be searching using a term that they don't use.
But to answer your question, generally breaker manufacturers don't bother to go to the expense of listing their breakers to work in competitor's panels. The exception to that is residential commonplace breakers, just because the market is so large for them. but if it's anything remotely specialized that they can't sell a million of, they are not interested.