What is the largest GFCI circuit-breaker (any company) that is "Class A" and available on the market right now? Is 60-amp the largest that comes as Class A?
That's a great question to be directed to the breaker manufacturer. I have seen 600A Class A GFCI breakers, but that does not rule out that larger breakers exist.
Here's a link to a manufacturer of larger ampere Class A GFCI breakers. https://www.carlingtech.com/sites/default/files/documents/Carling-Ground-Fault-CP-Catalog.pdf
Thanks. The info that I got back from Schneider today states that 60-amp is the largest class A. Here is what they say:
"Here are the highest amp rating for each size breaker.
QO130GFI (30A 1P)
QO260GFI (60A 2P)
QO350GFI (50A 3P)
IF the application is the 3P above 50A then a UL 943 or UL943C relay is needed then shunt trip the cb. The relays do meet the 4-6mA trip rating per UL943. The only 2 UL 943 listed devices that I know are Littlefuse and North Shore. Bender’s unit is no longer listed but they expect to have a UL listed device by Q12020.
If you have any questions, please let me know."
Littelfuse makes a line of them up to 100A that, if I understand the literature correctly, exceed the specifications of a Class A breaker. Anyway, yYou can give it a look.
Those look like class C and D and trip at 20mA. The brochure is cleverly worded. So those are actually LESS "people-safe." But thanks for posting the information anyway.
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