GFCI for lower than 120V

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You probably cannot answer, but I am curious about whether they are going this route to deliver a safe and attractive product to the consumer, with a lot of design and marketing tradeoffs open to them or are looking ahead to eventually meeting some CPSC or UL standards (which may not exist yet for the product)?.
 
Jraef said:
But... the term "GFCI" has a very narrowly specific definition here in North America, as a device intended to protect personnel from shock hazards at levels not above 6mA of current and listed as "Class A" under UL 943 (or any other acceptable NRTL test standard, if there were one, but there is not). So "custom" solutions will not technically be a "GFCI" in the strict sense of the term, they would be, at best, custom shock hazard protection devices that would have no official recognition.
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It would seem to me that the "GFCI sensing module" based systems should qualify as a GFCI. Such a system would operate at 120V, and would require both the sensor and a suitably rated shunt trip breaker or contactor.

The North Shore Safety specs specifically say 'Type: UL 943 Class A or UL 1053', and specify a trip level of 5+-1mA. (The option is because they sell both GFCI and ELCI devices)

In my mind the supplier has provided a properly rated GFCI system where the sensing function is separated from the power and control function, allowing a 'semicustom' solution, a 120V powered GFCI providing protection and control for a different voltage circuit..

As long as there is a 120V supply somewhere, and output of charlie b's clients device can by interrupted by interrupting this 120V supply, then it seems to me that this is a way to buy a GFCI for the '0 to 70V' system. A 120V shunt trip breaker requires 120V power for the trip function, but the circuit being interrupted simply needs to be below the interruption rating of the breaker.

-Jon
 
GoldDigger said:
You probably cannot answer, but I am curious about whether they are going this route to deliver a safe and attractive product to the consumer, with a lot of design and marketing tradeoffs open to them or are looking ahead to eventually meeting some CPSC or UL standards (which may not exist yet for the product)?.
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I can say that it is none of those things. My understanding is that the component under discussion will be located in my client's office, and is not something they plan to sell to others.

 
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