The application is for heat tracing a pipe. NEC 427.22 calls for a ground-fault equipment protection circuit interrupter.

I've seached google for GFCI/ELCI and found a unit for over $200. I'd like to compare a few manufacturers before spending that much.

Thanks for your help.

Here is a Cutler Hammer: http://www.allbreakers.com/Cutler-Hammer-or-Westinghouse-GFEP130-spc-jqnrmoinrmk0.html

Tim