Blue Sea 8255 Digital Meter Shunt 500A/50mV [8255]DC Shunt For use with DC Ammeters For continuous operation, it is recommended that shunts not to be run at more than two thirds (66%) the rated current under normal conditions WARNING: This product can expose you to chemicals including di(2 ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.