For use with DC ammetersFor continuous operation, it is recommended that shunts not to be run at more than 2/3 (66%) the rated current under normal conditionsCurrent Rating: 100 AmpsRatio: 100 Amps DC/50 mV DCContinuous Duty: 66% of Rated CurrentFull Scale: 50 mVIntermittent Duty: 300% at 3 sec, 100% at 5 minShunt Type: Resistive, Manganin Metal ElementWeight: 0.2lb.