American Electrical DIN Rail mounted Circuit Breakers are Internationally and Domestically approved and are used all over the world to protect machinery, equipment and people. They operate via a Hydraulic-Magnetic patented system. The internal connection system accepts wires from 18-6 AWG and consists of a rising clamp/screw system with all components being RoHS compliant. The trip curve data is available on the American Electrical website at www.americanelectrical.com