Schneider Electric's Square D heavy duty safety switch is designed to be tough, reliable and provide exceptional performance in the most grueling conditions. All heavy duty safety switches feature a quick-make, quick-break operating mechanism, a dual cover interlock, and a color coded indicator handle. They also come with many field installable or factory installed accessories. This solid neutral assembly is insulated and groundable. It has one terminal in and one terminal out, with an additional grounding terminal. Each terminal accepts 14 AWG to 1/0 AWG for copper and 12 AWG to 10 AWG for aluminum conductor. This accessory complies with UL and CSA standards