The Square D by Schneider Electric brand Heavy Duty Safety Switch is designed to be tough, reliable and provide exceptional performance in the most grueling conditions. F Series safety switches provide significantly higher levels of mechanical endurance than NEMA KS-1 or UL98 standards require. All heavy duty safety switches feature a quick-make, quick-break operating mechanism, a dual cover interlock and a color-coded indicator handle. This Square D heavy duty safety switch grounding bar comes in 30A & 60A. This Solid Insulated Groundable Neutral Assembly has a current rating of 400A/600A and has a terminal service ground. This neutral is for series E 4 and 5 safety switches. This safety switch solid neutral assembly are for heavy duty safety switch with a UL listed & CSA certification.