FEATURES & BENEFITS:- High horsepower rating of 20HP. - Compact design. - Gull-wing shaped brass terminal pressure clamps. - Constructed of glass-reinforced thermoplastic. - Two-point contact arms.- One-piece contact carrier. - UL508 and cULus Listing of individual device and assembled device within enclosure. - Heavy-duty zinc-plated steel strap. - Two brass rivets secure strap to housing.- External screw-pressure-plate back and side wire terminal screws unstaked for use with ring terminals. - 2-1/2 inch knockouts on back and 2-1/2 inch -3/4 inch knockouts on top and bottom