Heavy-duty, corrosion-resistant screws, surface plates and optional hardware. Accessory hardware provides a variety of termination options;Available cover helps prevent contact with live terminals. Rugged thermoplastic base (UL rated 94V-O); Rated at -40F to 260F(-40C to 130C). 15A/250V (15A/125V when used with optionalquick-connects) UL listed; 15A/150V (15A/125V when used with optional quick-connects) CSA certified. 0.375 inch (9.52mm) center spacing; Accepts wire sizes from 22 through 14 AWG Cu; #6-32 philslot, zinc-plated steel terminal screws.