Typical applications: industrial controls, marine panels, trucks, buses and automotive.
Materials: brass terminals, frame and support are steel with zinc chromate, case is black phenolic plasic (flammability rating: UL 94 flame class 94V-1) and all other external parts are brass/bright nickel.
Recommended mounting hole: 1/2" diameter.
Single Pole Rated: 10A/277V AC; 20A/125V AC; 21A/14V DC; 3/4 HP 125-250V AC.
Double Pole Rated: 10A/277V AC; 20A/125V AC; 21A/14V DC; 1-1/2 HP 125-250V AC
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典型应用：工业控制，海洋应用，卡车，公共汽车和汽车。
材料：黄铜端子，框架和外部结构用钢铁锌铬酸盐制造，内部材料为黑色酚醛塑料（易燃性等级：UL 94阻燃级94V - 1 ），其他所有的外部零件为黄铜/光亮镍。
建议安装孔： 1/2"直径。
单级额定值：交流 10A/277V; 交流 20A/125V; 直流 21A/14V; 马力 3/4，交流 125-250V
双级额定值：交流 10A/277V; 交流 20A/125V; 直流 21A/14V; 马力 1-1/2，交流 125-250V
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