XY142R-381 XY142R-508 XY142R-762 Material Terminal screw : Brass. Tin plated. 0.5t Spring : Stainless strip steel ( SUS301 )0.4t Insulationg body : Polyamide66(UL94V-0) lever, cover : Polyamide66(UL94V-0) Electrical Voltage rating : 300VAC Current rating : 10Amps/way max. Insulation resistance : 5000MΩ/500V Wire range : 14-24AWG Operation temperature : -40℃ to+105℃