Brand: AutomationDirect Item: Mechanical interlock For Use With: GH15BN, GH15CN, GH15DN, GH15ET, GH15FT GH15GT, GH15HT, GH15JT, GH15KT, GH15LT or GH15MT series contactors Application: Mechanically connects contactors to prevents both from being pulled in at the same time AutomationDirect mechanical interlock, for use with GH15BN, GH15CN, GH15DN, GH15ET, GH15FT GH15GT, GH15HT, GH15JT, GH15KT, GH15LT or GH15MT series contactors, mechanically connects contactors to prevents both from being pulled in at the same time.