频敏变阻器是一种静止的无触点电磁元件，利用它对频率的敏感而自动变阻。频敏变阻器实质上是一个铁损很大的三相电抗器，其结构类似于没有二次绕组的三相变压器。　　频敏变阻器是一种有独特结构的新型无触点元件。其外部结构与三相电抗器想似，即有三个铁芯柱和三个绕组组成，三个绕组接成星形，并通过滑环和电刷与绕线式电动机三相转子绕组相接。　频敏变阻器BP1-204,BP1-205,BP1-206,BP1-208,BP1-210,BP1-212,BP1-305,BP1-306,BP1-308,BP1-310,BP1-312,BP1-316,BP1-406,BP1-408,BP1-410,BP1-412,BP1-416/,BP1-504,BP1-506,BP1-510,BP1-512,BP1-204/16003,BP1-204/12504,BP1-204/10005,BP1-204/8006,BP1-205/10005,BP1-205/8006,BP1-205/6308,BP1-205/5010,BP1-205/4012,BP1-205/12504,BP1-206/10005,BP1-206/8006,BP1-206/6308,BP1-206/5010,BP1-206/4012,BP1-206/3216,BP1-208/10005,BP1-208/8006,BP1-208/6308,BP1-208/5010,BP1-208/4012,BP1-208/3216,BP1-208/2520,BP1-210/8006,BP1-210/6308,BP1-210/5010,BP1-210/4012,BP1-210/3216,BP1-210/2520,BP1-212/4012,BP1-212/3216,BP1-212/2520,BP1-212/2025,BP1-212/1632,BP1-305/5016,BP1-305/4020,BP1-305/3225,BP1-305/2532,BP1-305/2040,BP1-305/6312,BP1-306/5016,BP1-306/4020,BP1-306/3225,BP1-306/2532,BP1-306/2040,BP1-306/1650,BP1-306/6312,BP1-306/5016,BP1-306/4020,BP1-306/3225,BP1-306/2532,BP1-308/4020,BP1-308/3225,BP1-308//2532,BP1-308/2040,BP1-308/1650,BP1-308/6312,BP1-308/5016,BP1-310/4020,BP1-310/3225,BP1-310/2532,BP1-310/2040,BP1-310/1650,BP1-310/5016,BP1-310/6312,BP1-312/4020,BP1-312/3225,BP1-312/2532,BP1-312/2040,BP1-312/1650,BP1-312/5016,BP1-312/6312,BP1-316/4020,BP1-316/3225,BP1-316/2532,BP1-316/2040,BP1-316/1650,BP1-316/5016,BP1-316/6312,BP1-316/1650,BP1-003/11203,BP1-005/10004,BP1-005/10003,BP1-005/8003,BP1-008//10004,BP1-008/8004,BP1-008/8006,BP1-008/8003,BP1-506/8006,BP1-506/5010,BP1-506/6308,BP1-506/10005,BP1-508/5010,BP1-508/6308,BP1-508/8006,BP1-512/3216,BP1-512/4010,BP1-512/4012,BP1-512/6310,BP1-512/4016,BP1-512/5010,BP1-406/6316,BP1-406/3225,BP1-406/6308,BP1-406/5010,BP1-406/6312,BP1-406/3232,BP1-406/8006,BP1-406/5016,BP1-406/2532,BP1-406/8010,BP1-410/3225,BP1-410/5016,BP1-410/4016,BP1-410/2525,BP1-410/3216,BP1-410/2532,BP1-410/5012,BP1-410/4020,BP1-410/2040,BP1-412/2532,BP1-412/5016,BP1-412/3216,BP1-412/4012,BP1-412/3232,BP1-412/2032,BP1-412/4016,BP1-412/4020,BP1-412/3225,BP1-408/5016,BP1-408/4016,BP1-408/5010,BP1-408/4012,BP1-408/3216,BP1-408/5012,BP1-408/8010,BP1-408/8006,BP1-408/4020,BP1-408/6308,BP1-408/3232,BP1-012/8004,BP1-012/6306,BP1-012/6304,BP1-012/6305,BP1-510/5008,BP1-510/4010,BP1-510/6304,BP1-510/5006,BP1-510/6306,BP1-510/8004,BP1-510/6308,BP1-510/5010,BP1-510/8006,BP1-004/10003,BP1-006/10003,BP1-006/8004,BP1-010/8004,BP1-010/6305,BP1-504/12504,BP1-504/10005,BP1-416/2040,BP1-416/3225,BP1-416/1650,BP1-316,BP1-406,BP1-408,BP1-410,BP1-412,BP1-416/,BP1-504,BP1-506,BP1-510,BP1-512,BP1-204/16003,BP1-204/12504,BP1-204/10005,BP1-204/8006,BP1-205/10005,BP1-205/8006,BP1-205/6308,BP1-205/5010,BP1-205/4012,BP1-205/12504,BP1-206/10005,BP1-206/8006,BP1-206/6308,BP1-206/5010,BP1-206/4012,BP1-206/3216,BP1-208/10005,BP1-208/8006,BP1-208/6308,BP1-208/5010,BP1-208/4012,BP1-208/3216,BP1-208/2520,BP1-210/8006,BP1-210/6308,BP1-210/5010,BP1-210/4012,BP1-210/3216,BP1-210/2520,BP1-212/4012,BP1-212/3216,BP1-212/2520,BP1-212/2025,BP1-212/1632,BP1-305/5016,BP1-305/4020,BP1-305/3225,BP1-305/2532,BP1-305/2040,BP1-305/6312,BP1-306/5016,BP1-306/4020,BP1-306/3225,BP1-306/2532,BP1-306/2040,BP1-306/1650,BP1-306/6312,BP1-306/5016,BP1-306/4020,BP1-306/3225,BP1-306/2532,BP1-308/4020,BP1-308/3225,BP1-308//2532,BP1-308/2040,BP1-308/1650,BP1-308/6312,BP1-308/5016,BP1-310/4020,BP1-310/3225,BP1-310/2532,BP1-310/2040,BP1-310/1650,BP1-310/5016,BP1-310/6312,BP1-312/4020,BP1-312/3225,BP1-312/2532,BP1-312/2040,BP1-312/1650,BP1-312/5016,BP1-312/6312,BP1-316/4020,BP1-316/3225,BP1-316/2532,BP1-316/2040,BP1-316/1650,BP1-316/5016,BP1-316/6312,BP1-316/1650,BP1-003/11203,BP1-005/10004,BP1-005/10003,BP1-005/8003,BP1-008//10004,BP1-008/8004,BP1-008/8006,BP1-008/8003,BP1-506/8006,BP1-506/5010,BP1-506/6308,BP1-506/10005,BP1-508/5010,BP1-508/6308,BP1-508/8006,BP1-512/3216,BP1-512/4010,BP1-512/4012,BP1-512/6310,BP1-512/4016,BP1-512/5010,BP1-406/6316,BP1-406/3225,BP1-406/6308,BP1-406/5010,BP1-406/6312,BP1-406/3232,BP1-406/8006,BP1-406/5016,BP1-406/2532,BP1-406/8010,BP1-410/3225,BP1-410/5016,BP1-410/4016,BP1-410/2525,BP1-410/3216,BP1-410/2532,BP1-410/5012,BP1-410/4020,BP1-410/2040,BP1-412/2532,BP1-412/5016,BP1-412/3216,BP1-412/4012,BP1-412/3232,BP1-412/2032,BP1-412/4016,BP1-412/4020,BP1-412/3225,BP1-408/5016,BP1-408/4016,BP1-408/5010,BP1-408/4012,BP1-408/3216,BP1-408/5012,BP1-408/8010,BP1-408/8006,BP1-408/4020,BP1-408/6308,BP1-408/3232,BP1-012/8004,BP1-012/6306,BP1-012/6304,BP1-012/6305,BP1-510/5008,BP1-510/4010,BP1-510/6304,BP1-510/5006,BP1-510/6306,BP1-510/8004,BP1-510/6308,BP1-510/5010,BP1-510/8006,BP1-004/10003,BP1-006/10003,BP1-006/8004,BP1-010/8004,BP1-010/6305,BP1-504/12504,BP1-504/10005,BP1-416/2040,BP1-416/3225,BP1-416/1650