Russian standard, limit switch BK200/300,are designed for AC 60HZ, rated ... D.C. up to 440V. 1. APPLICATION.The limit switch BK 200, BK 300 are designed for operation in ... in the frequency of 50-60 Hz, and the DC voltage to 440 V, under the forcing of control ... Hz alternating current660Ampere rating, A16Actuation force of switch, H, no more than80Release force of switch, N, no more than2Travel of drive ...