... D.C. up to 440V. 1. APPLICATION.The limit switch BK 200, BK 300 are designed for operation in distribution system of ... or oil. 2. SPECIFICATIONS Main technical characteristics of switches BK 200 (300) are shown in Table 1. Table 1voltage rating, ... Hz alternating current660Ampere rating, A16Actuation force of switch, H, no more than80Release force of switch, N, no more than2Travel of drive, ...