主要作为冶金、化工、矿山、建筑、港口码头等场合机机械制造专业的各类起重机械设备中作为起重机起动,调速及电力制动电阻器。RT51-112M-61RT51-132M1-61 RT51-132M2-61RT51-160M1-61 RT51-160M2-61RT51-160L-61 RT51-180L-62RT51-200L-62 RT51-225M-63RT51-160L-81 RT51-180L-82RT51-200L-82 RT51-225M-82RT51-250M1-82 RT52-112M-61RT52-132M1-61 RT52-132M2-61RT52-160M1-61 RT52-160M2-61RT52-160L-63 RT52-180L-62RT52-200L-63 RT52-225M-63RT52-160L-81 RT52-180L-82RT52-200L-82 RT52-225M-82RT52-250M1-83RT54-112M-61RT54-132M1-61