产品分类：Transformer Accessories,规格：For Use With 171 Series Variable Transformer, 201 Series Variable Transformer, 201-40 Series Variable Transformer, 221 Series Variable Transformer, 221-B Series Variable Transformer, 251 Series Variable Transformer, 252 Series Variable Transformer, 291 Series Variable Transformer, 511 Series Variable Transformer, 3PN221B Series Variable Transformer, 3PN501B Series Variable Transformer, 501-B Series,
