... baked on, form a durable, light gray exterior. The current carrying parts are of copper alloy. The round connector is designed ... low amperage requirementsSpecification Item Code No. Description Fix hub sizeSM-100-B1 Phase,100A,120/240Vac,4 jaw 1/2"SM ... -100-C1 Phase,100A,120/240Vac,4 jaw 3/4"SM-100-D1 Phase,100A,120/ ... 240Vac,4 jaw 1"SM-100-E1 Phase,100A,120/240Vac,4 jaw 1-1/4" ...