The ABB CA4-01 auxiliary contact block features an operational voltage of 690V and impulse withstand voltage of 6KV, with a rated frequency of 50/60Hz for auxiliary circuits. It includes 1 auxiliary contact, front mounting design, and requires a tightening torque of 1.2NM. Dimensions are 39.5mm in length, 43mm in height, and 9.9mm in net width.