With the unique design for magnetic circuit, the coil is made from aluminum and the protecting board for coil is made from the manganese board with high performance, It features with light self-weight and strong lifting capacity Simple structure and reliable operation make it suitable for various lifting equipment Besides the rated voltage ,it can adopt the method of strong excitation that can improve not only the lifting capacity but also the economic profit. It is suitable for transporting the cast iron ingot, steel ball and all kinds of scrap. Specification appearance size (for room temperature ,rated voltage Dc-220,on-lood factor td-60%)