Description Paired with our AEC 12-Volt DC power supply, the AEC Magnetics CEA-250-12C is a reliable, sturdy additiion to your automated manufacturing operation. This magnet has a diameter of 2.5 inches, a height of 2.0 inches and a 1/4-20 mounting thread. It draws 8 watts of power, weighs 2.0 pounds and offers 320 pounds of holding power. No maintenance, noise or air pressure requirements that vacuum cups or grippers demand if you select an AEC electromagnet.