Description We've been building magnetic solutions for almost 65 years. Here's a great one: AEC Magnetics 12 Volt Circular electromagnets. These are durable, safe and work as promised, guaranteed. The CSA-250-12C is 2.50 inches in diameter, 1.25 inches in height, with a mounting thread configuration of 1/4-20. It draws 10 watts, weighs 2.0 pounds and offers 250 pounds of holding power. Put a sturdy AEC 12 Volt Circular electromagnet to work in your operation for hassle-free parts handling. Be sure to choose an AEC 12-volt DC power supply from our DC Power and Supplies section on this website.