GMA type fuses are simply the glass fuses you see used in electronics,and at earlier times they were used in automobiles. They are glass ,which makes it easy to see if they are blown or not.

Glass and ceramic tube fuses are often used to protect appliances and consumer electronics. As electronic equipment becomes smaller, the circuits and components become more delicate and easily damaged. Fuses are the preferred method of protection due to their accuracy, small size and reliability.

Bussmann Fuses products are manufactured by Eaton Corporation. Bussmann is headquartered outside of St. Louis, MO and manufactures and markets circuit protection products globally and is by far the market leader in terms of products and innovation.

Bussmann fuses protect electrical circuits from overheating by interrupting electrical surging during electrical overloads. The fuse cuts off the path once the electrical current reaches a dangerous temperature.