15303-4-0-3 is a type of switch manufactured by Eaton Corporation. It is a double-throw center-off, spring return switch. This switch is made from a combination of metal and plastic and features a surface mount design. It has 4 terminals, 2 for normally open contact, 1 for normally closed contact, 2 for common and 2 for center-off. It is a momentary contact switch meaning it activates when pressure is applied and will stay activated until pressure is removed. It can be used in various applications including home appliances, lighting, and industrial control.