Type T 125Vac Dual-Element, Time-Delay, Edison Base Plug Fuse. Heavy-Duty Type T fuses for critical circuit protection. Used for air conditioners, furnace blower motors, swimming pool pumps, deep freezers or any circuit where motors frequently turn on and off. Use for all commercial applications. The Type T plug fuse is an industrial strength product. It provides superior protection, yet will not open under repeated motor startups. Available in a wide amp range to permit exact sizing for motor protection. Plug fuses thread into fuse receptacles. Two types of threaded fuses are available: Edison Base (brass threads) and Rejection Base (porcelain threads). The two are not interchangeable. The heavy-duty fuses (T or S) are industrial strength products featuring the exclusive Cooper Bussmann dual-element construction. This spring loaded design provides superior short-circuit and overload protection. The T or S fuses have more time-delay than medium-duty fuses in order to better protect motors and critical residential circuits. Plug fuses are rated for a maximum of 125Vac.