Mersen plug fuses are intended for industrial and
residential applications. Non time-delay fuses are available for receptacle and
lighting circuits and time-delay fuses for motor loads. For Canadian
requirements, a type "P" fuse is used for non-motor loads and Type "D" for
electrical heating and cyclical load circuits. Both fuses have low melting-point
temperature elements. Type "S" plug fuses are time-delay and tamper resistant.