Mechanical Interlock Device Circuit Breaker Amp Rating 100 A Circuit Breaker Type Not Applicable Current Rating 100 A Fuse Protection Non-Fused Fuse Type Not Applicable Locking Handle Yes NEMA Enclosure Rating Not Rated Number of Poles 4 Number of Wires 5 Voltage Rating 120/208V AC Compatible Plug Manufacturer Part Number 5Z929 Grounding Grounded Horsepower Rating 20 hp Housing Material Thermoplastic Maximum Wire Size 1/0 AWG Phase Three Resistance Properties Watertight