Features 1??[Fastening Ring]?Knife switch has added a new fastening ring design to strengthen the toughness of the tool holder, and it is still in good contact with the blade after several times of opening and closing. 2??[Transparent Case and Large Wiring Hole] 4 pole disconnect knife switch has a highly transparent case showing pure copper inside. Large diameter tunnel type wiring hole, convenient wiring, stable pressure line. 3??[Good Applicability] Disconnect knife switch is applicable for industrial businesses and home appliances, converting between power systems and self generating circuits. 4??[Anti Electrical Shock] Electric breaker wiring is designed to prevent electric shock, and wiring port edge is raised to prevent fingers from touching conductive screws and eliminate the danger of electric shock. 5??[With LED Indicators] There are LED indicators on both sides of the handle, and the working status is clear at a glance. For fail safe circuit breaker, standby generator switch, power switch. Specifications Item Type: 4 Pole Knife Switch Material: Resin+ABS+Copper Number of Poles: 4P Rated Current: 160A Maximum Rated Working Voltage: AC380V Scope of Application: Fail Safe Circuit Breaker, Standby Generator Switch, Power Switch Weight: Approx. 2058g / 72.6oz Package List 1 x 4 Pole Knife Switch 4 x Screw