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. Specification: Item Type: 4PoleKnifeSwitch Material: Resin+ABS+CopperNumber of Poles: 4PRated Current: 160AMaximum Rated Working Voltage: AC380VScope of Application: Fail Safe Circuit Breaker Standby Generator Switch Power SwitchWeight: Approx. 2058g / 72.6oz Package List: 1 x 4PoleKnifeSwitch4 x Screw