Feature: 1. With Visible Window: The surge protective device has a visual window with red and green indicator lights, easy to see power on and off. 2. Modular Design: The protector is modular design, 3P DIN rail installation method, with simple operation and maintenance. 3. Durable Shell: The shell is made of excellent PC material, with good flame retardant performance and safer operation. 4. Simple Wiring: Adopt cracking proof buckle design, easy and convenient wiring, with good stability and reliability. 5. Arrester Protection: The voltage protection level is 2.0kV, which is very suitable for home or outdoor arrester protection. Specification: Item Type: Surge Protective Device Product Material: PC Product Model: RMU1-C20 Maximum Voltage: AC 420V Voltage Protection Level: 1.5kV Level: 3P Mounting Method: Din rail mounting Maximum Discharge Current 20kA 40kA 60kA Nominal Discharge Current 10kA 20kA 30kA . Package List: 2 x Surge Protector Note: For electrical maintenance and installation, be sure to ensure that the operator has electrical work qualifications, and take necessary protective measures such as power off and insulation.