Intermatic H20S23D1DG2 Surge Protective Device, 7 Mode, 120 240 VAC 3Phase High Leg Delta, Type 2 Relay By adding a simple to install HC By adding a simple to install HC Flow Meter and a wide selection of high performance nozzles are available Red LED Service Indicator Maximum Continuous Operating Voltage (L G) 150 Maximum Continuous Operating Voltage (L L) 300 Maximum Continuous Operating Voltage (L N) 150 Maximum Continuous Operating Voltage (N G) 150 Maximum Continuous Operating Voltage HG 300 Maximum Continuous Operating Voltage HL 300 Maximum Continuous Operating Voltage HN 300 Maximum Surge Current Rating Per Mode 100 kA Nominal Discharge Current 20 kA RoHS Certification Yes Short Circuit Current Rating 200 kA Surge Protection LED Indicator Yes Voltage Protection Rating (L G) 700 Voltage Protection Rating (L L) 1200 Voltage Protection Rating (L N) 800 Voltage Protection Rating (N G) 700 Voltage Protection Rating HG 1200 Voltage Protection Rating HL 2000 Voltage Protection Rating HN 1200 Wire Size Max #10 AWG Operating Temperature Max (°C) 80 Operating Temperature Max (°F) 176 Operating Temperature Min (°C) 40 Operating Temperature Min (°F) 40 Product Depth (in) 3 35 Unit Carton Height (in) 4