Device 타입 = Surge Arrestor Maximum Surge Current = 40kA Electrical Phase = 1 Mounting Style = DIN Rail Impulse Discharge Current = 20kA The Siemens Surge arrester 타입 2 Requirement class C has UC 350V Pluggable protective modules 4-pole. It has 3+1 circuit for TN-S and TT systems with remote display.IP20 protection class IP -40°C to 80°C ambient temperature PDT contact switching function