The Weidmuller Type III surge protection compact type III arrester for AC/DC protection acc. to IEC 61643-11:2012 suitable for protecting terminals installed in the vicinity of the equipment to be protected can be used as single-port arrester when nominal current is greater than 16 A. Arrestor serves as surge protection and is used in application in accordance with IEC 61643-12
If there is no longer any protection, the colour of the LEDs changes from green to red