with overvoltage protection
with label field 12 x 55 mm
with screw terminals for rigid and flexible conductors up to 2.5 mm2
connecting terminals in accordance with DIN VDE 0620
without 'fastening claw': Item no. with 'N', e.g. ..521 N..
Intended use
Fine protection type 3 for electrical and electronic devices against transient overvoltages in accordance with EN 61643-11
Use only in combination with coarse protection type 1 and medium protection type 2
Use in TN, TT and IT networks
Fixed installation indoors
Installation in device box in accordance with EN 60670-1
Product features
The device protects electrical and electronic devices against transient overvoltages.
The failure of the protective function is signaled by an acoustic and optical signal.