The modular DEHNbloc MU series are UL 1449 4^th Ed. Type 1 Component Assembly and therefore ready for an easy installation into many electrical products. The very high discharge current capacity of 75 kA (10x350 µs) due to DEHN’s patented lightning arrester gap technology enables the SPD to resist powerful lightning strikes and therefore protect your electrical system and gear. The DEHNbloc three-pole has also remote contacts and a visual non-power consuming status indication for each plug-in protection module.