Power Line SPD - DIN-RAIL IEC TYPE 2/UL CSA

STP T2 40 is the series of Type 2/Class II surge protective devices for discharging voltage surges, in accordance with EN/IEC 61643-11 and certified UL 1449 4th Ed.

Suitable for the second stage of protection in supply distribution panels in which Type 1 protection devices are installed upstream, or for the first stage of protection in commercial or other applications not exposed to direct strikes and with no external lightning protection system.

More information on Electrical Power website.