Type 1 surge arrester Surge-Trap® STMT1 Series

class Itelecommunicationsfor electrical installations

STM T1 50 is the most robust series of single pole Type 1/Class I lightning current arresters, able to discharge energy (current) from a direct lightning strike (10/350µs) on an external lightning protection system (LPS) or overhead supplies, in accordance with EN/IEC 61643. Suitable as the first step of protection in incoming power supply panels and areas with high exposure to lightning strikes, fitted with an external lightning protection system. Leakage current free (LCF) Multi-discharge technology Single pole devices for TNS, TNC, IT and TT earthing systems Un(L-N/L-L): 120/208V, 230/400V, 277/480V, 400/690V DIN-rail mountable, monobloc format Back-up fuse: 500 A gG