Type-1 surge arrester. 1-phase. Polycarbonate NEMA-3R enclosure with UV inhibitors. 150 V maximum continuous operating voltage (MCOV). 20 kA nominal discharge rating. 50 kA maximum surge current, per mode. TPMOV surge technology. Protection status LEDs and audible alarm. -20 to 50°C operating temperature. Type-1 surge arresters offer power users a way to reliably and economically help protect against lightning strikes entering into electrical equipment such as farming irrigation systems and pumps used in oil or petrochemical applications. They can also be used to protect against external transient surges entering through a home's service entrance. These devices offer a quick, cost effective turnkey solution to the problem of transient voltage surges causing malfunctions in pumps and motor appliance systems.