Power supplies are UL/cUL certified

WAGO 787 Series EPSITRON-PRO-Power Supplies are UL and cUL Certified and process power peaks in systems with high-output requirements. The 1- and 3-phase primary switch mode PRO units provide 93% efficiency, PowerBoost and TopBoost functions. Select models also provide free configuration and monitoring software and Line Monitor capability.

http://www.wago.us/products/27885.htm