Steel hlws ris lub thawv yog cov khoom siv tiv thaiv hluav taws xob uas nws lub luag haujlwm tseem ceeb yog los muab ib qho chaw kaw rau circuits (IP54 tiv thaiv ntsuas lossis siab dua) txhawm rau ua kom muaj kev nyab xeeb. Ua los ntawm cov hlau (1.2-2mm tuab), lawv muaj kev cuam tshuam-tiv taus, hluav taws kub-resistant (kub tsis kam tshaj 800 degree), thiab ya raws. Lawv tuaj yeem tswj hwm ntau lub voj voog (qhov siab tshaj plaws tam sim no muaj peev xwm 63A) thiab tsim nyog rau cov tsev, kev lag luam, thiab kev tsim hluav taws xob. Cov ntawv thov muaj xws li lub tsev hluav taws xob faib hluav taws xob (xws li teeb pom kev zoo), kev lag luam automation tswj kev tiv thaiv hluav taws xob (txo qis dua 30%), thiab kev tiv thaiv cov nodes tseem ceeb hauv cov phiaj xwm hluav taws xob / dej.