ARCA IEC - High performance cabinetSuperior performance and security in most demanding environments. Easy to use. Quick to install. All this is driven by innovation and market-driven product development. ARCA- IEC is a non-corrosive and cost-effective alternative to installing sheet steel cabinets in harsh and demanding environments. In a nutshell, ARCA has all the features of steel but the benefits of high-grade thermoplastic.