Heavy-duty 4+1 metal socket box designed to support four primary industrial sockets and one auxiliary component for reliable and efficient multi-point power distribution in industrial environments. [Built in Circuit Breakers] Featuring C16 and C32 circuit breakers (1P 230V 16A, 3P 400V 16A. Equipped or empty socket combinations and fuse box solutions for factories, construction sites, workshops and working environments. Compared to ordinary household plugs and sockets, they typically have higher power and current capacities, and their designs take into. Compliant with European/international standard EN/IEC 60309-2 The products have passed a variety of performance tests, whether in product temperature risemechanical life, material flame retardant, high pressure resistance, vibration, high temperatureresistance, low temperature, or dust, pollution.