Three Phase Voltage and Current Relay Protector Moulded case, voltage relay, non smart device Available ratings: 100A, 63A, 60A Nominal voltage: three phase 3x230V (220V class) This unit shown as size 63A with neutral included Key benefits Automatic source transfer: detects main power loss and switches to backup power, then returns to main supply when it is restored, enabling continuous operation for critical loads. Adjustable protection: over voltage, under voltage and current limiting settings help protect connected equipment from harmful supply conditions. Robust electrical performance: conductivity internal components reduce contact resistance and improve long term reliability under load. Safe, durable construction: moulded case with flame retardant and temperature resistant materials for reliable insulation and extended service life. Easy installation: designed for mounting in standard distribution boxes and panels for fast integration into existing systems. Function and compatibility Three pole design for three phase systems, suitable for 3x230V supply environments. Available current capacity options 100A, 63A and 60A to match different load requirements; the 63A variant includes a neutral connection. Acts as both a voltage relay and current protector, combining over and under voltage monitoring with current limiting to prevent damage from abnormal supply conditions. Not a smart device so it operates independently of external control networks. Performance and materials Moulded case provides mechanical protection and reliable electrical insulation. Internal contacts and conductors optimized for conductivity and long life under repeated switching. Components selected for flame retardance and resistance to elevated temperatures in enclosure environments. Typical applications Urban and street lighting control where automatic transfer and voltage protection preserve continuous operation. Commercial buildings and shopping malls for backup supply switching and protection of lighting and HVAC circuits. Transport hubs such as airports for reliable power transfer and protection of critical systems. Why choose this relay Provides automatic and adjustable protection in a compact, easy to install package. Suited to three phase 230V installations with multiple current rating options to fit panel and load requirements. Durable construction and clear functional design make it practical for commercial and infrastructure applications.