Automatic Transfer Switch EK2R Voltage Relay, 4P, 40A, Rated 220/380V Key benefits Automatic, reliable changeover between power sources to minimize downtime and ensure continuous operation. Builtin voltage relay monitoring for precise detection of mains and backup source conditions. Compact 4 pole design with a 40 amp current rating for straightforward integration into distribution panels. configuration to match specific installation needs and wiring arrangements. Features and important attributes Model: EK2R Type: Voltage relay for automatic transfer switching Rated voltage: 220/380V, compatible with common single phase and three phase systems Poles: 4P for neutral plus threephase conductors Current rating: 40A : Available to accommodate projectspecific requirements Performance: Designed for stable operation at the rated voltage and current, with reliable changeover under normal load conditions Installation: Panelmountable form factor suitable for electrical distribution and control cabinets How it solves problems Eliminates manual switching and reduces response time when the primary power source fails. Ensures clean, controlled transfer to backup power, helping maintain continuity for critical loads. Simplifies wiring and integration for systems operating at 220/380V with a single compact device. Typical applications Backup generator integration for residential, commercial, or light industrial buildings to enable automatic transfer when utility power is lost. Power management for threephase equipment such as pumps, compressors, and HVAC systems where uninterrupted supply is important. Remote sites, small data rooms, and telecom installations that require automated source switching and reliable voltage monitoring. What to expect at installation Verify system voltage and load current to confirm compatibility with 220/380V and 40A rating. Mount within an accessible distribution or control panel and connect the four poles according to phase and neutral wiring standards. Configure customized options as required for control logic, timing, or auxiliary signaling. Model EK2R provides a practical, adaptable solution for automatic transfer switching in 220/380V electrical systems, combining voltage relay monitoring with a 4P 40A design for reliable source changeover.