If you have questions about our products, Fill out the form below and we will answer any questions you have. Tips: Fields marked with*are required. ABB REB670 1MRK002820-AC Busbar Protection Relay Introduction The ABB REB670 (1MRK002820-AC) Busbar Protection Relay is a high-speed intelligent electronic device (IED) designed for selective and ultra-fast protection of electrical busbar systems in medium, high, and extra-high voltage su *Your Name: *Your Email: *Your Name: *Vdcode: Submit