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 REF610 Feeder Protection Relay Product Insight & Functional Overview The ABB REF610 Feeder Protection Relay is a compact, microprocessor-based protection device designed to safeguard electrical distribution systems with precision and reliability. As part of ABB’s Relio *Your Name: *Your Email: *Your Name: *Vdcode: Submit