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 REJ603 REJ603BBB10NN3XC Self Powered Feeder Protection Relay Introduction The ABB REJ603 REJ603BBB10NN3XC Self Powered Feeder Protection Relay is a compact and highly reliable protection solution designed for secondary distribution networks where auxiliary power may not be available. As part of ABB’ *Your Name: *Your Email: *Your Name: *Vdcode: Submit