Contact Us CAREERS OPEN POSITIONS No open positions at this time. WORKING AT RONK Make the most of your career with Ronk! We provide equal opportunities for everyone and empower our associates to use their expertise. We believe in creating innovative products that help our customers achieve their goals better. GET IN TOUCH RONK SOLID PERFORMANCE. Reliability and safety of electrical systems have never been more important. Ronk's American designed and assembled products are durable, efficient and last for decades. Request a Quote or browse our products... PRODUCTS All Products Switches Phase Converters Meter Socket Circuit Breaker Power Factor Correction BLOCKER® Stray Voltage Isolator Outdoor Equipment Enclosures RESOURCES Tech Specs Data Sheets White Papers Videos FAQ Phase Converter Use Guide and Forms Warranty and Registration CONTACT PO Box 160 106 E State Street Nokomis, IL 62075-0160 sales@ronkelectrical.com Sales: 1-800-221-7665 Service: 1-217-563-8333 © Copyright 2021 Ronk. All rights reserved. This site uses cookie to ensure you get the best experience on our website. Learn More Accept

American Built. Ronk Solid. Sales: 1-800-221-7665 Service: 1-217-563-8333 Contact Us PRODUCTS Home Products BLOCKER® Stray Voltage Isolator SVI-50 11V BLOCKER® STRAY VOLTAGE ISOLATOR SVI-50 11V Off-site stray, or neutral-to-earth (NE), voltage can result from primary neutral currents, off-site faults, or marginal groundings. Ronk BLOCKER is designed to reduce the off-site contributions to the stray voltage, allowing the utility to focus on the on-site sources. The device operates directly on the principle of magnetic saturation and does not depend on external controls or internal logic signals; therefore, it reacts instantaneously, providing immediate, continuous protection at all times. Request a Quote Tech Spec Download Installation Instructions Download Stray Voltage Investigation How-To Download Ronk BLOCKER® Auburn University Poultry Farm Study Download SPECIFICATIONS GET IN TOUCH RONK SOLID PERFORMANCE. Reliability and safety of electrical systems have never been more important. Ronk's American designed and assembled products are durable, efficient and last for decades. Request a Quote or browse our products... PRODUCTS All Products Switches Phase Converters Meter Socket Circuit Breaker Power Factor Correction BLOCKER® Stray Voltage Isolator Outdoor Equipment Enclosures RESOURCES Tech Specs Data Sheets White Papers Videos FAQ Phase Converter Use Guide and Forms Warranty and Registration CONTACT PO Box 160 106 E State Street Nokomis, IL 62075-0160 sales@ronkelectrical.com Sales: 1-800-221-7665 Service: 1-217-563-8333 © Copyright 2021 Ronk. All rights reserved. This site uses cookie to ensure you get the best experience on our website. Learn More Accept