A single-phase self-powered, microprocessor-based time/ instantaneous overcurrent relay that provides cost-saving overload and fault protection for generators, transformers, feeders and motors. Available in multiple-rack, panel, and retrofit mounting options. See the Relay Upgrade Experts Chart in the Technical Resources tab below to determine if a Basler relay can replace your older style relay. Benefits : * Accurate, repeatable, and reliable operation. * No additional power source required since relays are self-powered from 50/ 60 Hz systems. Available in five- or one-amp CT secondary models. * Timings can be tailored to the application with multiple field-selectable curves. * Flexible pickup is continuously adjustable over a wide range. * Instantaneous protection can be set lower to provide more complete protection with a design that minimizes transient overreach. * Reduce arc flash hazards by applying a second independent instantaneous element available. * Models available to replicate decaying reset of electromechanical relay disks when current drops to zero. * Replace existing electromechanical relays with specifically-wired retrofit models. * Reduce CT costs with low sensing and supply burdens. * Reduce maintenance labor by eliminating recalibration with the self-calibration feature. * Testing is easy with drawout construction for all models and in-case testability for most models.