The Basler Electric ES-47N 3AB1N0N0 Phase Balance Relay is a single-phase protection relay designed for interior use. It is smart home compatible and operates on AC current at 120V. With a compact height of 3 inches, this unit from Basler Electric is ideal for electrical equipment and supplies in a variety of industrial and commercial settings. Its universal compatibility and reliable performance make it a versatile choice for protecting electrical systems.