ABB’s range of bay control IEDs (Intelligent Electronic Devices) provide versatile control and backup protection for circuit-breakers, disconnectors and earthing switches in any kind. All models feature comprehensive HMI (Human-Machine Interface) capabilities, for local management, and are delivered to site pre-configured for the customer application to ensure trouble-free installation. Compact design and extensive control capabilities further simplify installation, as each model is able to take on multiple roles across switchgear.