The ABB LD GRB-01 is a compact, DIN rail mounted ground fault monitoring device designed to provide reliable ground protection for ungrounded AC and DC systems. The device is designed to detect leakage current through fault flow to ground and trip circuit breakers to protect equipment and personnel from electrical hazards.

ABB LD GRB-01 has the following key features and functions:

Load grouping, relay output, digital input and communication interface: The device can group loads and control different devices or systems as needed. It usually has multiple relay outputs for controlling various loads, such as motors, valves, lights, etc. In addition, it may be equipped with digital input channels to receive external signals or trigger conditions in order to perform corresponding control operations.
Communication interface: LD GRB-01 may have an interface to communicate with other devices or control systems, such as Modbus, Profibus, etc. This allows it to easily connect and communicate with other devices to achieve system integration and optimization.
High reliability: ABB is a well-known manufacturer of automation and electrical equipment, and its products are known for their high reliability and stability in the industry. LDGRB-01, as a member of its product line, naturally inherits these fine traditions. It is suitable for long-term operation in industrial environments and can ensure the continuous and stable operation of equipment.
Multiple mounting positions and wide ambient temperature range: The LDGRB-01 has multiple mounting position options (M1 to M6) and ADAPTS to a wide ambient temperature range (-20°C to +40°C) with an IP55 protection rating.
In terms of parameters, ABB LDGRB-01 has A rated voltage of 380 V, a rated frequency of 50 Hz, a rated current range of 1.5 to 350 A, an efficiency of up to 97%, and a noise level of less than 80 dB.