Parameters: Model Number: ABB E1N1250 R400/800/1250 3/4P Rated Voltage: AC 690 V (three-phase system) Rated Current: 400A, 800A, and 1250A (adjustable depending on configuration) Rated Frequency: 50/60 Hz Number of Poles: 3P (three-pole) or 4P (four-pole) Protection Type: Long-Time Protection (L): Adjustable from 0.7 to 1.0 times rated current, offering overload protection and preventing damage due to prolonged overcurrent conditions. Short-Time Protection (S): Adjustable from 3 to 10 times rated current, with time delay, providing protection against short-circuit faults while allowing for motor startup. Instantaneous Protection (I): Offers instantaneous disconnection in case of severe short-circuit conditions, ensuring protection from high fault currents. Ground Fault Protection (G): Ground fault protection (LSI) detects leakage currents and isolates the faulty section, providing safety from electrical hazards. Thermal Overload Protection: Monitors the temperature of the system and prevents overheating caused by sustained overload conditions. Breaking Capacity (Icu): 70 kA at 400V, ensuring safe interruption of high fault currents without damaging the system. Mounting Type: DIN rail mountable or panel mountable for easy integration into motor control centers (MCCs), distribution panels, and electrical control systems. Protection Class: IP20 (for indoor use; additional kits available for more demanding environments). Weight: Approx. 15–25 kg, depending on the rated current configuration. Dimensions (H x W x D): Approx. 350 x 250 x 180 mm (varies with rated current configuration). Control Voltage: 24 V DC (or 48 V DC depending on configuration) for remote control and communication features. Communication Protocols: Supports Modbus RTU, Profibus, and Ethernet for remote monitoring, diagnostics, and integration into PLC or SCADA systems. Auxiliary Contacts (Optional): Available for signaling faults and system status updates, useful for integration into control and automation systems.