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E3S1250 R1250 PR122/P-LSI WMP 3P

The ABB E3S1250 R1250 PR122/P-LSI WMP 3P is a motor protection circuit breaker (MPCB) designed for high-power motor protection and electrical systems in industrial and commercial applications. This model is part of the E3S series and features adjustable protection settings for protecting motors, transformers, and other critical equipment from various electrical faults, including overload, short-circuit, ground faults, and thermal damage. The 3P designation indicates that this model is designed for three-phase systems, which are commonly used in industrial power systems.

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Parameters: Model Number: ABB E3S1250 R1250 PR122/P-LSI WMP 3P Rated Voltage: 400 V AC (Three-phase) Rated Current: 1250 A (adjustable) Frequency: 50/60 Hz Protection Type: Long-Time Protection (L): Adjustable from 0.7 to 1.0 times rated current for overload protection, preventing sustained overcurrents that could damage equipment. Short-Time Protection (S): Adjustable from 3 to 10 times rated current, with time delay, for short-circuit protection to handle fault conditions without unnecessary tripping. Instantaneous Protection (I): Provides instantaneous disconnection during severe short-circuit conditions to protect sensitive equipment. Ground Fault Protection (G): Ground fault protection (LSI) detects leakage currents or faults in the system and isolates the faulty section, improving safety. Thermal Overload Protection: Continuously monitors motor temperature to prevent overheating and ensure safe operation under various conditions. Wide Motor Protection (WMP): Provides enhanced protection against inrush currents and load fluctuations, optimizing the motor's protection under varying operational conditions. Breaking Capacity (Icu): 50 kA at 400 V, ensuring that the breaker can safely interrupt high fault currents and clear faults quickly without damage to the system. Mounting Type: DIN rail or panel mount, making it easy to integrate into motor control centers (MCCs), distribution boards, and electrical panels. Degree of Protection: IP20 (suitable for indoor environments; optional external protection kits for harsher conditions). Weight: Approx. 20–25 kg (depending on configuration). Dimensions (H x W x D): Approx. 500 x 300 x 200 mm (subject to configuration). Control Voltage: 24 V DC (external supply required for control and communication features). Modbus RTU Communication (Optional): Enables remote monitoring and diagnostics via PLC or SCADA systems, providing real-time system health tracking and fault detection. Auxiliary Contacts (Optional): Available for control systems, offering fault signaling and feedback to external systems.