The ABB E1N1250 D LSI 3P is a three-phase molded case circuit breaker (MCCB) designed for overload, short-circuit, and earth fault protection in electrical systems. The 1250 refers to the rated current of the breaker, which is 1250A. The LSI protection function is a key feature that offers Long-time, Short-time, and Instantaneous protection settings for a comprehensive approach to circuit safety.

Key Parameters Category Parameter Description / Typical Values Pressure Ratings Maximum Inlet Pressure (P1) Up to 400 psig (28 bar) for P100A/P102A; up to 1440 psig (99 bar) for P100C and high-pressure variants. Outlet Pressure (P2) Range Highly configurable via pilot selection. Ranges from a few psig up to 400+ psig. Capacity Flow Coefficient (Cv) Very high Cv values. For example, a 6" regulator can have a Cv well over 1000. Accuracy & Droop Excellent, typically within ±1-2% of the set point. Size & Connections Pipe Size 2 inches (DN50) to 12 inches (DN300). End Connections Flanged (ANSI Class 150 to 600). Materials Body Material Cast Iron or Carbon Steel (for higher pressures). Trim Materials Stainless Steel. Pilot & Options Pilot Types Reducing Pilot (P100A), Monitor Pilot (P102A), Dome-Loaded Pilot (P100C). Safety Options Designed to be paired with external Slam-Shut Valves (PSL/PSS) for absolute overpressure protection. Environment Operating Temperature Standard: -20°F to +150°F (-29°C to +66°C).

The ABB 07AB63BR1 Relay Output Module is designed for industrial automation systems, offering reliable and precise control over actuators and sensors in various applications.