The ABB 1SDA055746R1 E1N 1250 PR121/P-LSIG is a moving part for the SACE Emax series circuit breakers, designed to deliver robust protection and functionality in medium-voltage electrical systems. With comprehensive overcurrent release features, it is suited for demanding applications that require reliable power management and safety. Below is a detailed breakdown of its specifications, features, and applications:

Key Specifications:

• Model: ABB 1SDA055746R1 E1N 1250 PR121/P-LSIG
• Rated Current (In): 1250A
• Poles: 3-pole configuration for three-phase electrical systems.
• Protection Unit: PR121/P-LSIG.
• Auxiliary Contacts: Includes 4 auxiliary contacts, useful for monitoring and control.
• Breaker Position Indicator: Displays the circuit breaker’s Open/Closed status, contributing to safe and efficient operations.

Features:

• Comprehensive Overcurrent Protection: The PR121/P-LSIG unit allows for fine-tuned settings to guard against overloads, short circuits, and ground faults, making it suitable for critical applications requiring reliable protection.
• Robust and Durable Design: Constructed with industrial-grade materials to ensure longevity and resilience in harsh environments.
• Enhanced Safety: Equipped with an Open/Closed position indicator, allowing operators to verify the breaker’s status for safe handling and maintenance.

Applications:

The ABB 1SDA055746R1 is ideal for various industrial and commercial applications, particularly in environments where uninterrupted operation and safety are essential. It is commonly used in electrical distribution and control systems that demand precise overcurrent protection and ground fault detection.

Additional Information:

• Compatibility: Specifically built for the ABB SACE Emax series, making it suitable for both new installations and upgrades in existing systems.
• Reliable Performance: Provides dependable protection, essential for maintaining the integrity and uptime of electrical systems in industrial facilities.