1SDA056765R1 ABB E3L2500 PR122/P-LSIG 2500A 4P Air Circuit Breaker

Why Choose the ABB E3L2500 PR122/P-LSIG 2500A 4P Air Circuit Breaker?

The ABB E3L2500 PR122/P-LSIG, order code 1SDA056765R1, is a high-performance SACE Emax E3L air circuit breaker designed for protection and switching in high-current low-voltage electrical distribution systems. Rated at 2500 A, this four-pole fixed circuit breaker combines the robust E3L platform with an advanced PR122/P-LSIG electronic overcurrent release.

The PR122/P-LSIG release provides long-time (L), short-time (S), instantaneous (I) and earth-fault (G) protection, providing comprehensive protection against overload, short-circuit and earth-fault conditions. This combination is well suited to main distribution switchboards, industrial power systems and critical installations requiring selective and dependable high-current circuit protection.

This version is supplied as a four-pole fixed circuit breaker with rear horizontal terminals and a PR122/P-LSIG R2500 release matched to its 2500 A current rating. With a rated operational voltage of 690 V AC and high short-circuit interruption capability, the E3L2500 is designed for demanding industrial, commercial and infrastructure power-distribution duties.

Key Advantages

• High-current 2500 A SACE Emax E3L air circuit breaker for demanding low-voltage distribution.
• Four-pole configuration provides switching and protection across four conductors.
• PR122/P-LSIG electronic overcurrent release provides L, S, I and G protection functions.
• Integrated earth-fault protection provides additional protection for distribution systems.
• Short-time protection supports selective coordination between upstream and downstream protective devices.
• Fixed construction for permanent integration into low-voltage switchboards.
• Rear horizontal terminals provide a practical connection arrangement for switchboard busbars.
• High short-circuit performance with up to 130 kA Icu at 400 V AC.

Key Features

• ABB SACE Emax E3L series.
• 2500 A rated current.
• Four-pole circuit-breaker configuration.
• PR122/P-LSIG R2500 electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Earth-fault protection (G).
• Fixed circuit-breaker execution with rear horizontal main terminals.
• Four auxiliary contacts with circuit-breaker open/closed position indication.

Comprehensive High-Current Protection for Electrical Distribution

Air circuit breakers such as the ABB SACE Emax E3L protect high-capacity low-voltage distribution systems against damaging overcurrent and fault conditions. The PR122/P-LSIG electronic release combines overload, short-time, instantaneous and earth-fault protection, helping safeguard busbars, feeders and connected equipment while supporting coordinated protection throughout the electrical installation.

The E3L2500 PR122/P-LSIG combines a substantial 2500 A current rating, four-pole construction and fixed rear-connected design with comprehensive electronic protection. These characteristics make it particularly suitable for main switchboards and other high-capacity distribution assemblies where reliable protection, selectivity and earth-fault detection are required.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• High-current incoming and feeder protection.
• Commercial and infrastructure electrical distribution.
• Manufacturing and process-industry switchgear.
• Transformer and generator distribution systems.
• High-capacity distribution boards requiring selective overcurrent protection.
• Electrical installations requiring four-pole switching and earth-fault protection.