1SDA057114R1 ABB E6V5000PR121/P-LSIG 5000 A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E6V5000PR121/P-LSIG 5000 A Air Circuit Breaker?

The ABB E6V5000PR121/P-LSIG, order code 1SDA057114R1, is a high-performance SACE Emax E6 V air circuit breaker designed for protection, switching and isolation in demanding low-voltage power distribution systems. Rated at 5000 A, this four-pole fixed breaker combines ABB's E6 V high-breaking-capacity platform with a PR121/P-LSIG R5000 electronic overcurrent release.

As part of the ABB SACE Emax range, the breaker is engineered for industrial switchboards, power distribution centres and critical infrastructure where high current capacity and comprehensive fault protection are essential. The PR121/P-LSIG trip unit provides LSIG protection functions covering long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection.

This configuration is a four-pole fixed circuit breaker with rear horizontal terminals and a rated current of 5000 A. It is supplied with four auxiliary contacts and open/closed position indication, providing a robust solution for main incoming, feeder and high-capacity distribution duties.

Key Advantages

• High-capacity 5000 A SACE Emax air circuit breaker for demanding power distribution systems.
• E6 V high-performance breaker platform for installations with substantial prospective fault currents.
• PR121/P-LSIG R5000 electronic overcurrent release for comprehensive circuit protection.
• LSIG protection functions cover overload, short-time and instantaneous short-circuit faults plus earth faults.
• Four-pole fixed configuration for high-current switchboard applications.
• Rear horizontal terminals provide a practical connection arrangement for switchgear busbars.
• Supplied with four auxiliary contacts and open/closed breaker position indication.
• Suitable for critical industrial, infrastructure and large-scale electrical distribution systems.

Key Features

• ABB SACE Emax E6 V series.
• 5000 A rated current.
• Four-pole configuration.
• Fixed execution.
• Rear horizontal terminals.
• PR121/P-LSIG R5000 electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Earth-fault protection (G).
• Four auxiliary contacts for breaker status signalling.
• Open/closed breaker position indication.

Advanced Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E6 are used to protect high-current low-voltage distribution systems against overloads, short circuits and earth faults. The E6 V configuration is intended for demanding installations requiring substantial current-carrying capacity and high fault-interruption performance, making it well suited to main distribution switchboards and critical power systems.

The PR121/P-LSIG electronic release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. These functions allow the breaker to protect conductors, busbars and connected equipment while supporting coordinated protection strategies across complex industrial and infrastructure electrical networks.

Typical Applications

• Main incoming protection for high-current low-voltage switchboards.
• Large industrial power distribution systems.
• Manufacturing and process plant electrical infrastructure.
• Power distribution centres and main switchboards.
• Transformer secondary and high-current feeder applications.
• Commercial and infrastructure electrical installations.
• Critical power and large-scale electrical distribution networks.