1SDA057144R1 ABB E6V6300PR121/P-LI 6300 A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E6V6300PR121/P-LI 6300 A Air Circuit Breaker?

The ABB E6V6300PR121/P-LI, order code 1SDA057144R1, is a high-capacity SACE Emax E6 V air circuit breaker designed for protection, switching and isolation in demanding low-voltage power distribution systems. Rated at 6300 A, this four-pole fixed breaker combines ABB's E6 frame and V performance level with a PR121/P-LI 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 very high current capacity and dependable fault protection are required. The PR121/P-LI trip unit provides LI protection functions covering long-time overload and instantaneous short-circuit protection.

This configuration is a four-pole fixed circuit breaker with rear horizontal terminals and a rated current of 6300 A. Its combination of high current capacity, electronic protection and fixed switchboard construction makes it suitable for major incoming, feeder and distribution circuits in demanding electrical installations.

Key Advantages

• Very high 6300 A rated current for major low-voltage power distribution systems.
• E6 V performance platform designed for demanding high-current applications.
• PR121/P-LI electronic overcurrent release for dependable circuit protection.
• LI protection functions provide long-time overload and instantaneous short-circuit protection.
• Four-pole fixed configuration for high-current switchboard installations.
• Rear horizontal terminals support practical integration with switchboard busbar systems.
• Suitable for main incoming, transformer secondary and major feeder protection duties.
• ABB SACE Emax construction provides robust switching and protection for critical electrical infrastructure.

Key Features

• ABB SACE Emax E6 V series.
• 6300 A rated current.
• Four-pole configuration.
• Fixed execution.
• Rear horizontal terminals.
• PR121/P-LI electronic overcurrent release.
• Long-time overload protection (L).
• Instantaneous short-circuit protection (I).
• V performance level for demanding power distribution duties.
• Electronic overcurrent protection for high-current circuits.
• Designed for industrial and infrastructure low-voltage switchboards.
• Suitable for systems requiring a four-pole switching and protection solution.

High-Capacity Protection for Critical Power Distribution

Air circuit breakers such as the ABB SACE Emax E6 protect high-current low-voltage distribution systems against overloads and short-circuit faults while providing switching and isolation of major electrical circuits. With its 6300 A rating, the E6V6300 is suited to substantial main distribution systems where very high continuous currents must be controlled reliably.

The PR121/P-LI electronic release provides long-time overload and instantaneous short-circuit protection. Combined with the E6 V breaker platform, these functions provide dependable protection for busbars, conductors, transformers and connected equipment in industrial plants, infrastructure and other high-capacity electrical distribution 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 protection.
• High-current feeder and busbar protection.
• Critical infrastructure and large-scale electrical distribution networks.