1SDA057137R1 ABB E6V 6300 PR121/P-LSI 6300A 3P Fixed Air Circuit Breaker

Why Choose the ABB E6V 6300 PR121/P-LSI 6300A 3P Fixed Air Circuit Breaker?

The ABB 1SDA057137R1 is a high-performance SACE Emax E6V air circuit breaker designed for protection and switching in demanding high-current low-voltage electrical distribution systems. Rated at 6300 A, this three-pole fixed breaker incorporates an ABB PR121/P-LSI R6300 electronic overcurrent release providing long-time overload, short-time delayed and instantaneous short-circuit protection.

As part of the proven ABB SACE Emax series, the E6V 6300 combines high current-carrying capability with the enhanced short-circuit performance of the E6V frame. Its fixed construction and rear horizontal terminals provide a robust connection arrangement for permanent integration into high-capacity industrial, infrastructure and commercial low-voltage switchboards.

The PR121/P-LSI electronic trip unit provides coordinated protection against overload and short-circuit conditions without an integrated earth-fault protection function. Four auxiliary contacts and circuit-breaker open/closed position indication support integration with switchboard signalling, monitoring and control systems.

Key Advantages

• High-current 6300 A SACE Emax air circuit breaker for major power distribution systems.
• Three-pole configuration for high-capacity three-phase electrical networks.
• PR121/P-LSI R6300 electronic overcurrent release.
• LSI functionality provides long-time, short-time and instantaneous protection.
• E6V frame designed for demanding installations with high prospective fault currents.
• Fixed construction for permanent switchboard installation.
• Rear horizontal terminals provide a robust high-current connection arrangement.
• Four auxiliary contacts and open/closed position indication support signalling and control integration.

Key Features

• ABB SACE Emax E6V air circuit breaker platform.
• 6300 A rated current.
• Three-pole configuration.
• Fixed execution.
• Rear horizontal terminals.
• PR121/P-LSI R6300 electronic overcurrent release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• Four auxiliary contacts.
• Open/closed circuit-breaker position indication.
• Designed for critical high-current low-voltage power distribution.

High-Performance Protection for Critical Power Distribution

Air circuit breakers such as the ABB SACE Emax E6V provide switching and overcurrent protection for major low-voltage distribution circuits. The electronic trip unit monitors current conditions and initiates circuit-breaker operation when configured overload or short-circuit thresholds are exceeded, helping protect busbars, cables, transformers and connected electrical equipment.

The PR121/P-LSI release combines long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. Together with the 6300 A E6V frame, this provides a dependable protection solution for critical high-capacity distribution networks where selective fault protection and reliable circuit interruption are essential.

Typical Applications

• Main incoming circuit breakers in high-current low-voltage switchboards.
• Industrial power distribution systems.
• High-capacity feeder protection.
• Transformer secondary protection and switching.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.
• Generator and utility distribution systems.
• Fixed switchboard installations requiring high-current LSI protection.