1SDA057138R1 ABB E6V 6300 PR121/P-LSIG 6300A 3P Fixed Air Circuit Breaker

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

The ABB 1SDA057138R1 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-LSIG R6300 electronic overcurrent release providing long-time overload, short-time delayed, instantaneous short-circuit and earth-fault protection.

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

The PR121/P-LSIG trip unit provides comprehensive electronic protection for critical distribution circuits, including integrated earth-fault protection. Four change-over auxiliary contacts and circuit-breaker open/closed position indication further 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-LSIG R6300 electronic overcurrent release.
• LSIG functionality provides long-time, short-time, instantaneous and earth-fault protection.
• 150 kA rated short-circuit breaking capacity at 400 V AC.
• Adjustable overload and short-circuit protection settings support system coordination.
• Fixed construction with rear horizontal terminals for robust switchboard integration.
• Four change-over auxiliary contacts and open/closed position indication support signalling and control.

Key Features

• ABB SACE Emax E6V air circuit breaker platform.
• 6300 A rated uninterrupted current.
• Three-pole configuration.
• Fixed execution.
• Rear horizontal terminals.
• PR121/P-LSIG R6300 electronic overcurrent release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated earth-fault protection.
• 690 V AC rated voltage.
• Four change-over auxiliary contacts with open/closed position indication.

Comprehensive Protection for High-Current 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 electrical conditions and initiates circuit-breaker operation when configured overload, short-circuit or earth-fault thresholds are exceeded, helping protect busbars, cables, transformers and connected electrical equipment.

The PR121/P-LSIG release combines long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault protection. Together with the 6300 A E6V frame and its high breaking capacity, this provides comprehensive protection for critical high-capacity distribution networks where reliable fault interruption and selective coordination 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 comprehensive LSIG protection.