1SDA057029R1 ABB E6H 6300 PR122/P-LSIG 6300A 3P Withdrawable Air Circuit Breaker

Why Choose the ABB E6H 6300 PR122/P-LSIG 6300A 3P Withdrawable Air Circuit Breaker?

The ABB 1SDA057029R1 is a high-performance SACE Emax E6H air circuit breaker moving part designed for protection and switching in high-current low-voltage electrical distribution systems. Rated at 6300 A, this three-pole withdrawable breaker incorporates an ABB PR122/P-LSIG R6300 electronic overcurrent release providing long-time, short-time, instantaneous and earth-fault protection.

As part of the proven ABB SACE Emax series, the E6H 6300 is engineered for demanding industrial, infrastructure and commercial power distribution applications. Its withdrawable moving-part construction allows the breaker to be isolated and removed from the associated fixed part, supporting efficient inspection, servicing and replacement in critical switchboard installations.

With a rated operational voltage of 690 V AC and ultimate and service short-circuit breaking capacities of 100 kA up to 690 V AC, the E6H provides robust performance in systems with substantial prospective fault currents. The PR122/P-LSIG trip unit adds comprehensive LSIG protection, while four auxiliary contacts and open/closed position indication support switchboard signalling and control.

Key Advantages

• High-current 6300 A SACE Emax air circuit breaker moving part.
• Three-pole configuration for high-capacity three-phase electrical networks.
• Advanced PR122/P-LSIG R6300 electronic overcurrent release.
• LSIG functionality provides long-time, short-time, instantaneous and earth-fault protection.
• 100 kA ultimate and service breaking capacity up to 690 V AC.
• 100 kA short-time withstand current for 1 s.
• Withdrawable construction supports efficient maintenance, inspection and replacement.
• Four change-over auxiliary contacts and open/closed position indication support signalling and control integration.

Key Features

• ABB SACE Emax E6H air circuit breaker platform.
• 6300 A rated uninterrupted current.
• Three-pole configuration.
• Withdrawable moving-part execution.
• PR122/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 operational voltage.
• Four change-over auxiliary contacts.
• Open/closed circuit-breaker position indication.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E6H 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 PR122/P-LSIG release combines long-time overload, short-time delayed short-circuit, instantaneous short-circuit and earth-fault protection in an advanced electronic trip unit. Together with the E6H frame's 6300 A current capability, 100 kA breaking performance and withdrawable construction, it provides comprehensive protection and maintainability for critical high-current distribution networks.

Typical Applications

• Main incoming circuit breakers in high-current low-voltage switchboards.
• Industrial power distribution systems.
• High-current feeder protection.
• Transformer secondary protection and switching.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.
• Generator and utility distribution systems.
• Switchboards requiring withdrawable high-current circuit breakers with LSIG protection.