1SDA057015R1 ABB E6H 6300 PR123/P-LSIG 6300A 3P Fixed Air Circuit Breaker

Why Choose the ABB E6H 6300 PR123/P-LSIG 6300A 3P Fixed Air Circuit Breaker?

The ABB 1SDA057015R1 is a high-performance SACE Emax E6H air circuit breaker designed for protection and switching in high-current low-voltage electrical distribution systems. Rated at 6300 A, this three-pole fixed breaker incorporates an ABB PR123/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 fixed construction with rear horizontal terminals provides a robust connection arrangement for permanent integration into high-capacity low-voltage switchboards.

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 platform is suited to installations with substantial prospective fault currents. The advanced PR123/P-LSIG trip unit combines comprehensive LSIG protection with the monitoring capabilities required for critical high-current distribution systems.

Key Advantages

• High-current 6300 A SACE Emax air circuit breaker for major power distribution systems.
• Three-pole configuration for three-phase electrical networks.
• Advanced PR123/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.
• Fixed construction with rear horizontal terminals for robust switchboard integration.
• Four auxiliary contacts and open/closed position indication support signalling and control systems.

Key Features

• ABB SACE Emax E6H air circuit breaker platform.
• 6300 A rated uninterrupted current.
• Three-pole configuration.
• Fixed execution.
• Rear horizontal terminals.
• PR123/P-LSIG R6300 electronic overcurrent release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• Earth-fault protection.
• 690 V AC rated operational voltage.
• Four auxiliary contacts with 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 PR123/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 rating and high short-circuit performance, it provides comprehensive protection for critical industrial and infrastructure 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.
• Fixed switchboard installations requiring comprehensive LSIG protection.