1SDA057011R1 ABB E6H 6300 PR122/P-LI 6300A 3P Fixed Air Circuit Breaker

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

The ABB E6H 6300 PR122/P-LI, order code 1SDA057011R1, is a high-capacity three-pole fixed air circuit breaker (ACB) designed for protection and switching in demanding low-voltage power distribution systems. Part of the ABB SACE Emax E6 series, it combines a rated uninterrupted current of 6300 A with the PR122/P-LI R6300 electronic overcurrent release.

The E6H performance level is engineered for very high-current installations requiring substantial short-circuit interruption capability. Its PR122/P-LI electronic release provides long-time overload and instantaneous short-circuit protection, helping safeguard switchboards, conductors and connected equipment against sustained overcurrents and severe short-circuit faults.

This configuration is a three-pole fixed circuit breaker with rear horizontal terminals. Rated for 690 V AC operation and providing a rated ultimate short-circuit breaking capacity of 100 kA at 400 V AC, it is also fitted with four auxiliary contacts and open/closed circuit-breaker position indication for integration into critical high-current switchgear.

Key Advantages

• Very high 6300 A rated uninterrupted current for major low-voltage distribution systems.
• Three-pole fixed configuration for high-current three-phase electrical networks.
• PR122/P-LI R6300 electronic overcurrent release.
• Provides long-time overload and instantaneous short-circuit protection.
• 100 kA ultimate short-circuit breaking capacity at 400 V AC.
• Rear horizontal terminals for integration into high-current switchboard assemblies.
• Four auxiliary change-over contacts provide circuit-breaker status signalling.

Key Features

• ABB SACE Emax E6H air circuit breaker.
• 6300 A rated uninterrupted current.
• 3-pole configuration.
• PR122/P-LI R6300 electronic overcurrent release.
• Fixed circuit-breaker construction.
• Rear horizontal terminal connections.
• Rated voltage of 690 V AC.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• Four auxiliary change-over contacts.
• Open/closed circuit-breaker position indication.
• Optional motor operating mechanism capability.

Reliable Protection for Very High-Current Power Distribution

Air circuit breakers such as the ABB E6H 6300 provide primary switching and protection for large low-voltage electrical systems. With a rated uninterrupted current of 6300 A and an ultimate short-circuit breaking capacity of 100 kA at 400 V AC, this SACE Emax breaker is suited to major incoming circuits and distribution systems where very high continuous current capacity and dependable fault interruption are required.

The PR122/P-LI electronic release provides long-time overload and instantaneous short-circuit protection. Its adjustable protection ranges allow the breaker to be configured for the characteristics of the protected installation, while the fixed E6H construction and rear horizontal terminals provide a robust arrangement for permanently installed high-current switchgear.

Typical Applications

• Main incoming protection in very high-capacity low-voltage switchboards.
• Industrial power distribution and heavy process plants.
• Transformer secondary and distribution protection.
• Generator and utility distribution systems.
• Large data centres and critical infrastructure power systems.
• Heavy manufacturing and large commercial facilities.
• High-current feeder and power distribution centre protection.