1SDA056979R1 ABB E6H5000 PR122/P-LI 5000A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E6H5000 PR122/P-LI 5000A Air Circuit Breaker?

The ABB 1SDA056979R1, extended product type E6H5000PR122/P-LIIn=5000A3pFHR, is a high-current SACE Emax air circuit breaker (ACB) designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax E6H series, this three-pole fixed circuit breaker combines a 5000 A current rating with the PR122/P-LI R5000 electronic overcurrent release.

The E6H5000 is engineered for major industrial, commercial and infrastructure power distribution applications where dependable overload and short-circuit protection is essential. Its PR122/P-LI R5000 electronic trip unit provides long-time and instantaneous protection functions, helping protect cables, busbars, switchgear and connected electrical equipment against sustained overloads and severe short-circuit faults.

This version features a three-pole fixed configuration with rear horizontal terminals, a rated permanent current of 5000 A and a rated voltage of 690 V AC. The breaker is fitted with four auxiliary change-over contacts and open/closed circuit-breaker position indication, providing a robust solution for high-capacity switchboards and critical low-voltage distribution installations.

Key Advantages

• High-current ABB SACE Emax E6H air circuit breaker for demanding low-voltage distribution systems.
• 5000 A rated permanent current for major industrial and infrastructure installations.
• PR122/P-LI R5000 electronic overcurrent release with long-time and instantaneous protection.
• 100 kA rated short-circuit breaking capacity at 400 V AC.
• Three-pole fixed configuration for robust integration into high-capacity switchboards.
• Rear horizontal terminals for connection within compatible switchgear assemblies.
• Four auxiliary change-over contacts and circuit-breaker open/closed position indication.

Key Features

• ABB SACE Emax E6H series.
• 5000 A rated current.
• Three-pole configuration.
• Fixed circuit breaker.
• Rear horizontal terminals.
• PR122/P-LI R5000 electronic trip unit.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• 690 V AC rated voltage.
• 100 kA short-circuit breaking capacity at 400 V AC.
• Adjustable overload protection from 2000–5000 A.
• Adjustable instantaneous short-circuit protection from 7500–75000 A.
• Four auxiliary change-over contacts fitted.
• Open/closed circuit-breaker position indication.
• Optional motor drive capability.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E6H5000 provide switching and protection for high-capacity low-voltage distribution networks. With a continuous current capability of 5000 A, the E6H platform is particularly suited to main incoming supplies, large switchboards and industrial distribution systems where substantial electrical loads and prospective fault currents must be safely managed.

The PR122/P-LI electronic release provides complementary long-time and instantaneous protection. Long-time protection responds to sustained overload conditions that could otherwise damage conductors and equipment, while instantaneous protection provides rapid interruption during severe short-circuit faults. The fixed three-pole construction and rear horizontal terminals make this breaker suitable for permanent integration into compatible high-current SACE Emax switchgear assemblies.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• High-current industrial power distribution systems.
• Large switchgear and busbar assemblies.
• Transformer secondary protection and distribution.
• Manufacturing and heavy process plants.
• Data centre and critical infrastructure power distribution.
• Commercial and utility infrastructure installations.
• High-capacity electrical systems requiring electronic overload and short-circuit protection.