1SDA056993R1 ABB E6H5000 PR121/P-LSI 5000A 3-Pole Withdrawable Air Circuit Breaker Moving Part

Why Choose the ABB E6H5000 PR121/P-LSI 5000A 3-Pole Withdrawable Air Circuit Breaker?

The ABB 1SDA056993R1 is a high-performance SACE Emax E6H air circuit breaker moving part designed for protection and switching of high-current low-voltage electrical distribution systems. As part of the ABB New Emax series, the E6H5000 combines a substantial 5000 A current rating with the electronic PR121/P-LSI overcurrent release for dependable protection in demanding industrial and infrastructure power distribution applications.

This three-pole withdrawable circuit breaker moving part is equipped with the PR121/P-LSI electronic trip unit, providing long-time overload (L), selective short-circuit (S) and instantaneous short-circuit (I) protection. Its withdrawable configuration allows the circuit breaker moving part to be isolated and removed from the associated fixed part, supporting inspection, maintenance and replacement within suitably configured switchgear.

With a rated current of 5000 A and an E6H short-circuit performance level of 100 kA, the E6H5000 is engineered for high-capacity power distribution systems where robust fault protection, selective coordination and maintainability are essential. The moving part is also fitted with four auxiliary contacts for open and closed circuit-breaker status indication.

Key Advantages

• High-capacity 5000 A air circuit breaker moving part for low-voltage power distribution.
• Three-pole configuration for three-phase electrical systems.
• Advanced PR121/P-LSI electronic protection release.
• LSI protection provides overload, selective short-circuit and instantaneous short-circuit protection.
• 100 kA E6H short-circuit performance for demanding electrical installations.
• Withdrawable moving-part design supports switchgear maintenance and servicing.
• Four auxiliary contacts provide open and closed circuit-breaker status indication.
• Designed for high-current industrial and infrastructure distribution systems.

Key Features

• ABB SACE Emax E6H series.
• 5000 A rated current.
• 3-pole withdrawable moving part.
• PR121/P-LSI electronic trip unit.
• Long-time overload (L) protection.
• Selective short-circuit (S) protection.
• Instantaneous short-circuit (I) protection.
• 100 kA short-circuit performance.
• H performance level.
• Four auxiliary contacts for open / closed position indication.
• Designed for use with the corresponding E6 withdrawable fixed part.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E6H5000 provide switching and protection for high-current low-voltage distribution circuits. The electronic trip unit monitors electrical conditions and initiates circuit interruption when configured protection thresholds are exceeded, helping protect busbars, cables, transformers and connected equipment against damaging overload and short-circuit currents.

The PR121/P-LSI release combines long-time, selective short-circuit and instantaneous protection functions, allowing the breaker to support coordinated protection strategies in complex electrical distribution networks. The withdrawable moving-part configuration also facilitates isolation, maintenance and replacement within compatible switchgear, making the 1SDA056993R1 particularly suitable for critical high-capacity installations where serviceability is important.

Typical Applications

• Low-voltage main distribution switchboards.
• Withdrawable industrial switchgear assemblies.
• High-current incoming and feeder circuits.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.
• Transformer secondary protection and switching.
• Generator and utility distribution systems.
• High-capacity electrical distribution installations requiring serviceable switchgear.