1SDA055576R1 ABB E6H/f 5000 PR121/P-LI 5000A 4-Pole Withdrawable Air Circuit Breaker Moving Part

Why Choose the ABB E6H/f 5000 PR121/P-LI 5000A 4-Pole Withdrawable Air Circuit Breaker Moving Part?

The ABB E6H/f 5000 PR121/P-LI, order code 1SDA055576R1, is the withdrawable moving part of a high-current ABB SACE Emax E6H air circuit breaker. Rated at 5000 A, this four-pole configuration combines the E6H high-performance frame with a PR121/P-LI R5000 electronic overcurrent release for dependable protection of demanding low-voltage power distribution systems.

Designed as a withdrawable moving part, the breaker can be used with the appropriate Emax fixed part to provide the operational flexibility associated with withdrawable switchgear. It features a full-size neutral and is fitted with four auxiliary contacts plus open/closed position indication for integration with switchboard signalling and control systems.

The PR121/P-LI release provides long-time overload and instantaneous short-circuit protection. The E6H platform supports operation up to 690 V AC and delivers 100 kA Icu and Ics at 415 V AC, providing substantial fault-interruption capability for major industrial and infrastructure distribution circuits.

Key Advantages

• High 5000 A current rating for major low-voltage distribution circuits.
• Four-pole full-size-neutral configuration for high-current power distribution.
• Withdrawable moving-part construction supports flexible switchgear operation and maintenance.
• PR121/P-LI R5000 electronic release provides dependable overcurrent protection.
• Long-time and instantaneous protection covers overloads and severe short circuits.
• 100 kA Icu and Ics at 415 V AC provides high fault-interruption capability.
• Four auxiliary contacts support breaker status signalling.
• Part of the established ABB SACE Emax E6 air circuit breaker family.

Key Features

• ABB SACE Emax E6H/f 5000 platform.
• 5000 A rated current.
• Four-pole configuration.
• Full-size neutral.
• Withdrawable moving part (W MP).
• PR121/P-LI R5000 electronic overcurrent release.
• LI protection functions: long-time and instantaneous.
• 690 V AC rated operational voltage.
• 100 kA ultimate short-circuit breaking capacity at 415 V AC.
• 100 kA service short-circuit breaking capacity at 415 V AC.
• 100 kA short-time withstand current for 1 second.
• 85 kA short-time withstand current for 3 seconds.
• Four auxiliary contacts.
• Open/closed breaker position indication.

Reliable PR121/P-LI Protection for 5000A Distribution

The ABB E6H 5000 platform is designed for major low-voltage circuits where exceptionally high continuous-current capacity and substantial short-circuit performance are required. The withdrawable moving-part configuration enables the breaker to be used with its corresponding fixed part, supporting inspection, servicing and switchgear operational flexibility in critical installations.

The PR121/P-LI R5000 electronic release provides long-time protection against sustained overload conditions and instantaneous protection for rapid interruption of severe short circuits. Combined with the E6H frame's 100 kA breaking capability at 415 V AC, it provides dependable protection for high-power distribution networks.

Typical Applications

• Main incomers in high-current low-voltage switchboards.
• Industrial power distribution systems.
• High-power feeder circuits.
• Withdrawable switchgear assemblies.
• Bus coupler and bus-section applications.
• Manufacturing and process plants.
• Large commercial and infrastructure facilities.
• High-fault-level low-voltage distribution networks.