1SDA056875R1 ABB E4H4000 PR122/P-LI 4000A 4P Withdrawable Air Circuit Breaker Moving Part

Why Choose the ABB E4H4000 PR122/P-LI 4000A 4P Withdrawable Air Circuit Breaker?

The ABB E4H4000 PR122/P-LI, order code 1SDA056875R1, is a high-performance SACE Emax E4H air circuit breaker moving part designed for protection and switching in high-current low-voltage electrical distribution systems. Rated at 4000 A, this four-pole withdrawable configuration combines the robust ABB SACE Emax platform with a PR122/P-LI R4000 electronic overcurrent release.

The PR122/P-LI release provides long-time (L) and instantaneous (I) overcurrent protection, helping protect electrical installations against sustained overloads and severe short-circuit conditions. The E4H performance level provides substantial fault-interruption capability for main distribution switchboards, industrial power systems and other high-capacity installations.

This configuration is supplied as the four-pole withdrawable moving part of the E4H4000 circuit breaker and is designed for use with the corresponding ABB SACE Emax fixed part. It is rated for 4000 A continuous current and 690 V AC operation, with ultimate and service short-circuit breaking capacities of 100 kA from 400 V to 500 V AC and 85 kA at 690 V AC.

Key Advantages

• High-current 4000 A SACE Emax E4H circuit breaker moving part for demanding low-voltage distribution.
• Four-pole configuration provides switching and protection across four conductors.
• PR122/P-LI electronic overcurrent release provides long-time and instantaneous protection functions.
• Withdrawable moving-part construction facilitates inspection, servicing and replacement.
• Designed for use with the corresponding ABB SACE Emax withdrawable fixed part.
• High short-circuit performance with 100 kA Icu and Ics from 400 V to 500 V AC.
• Maintains 85 kA Icu and Ics at 690 V AC.
• Four auxiliary contacts and open/closed position indication support switchboard monitoring and control.

Key Features

• ABB SACE Emax E4H series.
• 4000 A rated current.
• Four-pole circuit-breaker configuration.
• PR122/P-LI R4000 electronic overcurrent release.
• Long-time overload protection (L).
• Instantaneous short-circuit protection (I).
• Withdrawable moving-part execution.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 100 kA rated short-time withstand current for 1 s.
• Four auxiliary contacts with circuit-breaker open/closed position indication.

High-Performance 4000A Protection with Withdrawable Serviceability

The ABB SACE Emax E4H platform is designed for high-capacity low-voltage distribution systems where substantial short-circuit performance and dependable electronic protection are required. The PR122/P-LI electronic release combines long-time overload and instantaneous short-circuit protection, helping safeguard busbars, feeders and connected electrical equipment against damaging overcurrent conditions.

The withdrawable E4H4000 configuration is particularly suitable for switchboards where serviceability and operational flexibility are important. The circuit-breaker moving part can be withdrawn from its corresponding fixed part for inspection, maintenance or replacement, while its 4000 A rating and up to 100 kA short-circuit breaking capacity make it suitable for demanding industrial, commercial and infrastructure distribution systems.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• High-capacity industrial power distribution systems.
• Main incoming and high-current feeder protection.
• Commercial and infrastructure electrical distribution.
• Manufacturing and process-industry switchgear.
• Transformer and generator distribution systems.
• Switchboards requiring withdrawable circuit breakers for improved serviceability.
• Electrical installations requiring four-pole switching and high short-circuit performance.