1SDA056924R1 ABB E4V 4000 PR122/P-LSI 4000A 4P Fixed Air Circuit Breaker

Why Choose the ABB E4V 4000 PR122/P-LSI 4000A 4P Fixed Air Circuit Breaker?

The ABB E4V 4000 PR122/P-LSI, order code 1SDA056924R1, is a high-performance four-pole fixed air circuit breaker (ACB) designed for protection and switching in high-current low-voltage electrical distribution systems. Part of the proven ABB SACE Emax E4 series, it combines a rated uninterrupted current of 4000 A with the advanced PR122/P-LSI R4000 electronic overcurrent release.

The E4V performance level provides very high short-circuit interruption capability for demanding industrial, commercial and infrastructure power systems. Its PR122/P-LSI electronic release provides long-time, short-time and instantaneous protection functions, helping protect conductors, switchboards and connected equipment against overload and short-circuit conditions while supporting selective protection coordination.

This configuration is a four-pole fixed circuit breaker with rear flat horizontal terminals. Rated for operation up to 690 V AC and providing an ultimate short-circuit breaking capacity of 150 kA at 400 V AC, the E4V 4000 is well suited to major switchboards, transformer distribution systems, industrial power centres and other installations with substantial prospective fault currents.

Key Advantages

• High-capacity 4000 A air circuit breaker for demanding low-voltage distribution systems.
• Four-pole fixed configuration for comprehensive switching and circuit protection.
• Advanced PR122/P-LSI R4000 electronic overcurrent release.
• Provides long-time, short-time and instantaneous protection.
• Exceptional 150 kA ultimate breaking capacity at 400 V AC.
• Rear flat horizontal terminals for integration into high-current switchboard assemblies.
• ABB SACE Emax construction engineered for reliable operation in critical power distribution systems.

Key Features

• ABB SACE Emax E4V air circuit breaker.
• 4000 A rated uninterrupted current.
• 4-pole configuration.
• PR122/P-LSI R4000 electronic overcurrent release.
• Fixed circuit-breaker version.
• Rear flat horizontal terminal connections.
• Rated operational voltage up to 690 V AC.
• Rated insulation voltage of 1000 V.
• Rated impulse withstand voltage of 12 kV.
• V short-circuit performance level.
• Rated short-time withstand current of 100 kA for 1 s.
• Designed to IEC requirements for low-voltage circuit breakers.

High-Performance Protection for Critical Power Distribution

Air circuit breakers such as the ABB E4V 4000 provide primary switching and protection for high-current low-voltage electrical systems. The E4V performance level is designed for installations with particularly high prospective fault currents, combining a continuous current capability of 4000 A with short-circuit interruption performance reaching 150 kA at common industrial voltages.

The PR122/P-LSI electronic release provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. These functions enable protection settings to be coordinated across the distribution system, helping achieve reliable fault clearance and selectivity for major incoming supplies, feeders and critical electrical loads.

Typical Applications

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