1SDA056916R1 ABB E4V4000PR122/P-LSI 4000A 3-Pole Air Circuit Breaker

Why Choose the ABB E4V4000PR122/P-LSI 4000A Air Circuit Breaker?

The ABB E4V4000PR122/P-LSI, order code 1SDA056916R1, is a high-performance 4000 A three-pole air circuit breaker designed for demanding low-voltage power distribution systems. Part of the ABB SACE Emax E4 series, this fixed breaker combines the E4V very-high short-circuit performance class with the advanced PR122/P electronic overcurrent protection release.

The breaker is equipped with an ABB PR122/P-LSI R4000 electronic overcurrent release, providing long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. This LSI configuration supports selective coordination while protecting cables, busbars, transformers and downstream equipment against sustained overloads and short-circuit faults.

With a rated uninterrupted current of 4000 A, a three-pole fixed configuration and rear flat horizontal terminals, the E4V4000PR122/P-LSI is engineered for permanent integration into high-capacity low-voltage switchgear. Its E4V performance class provides an ultimate short-circuit breaking capacity of 150 kA at 400/415 V AC, 130 kA at 500 V AC and 100 kA at 660/690 V AC.

Key Advantages

• High-capacity 4000 A air circuit breaker for demanding low-voltage power distribution.
• Three-pole fixed configuration for permanent switchboard installation.
• Rear flat horizontal terminals for integration with compatible switchgear busbar systems.
• Advanced PR122/P-LSI R4000 electronic protection release.
• Long-time, short-time and instantaneous overcurrent protection functions.
• Short-time protection supports selective coordination with downstream protective devices.
• Exceptional 150 kA Icu and Ics at 400/415 V AC.
• Maintains 130 kA at 500 V AC and 100 kA at 660/690 V AC.
• 100 kA short-time withstand current for 1 s.
• Fitted with four auxiliary contacts and open/closed position indication.

Key Features

• ABB SACE Emax E4V air circuit breaker platform.
• 4000 A rated uninterrupted current.
• Three-pole construction.
• Fixed (F) breaker execution.
• Rear flat horizontal terminal connection.
• PR122/P-LSI R4000 electronic overcurrent release.
• Long-time overload protection.
• Short-time delayed short-circuit protection.
• Instantaneous short-circuit protection.
• 690 V AC rated operational voltage.
• 150 kA Icu and Ics at 400/415 V AC.
• 130 kA Icu and Ics at 500 V AC.
• 100 kA Icu and Ics at 660/690 V AC.
• 100 kA Icw for 1 s and 75 kA Icw for 3 s.
• 1000 V rated insulation voltage and 12 kV impulse withstand voltage.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E4 protect low-voltage electrical networks against damaging overcurrents while providing dependable switching and isolation of high-current circuits. The E4V performance class delivers exceptionally high fault-interruption capability, making it suitable for main incomers, transformer secondaries and major feeders where very high prospective short-circuit currents can occur.

The PR122/P electronic release continuously monitors circuit conditions and initiates breaker operation when configured protection thresholds are exceeded. In this LSI configuration, long-time protection responds to sustained overloads, short-time protection provides a controlled response that supports selective coordination, and instantaneous protection rapidly interrupts severe short-circuit faults.

Typical Applications

• Main low-voltage switchboards and power distribution assemblies.
• Industrial high-current power distribution systems.
• Transformer secondary and main incomer protection.
• Large feeder and busbar circuits requiring selective protection.
• Networks with exceptionally high prospective short-circuit currents.
• Manufacturing and process plant electrical systems.
• Data centres and mission-critical electrical infrastructure.
• Commercial buildings, utilities and critical infrastructure installations.