1SDA056923R1 ABB E4V4000 PR122/P-LI 4000A 4-Pole Air Circuit Breaker

Why Choose the ABB E4V4000 PR122/P-LI 4000A 4-Pole Air Circuit Breaker?

The ABB 1SDA056923R1 is a high-performance SACE Emax E4V air circuit breaker (ACB) designed for protection and switching of high-current low-voltage electrical distribution systems. As part of the ABB SACE Emax series, the E4V4000 combines a 4000 A current rating with the electronic PR122/P-LI protection release for dependable overload and short-circuit protection in demanding industrial and commercial installations.

This four-pole fixed circuit breaker features rear horizontal terminals and ABB's V short-circuit performance level. Its PR122/P-LI electronic trip unit provides long-time overload and instantaneous short-circuit protection, while the breaker is supplied with four auxiliary changeover contacts for signalling the circuit breaker's open and closed status.

With a rated uninterrupted current of 4000 A, rated operational voltage up to 690 V AC and an ultimate short-circuit breaking capacity of 150 kA at 400 V AC, the E4V4000 is engineered for high-capacity power distribution applications where robust protection, switching performance and operational reliability are essential.

Key Advantages

• High-capacity 4000 A air circuit breaker for low-voltage power distribution.
• Four-pole configuration for switching and protection of three-phase systems with neutral.
• Advanced PR122/P-LI electronic protection release.
• 150 kA ultimate breaking capacity at 400 V AC for demanding fault conditions.
• Rated operational voltage up to 690 V AC.
• Fixed installation with rear horizontal terminals.
• Four auxiliary changeover contacts for circuit-breaker status indication.

Key Features

• ABB SACE Emax E4V series.
• 4000 A rated uninterrupted current.
• 4-pole fixed circuit breaker.
• PR122/P-LI electronic trip unit.
• Long-time overload and instantaneous short-circuit protection.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• V short-circuit performance level.
• Rear flat horizontal terminal arrangement.
• Four auxiliary changeover contacts.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E4V4000 provide switching, isolation and protection for high-current low-voltage distribution circuits. The breaker automatically interrupts current when its electronic protection release detects operating conditions outside the configured protection thresholds, helping protect cables, busbars and connected electrical equipment from damaging overload and short-circuit currents.

The PR122/P-LI electronic release provides configurable protection suitable for industrial distribution systems, switchboards and infrastructure applications. Combined with the E4V breaker's high short-circuit performance and 4000 A current capability, it provides robust protection for installations with substantial electrical loads and high prospective fault currents.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial electrical distribution systems.
• 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 control and distribution panels.