1SDA056917R1 ABB E4V4000 PR122/P-LSIG 4000A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E4V4000 PR122/P-LSIG 4000A Air Circuit Breaker?

The ABB 1SDA056917R1, extended product type E4V4000PR122/P-LSIGIn=4000A3pFHR, is a high-performance SACE Emax air circuit breaker (ACB) designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax E4V series, this three-pole fixed circuit breaker combines a 4000 A current rating with the advanced PR122/P-LSIG electronic overcurrent release.

The E4V4000 is engineered for high-current industrial and commercial power distribution applications where comprehensive protection against overloads, short circuits and earth faults is required. Its PR122/P-LSIG R4000 electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection functions, helping safeguard switchgear, cables and connected equipment while supporting selective protection within complex electrical distribution networks.

With a rated uninterrupted current of 4000 A, rated operational voltage of 690 V AC and an ultimate short-circuit breaking capacity of 150 kA at 400 V AC, the E4V4000 is suited to substantial power distribution installations with high prospective fault currents. This model features a three-pole fixed configuration with rear horizontal terminals and is fitted with four auxiliary change-over contacts plus circuit-breaker open/closed position indication.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker for demanding low-voltage distribution systems.
• 4000 A rated uninterrupted current for high-current industrial and commercial installations.
• PR122/P-LSIG electronic overcurrent release providing comprehensive LSIG protection.
• 150 kA ultimate short-circuit breaking capacity at 400 V AC.
• Long-time, short-time, instantaneous and ground-fault protection functions.
• Three-pole fixed configuration with rear horizontal terminals.
• Four auxiliary change-over contacts and circuit-breaker open/closed position indication.

Key Features

• ABB SACE Emax E4V series.
• 4000 A rated current.
• Three-pole configuration.
• Fixed circuit breaker.
• Rear horizontal terminals.
• PR122/P-LSIG R4000 electronic trip unit.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated ground-fault protection.
• 690 V AC rated operational voltage.
• 150 kA Icu at 400 V AC.
• 100 kA Icu at 690 V AC.
• Four auxiliary change-over contacts fitted.
• Open/closed circuit-breaker position indication.

Advanced Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E4V4000 protect low-voltage distribution networks by interrupting potentially damaging currents when abnormal operating conditions occur. The E4V platform combines a high continuous current rating with substantial short-circuit breaking performance, making it suitable for main switchboards, industrial distribution systems and installations where high prospective fault currents must be safely controlled.

The PR122/P-LSIG electronic release provides four complementary protection functions. Long-time protection responds to sustained overloads, short-time protection supports selective coordination during fault conditions, instantaneous protection provides rapid interruption of severe short circuits, and ground-fault protection helps protect the installation against earth-fault currents. Its fixed three-pole construction and rear horizontal terminals enable integration into high-capacity low-voltage switchgear assemblies.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• High-current switchgear assemblies.
• Transformer and generator protection.
• Manufacturing and process plants.
• Commercial and infrastructure electrical distribution.
• Critical power systems requiring comprehensive LSIG protection.
• High-fault-level installations requiring substantial short-circuit breaking capacity.