1SDA055921R1 ABB E2N2000 2000 A 3-Pole Air Circuit Breaker

Why Choose the ABB E2N2000 1SDA055921R1 Air Circuit Breaker?

The ABB E2N2000 1SDA055921R1 is a high-performance SACE Emax air circuit breaker (ACB) designed for protection and switching of high-current low-voltage electrical distribution systems. Part of the proven ABB Emax E2 series, this fixed three-pole circuit breaker combines a 2000 A rated current with the electronic PR121/P-LSI trip unit for dependable overload, short-time and instantaneous short-circuit protection.

Designed for demanding industrial and commercial power distribution applications, the E2N2000 provides reliable circuit protection while supporting selective coordination within low-voltage switchboards. Its electronic PR121/P-LSI release provides L, S and I protection functions, allowing the breaker to respond appropriately to overload and short-circuit conditions without integrated earth-fault protection.

This model is a three-pole fixed circuit breaker with horizontal rear terminals and a rated operational voltage of up to 690 V AC. The E2N performance level provides a rated ultimate short-circuit breaking capacity of 65 kA at 415 V AC, making it suitable for substantial industrial distribution systems where high fault-current interruption capability is required.

Key Advantages

• High-current 2000 A air circuit breaker for low-voltage power distribution.
• PR121/P-LSI electronic trip unit provides overload, short-time and instantaneous protection.
• 65 kA breaking capacity at 415 V AC for demanding fault conditions.
• Three-pole fixed configuration for permanent switchboard installation.
• Rated operational voltage up to 690 V AC.
• Horizontal rear terminals support practical integration into power distribution assemblies.

Key Features

• ABB SACE Emax E2N2000 air circuit breaker.
• 2000 A rated current.
• 3-pole configuration.
• PR121/P-LSI electronic release.
• LSI protection functions: long-time, short-time and instantaneous.
• Fixed (F) circuit-breaker execution.
• Horizontal rear (HR) main terminals.
• 65 kA Icu at 415 V AC.
• 55 kA Icw for 1 second.
• Rated insulation voltage of 1000 V.
• Rated impulse withstand voltage of 12 kV.

Reliable Protection for High-Current Distribution Systems

Air circuit breakers such as the ABB E2N2000 provide switching, isolation and protection at the main and distribution levels of low-voltage electrical installations. Their high current ratings and substantial short-circuit interruption capability make them particularly suitable for switchboards supplying industrial machinery, infrastructure and large commercial loads.

The PR121/P-LSI electronic trip unit continuously supports protection against overload and short-circuit conditions through its long-time, short-time and instantaneous functions. Combined with the Emax platform's robust construction, this provides dependable protection for critical low-voltage distribution equipment.

Typical Applications

• Main low-voltage switchboards and distribution boards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Transformer secondary and feeder protection.
• High-current machinery and production systems.