1SDA059259R1 ABB E2N1000 PR121/P-LI 1000A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E2N1000 PR121/P-LI 1000A 4-Pole Fixed Air Circuit Breaker?

The ABB E2N1000 PR121/P-LI, order code 1SDA059259R1, is a robust 1000 A four-pole fixed air circuit breaker designed for switching and protecting high-current low-voltage power distribution systems. As part of the proven ABB SACE Emax E2N series, it combines dependable switching performance with electronic overcurrent protection for industrial, commercial and infrastructure switchgear.

This Emax circuit breaker is equipped with the PR121/P-LI R1000 electronic trip unit, providing long-time overload (L) and instantaneous short-circuit (I) protection. Its adjustable protection settings allow the breaker to protect distribution circuits against sustained overloads and severe short-circuit faults while supporting coordination with other protective devices.

With a rated uninterrupted current of 1000 A and a rated voltage of 690 V AC, the E2N1000 is suitable for demanding low-voltage distribution applications. This model uses a four-pole fixed construction with rear horizontal terminals and includes four change-over auxiliary contacts plus circuit-breaker open/closed position indication for integration into electrical switchboards.

Key Advantages

• Heavy-duty 1000 A air circuit breaker for low-voltage power distribution.
• Four-pole configuration for switching and protecting three-phase systems with neutral.
• PR121/P-LI R1000 electronic trip unit provides overload and instantaneous short-circuit protection.
• 65 kA rated short-circuit breaking capacity at 400 V AC for demanding fault conditions.
• Adjustable 400–1000 A overload release setting for application-specific protection.
• Fixed construction with rear horizontal terminals for permanent switchboard installation.
• Four change-over auxiliary contacts and open/closed position indication.
• Part of the established ABB SACE Emax air circuit breaker platform.

Key Features

• ABB SACE Emax E2N air circuit breaker.
• 1000 A rated uninterrupted current.
• Four-pole construction.
• PR121/P-LI R1000 electronic overcurrent release.
• Long-time overload protection (L).
• Instantaneous short-circuit protection (I).
• Fixed version with rear horizontal terminals (F HR).
• 690 V AC rated voltage.
• 65 kA Icu at 400 V AC, 50 Hz.
• Four change-over auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Optional motor drive capability for automated operation.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E2N are designed to switch and protect high-current low-voltage distribution circuits. The electronic trip unit monitors circuit current and initiates breaker operation when configured protection thresholds are exceeded, helping safeguard cables, busbars, switchgear and connected equipment against damaging overload and short-circuit conditions.

The PR121/P-LI release provides essential long-time and instantaneous protection, while the E2N platform delivers substantial short-circuit interruption capability. Combined with its four-pole fixed construction and rear horizontal terminals, the E2N1000 is well suited to permanent switchboard installations where dependable high-current protection and neutral switching are required.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical distribution.
• Manufacturing and process plant switchgear.
• Three-phase four-wire distribution systems.
• Transformer and feeder protection.
• Infrastructure and utility installations.
• Protection of busbars and high-current distribution circuits.