1SDA055832R1 ABB E2B 2000 PR121/P-LI 2000 A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E2B 2000 PR121/P-LI Air Circuit Breaker?

The ABB E2B 2000 PR121/P-LI, order code 1SDA055832R1, is a robust 2000 A four-pole fixed air circuit breaker designed for switching and overcurrent protection in low-voltage power distribution systems. As part of the ABB SACE Emax series, this E2B-20 breaker combines high-current switching capability with a PR121/P-LI electronic trip unit for industrial, commercial and infrastructure electrical installations.

The PR121/P-LI electronic overcurrent release provides long-time overload and instantaneous short-circuit protection. This LI protection configuration helps safeguard cables, busbars and connected electrical equipment against sustained overloads and severe short-circuit currents while providing dependable electronic protection for high-current distribution circuits.

With a rated current of 2000 A, a four-pole fixed configuration and horizontal rear terminals, the E2B-20 F PR121/P LI HR 4P is designed for permanent installation in compatible low-voltage switchboards. Its four-pole arrangement supports distribution systems requiring switching and protection across four conductors.

Key Advantages

• Heavy-duty 2000 A air circuit breaker for low-voltage power distribution.
• PR121/P-LI electronic trip unit provides reliable electronic overcurrent protection.
• Includes long-time overload and instantaneous short-circuit protection.
• Four-pole fixed construction for permanent switchboard installation.
• Horizontal rear terminals support practical connection to switchboard busbars.
• ABB SACE Emax construction provides dependable switching for demanding electrical distribution applications.

Key Features

• ABB SACE Emax E2B series.
• 2000 A rated current.
• Four-pole configuration.
• Fixed execution.
• PR121/P-LI electronic overcurrent release.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• Horizontal rear terminal arrangement.
• Designed for high-current low-voltage distribution systems.

Reliable Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB SACE Emax E2B are used for switching and protecting high-current low-voltage distribution circuits. Electronic trip technology monitors current conditions and opens the breaker when configured protection thresholds are exceeded, helping protect conductors and electrical equipment against damaging overcurrents.

The PR121/P-LI release combines long-time overload protection with instantaneous short-circuit protection. Together with the fixed four-pole E2B construction, this makes the 1SDA055832R1 suitable for switchboards requiring straightforward, dependable high-current protection without the additional short-time or earth-fault functions associated with LSI and LSIG trip configurations.

Typical Applications

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