1SDA059231R1 ABB E1N1000 PR122/P-LSI 1000A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E1N1000 PR122/P-LSI 1000A 4-Pole Fixed Air Circuit Breaker?

The ABB E1N1000 PR122/P-LSI, order code 1SDA059231R1, is a high-performance 1000 A four-pole fixed air circuit breaker designed for switching and protecting low-voltage power distribution systems. As part of the proven ABB SACE Emax E1N series, it combines robust high-current switching with advanced electronic overcurrent protection for industrial, commercial and infrastructure installations.

This Emax circuit breaker is equipped with the PR122/P-LSI electronic trip unit, providing long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection. The electronic release supports effective protection coordination while helping safeguard cables, busbars, switchgear and connected equipment against overloads and short-circuit faults.

With a rated current of 1000 A and rated operational voltage of 690 V AC, the E1N1000 is engineered for demanding low-voltage distribution applications. This model uses a four-pole fixed configuration with rear horizontal terminals and is supplied with four 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.
• PR122/P-LSI electronic trip unit provides comprehensive LSI overcurrent protection.
• Long-time, short-time and instantaneous protection supports effective distribution-system coordination.
• 50 kA ultimate and service short-circuit breaking capacity across the specified operating-voltage range.
• Fixed construction with rear horizontal terminals for permanent switchboard installation.
• Four auxiliary contacts and open/closed breaker position indication.
• Part of the established ABB SACE Emax air circuit breaker platform.

Key Features

• ABB SACE Emax E1N air circuit breaker.
• 1000 A rated current.
• Four-pole construction.
• PR122/P-LSI electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Fixed version with rear horizontal terminals.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 50 kA rated short-time withstand current for 1 s.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E1N are designed to switch and protect high-current low-voltage distribution circuits. The electronic trip unit monitors circuit conditions and initiates breaker operation when configured protection thresholds are exceeded, helping protect cables, busbars, transformers, switchgear and connected equipment against overload and short-circuit faults.

The PR122/P-LSI release provides long-time, short-time and instantaneous protection functions for effective distribution-system coordination. Combined with the four-pole fixed E1N construction, rear horizontal terminals and high short-circuit capability, the E1N1000 is well suited to main and feeder protection in demanding industrial and commercial switchboards.

Typical Applications

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