1SDA059224R1 ABB E1N1000 PR121/P-LSIG 1000 A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA059224R1 E1N1000 Air Circuit Breaker?

The ABB 1SDA059224R1 is a high-performance SACE Emax E1N 1000 A four-pole air circuit breaker moving part designed for dependable protection and switching in low-voltage electrical distribution systems. Part of the ABB New Emax product family, it combines a 1000 A current rating with the PR121/P-LSIG electronic overcurrent release for comprehensive protection of industrial and commercial power systems.

The E1N1000 is equipped with an ABB PR121/P-LSIG electronic trip unit, providing long-time, short-time, instantaneous and earth-fault protection functions. Its N short-circuit performance level provides a rated ultimate and service short-circuit breaking capacity of 50 kA at up to 690 V AC, making it suitable for demanding distribution applications.

This model features a four-pole withdrawable moving-part (W MP) configuration and is fitted with four auxiliary contacts plus circuit breaker open/closed position indication. The withdrawable construction supports efficient inspection, maintenance and replacement when installed with the appropriate SACE Emax fixed part.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker for low-voltage power distribution.
• 1000 A rated current for demanding industrial and commercial installations.
• Four-pole configuration for switching and protection of four conductors.
• PR121/P-LSIG electronic release provides comprehensive overcurrent and earth-fault protection.
• 50 kA rated service and ultimate short-circuit breaking capacity at up to 690 V AC.
• Withdrawable moving-part design supports convenient servicing and switchboard maintenance.
• Four auxiliary contacts and open/closed position indication support control and status monitoring.

Key Features

• ABB SACE Emax E1N series.
• 1000 A rated current.
• Four-pole air circuit breaker.
• PR121/P-LSIG electronic overcurrent release.
• LSIG protection functions: long-time, short-time, instantaneous and earth-fault.
• 690 V AC rated operational voltage.
• 50 kA rated service short-circuit breaking capacity.
• 50 kA rated ultimate short-circuit breaking capacity.
• 50 kA short-time withstand current for 1 s.
• Withdrawable (W) moving part (MP) configuration.
• Four auxiliary contacts and circuit breaker open/closed position indication.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E1N protect low-voltage electrical distribution systems against overload, short-circuit and earth-fault conditions. The electronic trip unit continuously monitors the electrical circuit and initiates breaker operation when configured protection thresholds are exceeded, helping protect cables, busbars, switchgear and connected equipment.

The PR121/P-LSIG release provides four principal protection functions, combining long-time overload protection with short-time, instantaneous and earth-fault protection. Together with the E1N breaker’s 50 kA short-circuit breaking capacity and withdrawable construction, this provides a versatile solution for critical industrial and commercial power distribution systems.

Typical Applications

• Industrial low-voltage switchboards.
• Main incoming and distribution circuits.
• Three-phase and four-wire distribution systems.
• Manufacturing and process facilities.
• Commercial building power distribution.
• Electrical distribution panels and assemblies.
• Infrastructure and utility installations.
• Systems requiring withdrawable high-current circuit breakers.