1SDA059312R1 ABB E2S1000 PR121/P-LSIG 1000 A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA059312R1 E2S1000 Air Circuit Breaker?

The ABB 1SDA059312R1 is a high-performance SACE Emax E2S 1000 A four-pole air circuit breaker moving part designed for comprehensive protection and switching in demanding low-voltage electrical distribution systems. Part of the ABB New Emax product family, it combines a 1000 A rated current with the PR121/P-LSIG electronic overcurrent release for industrial, commercial and infrastructure power applications.

The E2S1000 is equipped with an ABB PR121/P-LSIG electronic trip unit, providing long-time, short-time, instantaneous and earth-fault protection functions. This LSIG protection package helps protect cables, busbars, switchgear and connected equipment against overload, short-circuit and earth-fault conditions while supporting coordinated protection within low-voltage distribution networks.

This model features a four-pole withdrawable moving-part (W MP) configuration for use with the corresponding SACE Emax fixed part. It is supplied with four auxiliary contacts and circuit breaker open/closed position indication, supporting integration with switchboard control and signalling systems while the withdrawable design facilitates inspection, maintenance and replacement.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker for demanding low-voltage power distribution.
• 1000 A rated current for 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.
• LSIG protection covers long-time, short-time, instantaneous and earth-fault conditions.
• Withdrawable moving-part design supports efficient maintenance, inspection and replacement.
• Four auxiliary contacts support circuit breaker control and status signalling.
• Open/closed position indication provides clear operating status information.

Key Features

• ABB SACE Emax E2S 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.
• Withdrawable (W) execution.
• Moving part (MP) for the corresponding SACE Emax fixed part.
• Four auxiliary contacts for status and control signalling.
• Integrated circuit breaker open/closed position indication.
• Designed for demanding low-voltage industrial and commercial distribution systems.

Advanced Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E2S protect low-voltage electrical distribution systems against potentially damaging overload, short-circuit and earth-fault conditions. The electronic trip unit monitors circuit current and initiates breaker operation when configured protection thresholds are exceeded, helping safeguard cables, busbars, switchgear and connected electrical equipment.

The PR121/P-LSIG release combines long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. Together with the high-performance E2S platform and withdrawable four-pole construction, this makes the 1SDA059312R1 particularly suitable for critical power distribution systems requiring comprehensive electronic protection and maintainable switchgear.

Typical Applications

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