1SDA059392R1 ABB E3S1000 PR121/P-LSI 1000 A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA059392R1 E3S1000 Air Circuit Breaker?

The ABB 1SDA059392R1 is a high-performance SACE Emax E3S 1000 A four-pole air circuit breaker moving part designed for switching and overcurrent protection 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-LSI electronic overcurrent release for industrial, commercial and infrastructure power applications.

The E3S1000 is equipped with an ABB PR121/P-LSI electronic trip unit, providing long-time, short-time and instantaneous protection functions. The LSI protection package helps protect cables, busbars, switchgear and connected equipment against overload and short-circuit conditions, with an overload adjustment range of 400–1000 A, short-time delayed short-circuit adjustment of 1000–10000 A and instantaneous adjustment of 1500–15000 A.

This model features a four-pole withdrawable moving-part (W MP) configuration for use with the corresponding SACE Emax fixed part. The E3S platform provides rated service and ultimate short-circuit breaking capacities of 75 kA across 220–690 V AC, while four auxiliary contacts and open/closed position indication support integration with switchboard control and signalling systems.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker for demanding low-voltage power distribution.
• 1000 A rated uninterrupted current for industrial, commercial and infrastructure installations.
• Four-pole configuration for switching and protection of four conductors.
• PR121/P-LSI electronic release provides long-time, short-time and instantaneous protection.
• 75 kA rated service and ultimate short-circuit breaking capacity across 220–690 V AC.
• 75 kA rated short-time withstand current for 1 s.
• Withdrawable moving-part design supports efficient inspection, servicing and replacement.
• Four auxiliary contacts and open/closed indication support control and status signalling.

Key Features

• ABB SACE Emax E3S series.
• 1000 A rated uninterrupted current.
• Four-pole air circuit breaker.
• PR121/P-LSI R1000 electronic overcurrent release.
• LSI protection functions: long-time, short-time and instantaneous.
• 690 V rated voltage.
• 75 kA rated service short-circuit breaking capacity across 220–690 V AC.
• 75 kA rated ultimate short-circuit breaking capacity across 220–690 V AC.
• 75 kA short-time withstand current for 1 s.
• 65 kA short-time withstand current for 3 s.
• Withdrawable (W) execution supplied as the moving part.
• Four auxiliary contacts with open/closed position indication.
• Optional motor operating mechanism capability.

High-Performance Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E3S protect low-voltage electrical distribution systems against potentially damaging overload and short-circuit 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-LSI release combines long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection with the high fault-interruption capability of the E3S platform. Together with its 75 kA short-time withstand current for 1 s and four-pole withdrawable construction, the 1SDA059392R1 is well suited to critical distribution systems requiring adjustable electronic protection and maintainable high-current 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 with high prospective short-circuit currents requiring withdrawable circuit breakers.