1SDA059386R1 ABB E3S1000 PR121/P-LI 1000 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA059386R1 E3S1000 Air Circuit Breaker?

The ABB 1SDA059386R1 is a high-performance SACE Emax E3S air circuit breaker (ACB) designed for reliable protection, switching and isolation in low-voltage electrical distribution systems. Identified by ABB as E3S1000PR121/P-LIIn=1000A3pWM, this three-pole withdrawable circuit breaker moving part combines a 1000 A rated current with the PR121/P-LI electronic overcurrent release.

As part of the ABB New Emax product family, the E3S1000 is intended for demanding industrial, commercial and infrastructure power distribution applications. The PR121/P-LI trip unit provides long-time overload and instantaneous short-circuit protection, helping protect distribution circuits and connected equipment against damaging overcurrent conditions.

The 1SDA059386R1 is supplied as a three-pole withdrawable moving part for use with a compatible ABB SACE Emax fixed part. It is fitted with four auxiliary contacts and circuit-breaker open/closed position indication, supporting status monitoring and integration into switchboard control and signalling systems.

Key Advantages

• Heavy-duty ABB SACE Emax E3S air circuit breaker for low-voltage power distribution.
• 1000 A rated current for high-current electrical installations.
• Three-pole configuration for three-phase distribution systems.
• Withdrawable moving-part design for convenient isolation, inspection and maintenance.
• PR121/P-LI electronic overcurrent release for dependable circuit protection.
• Provides long-time overload and instantaneous short-circuit protection.
• Fitted with four auxiliary contacts for signalling and control integration.
• Open/closed circuit-breaker position indication supports switchboard monitoring.

Key Features

• ABB SACE New Emax E3S series.
• 1000 A rated current.
• Three-pole construction.
• Withdrawable version.
• Supplied as the moving part (MP).
• PR121/P electronic trip unit.
• LI protection functions: long-time overload and instantaneous short-circuit protection.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Designed for integration with compatible ABB SACE Emax withdrawable switchgear.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E3S are designed to protect high-current low-voltage distribution systems against overload and short-circuit conditions. Their robust switching mechanism and electronic protection technology make them suitable for important incoming and feeder circuits within industrial and commercial electrical installations.

The PR121/P-LI electronic release provides long-time overload and instantaneous short-circuit protection. Combined with the withdrawable construction of the 1SDA059386R1, this provides a practical solution for switchboards where dependable electrical protection, straightforward isolation and serviceability are important.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical infrastructure.
• Manufacturing and process plants.
• Transformer secondary distribution systems.
• Generator distribution systems.
• Main incomer and high-current feeder applications.
• Withdrawable switchgear requiring serviceable circuit-breaker assemblies.