1SDA057621R1 ABB E3H-A 1600 PR123/P-LSIG 1600 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB 1SDA057621R1 E3H-A 1600 Air Circuit Breaker?

The ABB 1SDA057621R1 is a high-performance SACE Emax E3H-A 1600 air circuit breaker moving part designed for reliable switching and comprehensive protection in demanding low-voltage power distribution systems. As part of the established ABB SACE Emax series, this three-pole withdrawable circuit breaker incorporates a PR123/P-LSIG electronic overcurrent release for advanced protection of high-current industrial electrical networks.

The PR123/P-LSIG R1600 electronic release provides long-time, short-time, instantaneous and ground-fault protection functions. This LSIG protection combination helps protect electrical distribution equipment against overload, short-circuit and ground-fault conditions, making the E3H-A particularly suitable for important distribution circuits where advanced protection and dependable system operation are required.

With a rated current of 1600 A, a three-pole configuration and an instantaneous setting of 24000 A, the 1SDA057621R1 is designed for high-current three-phase power distribution. Its withdrawable moving-part construction supports efficient servicing and replacement within compatible SACE Emax switchgear installations.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker for industrial power distribution.
• 1600 A rated current for high-current electrical systems.
• Three-pole configuration for three-phase power distribution.
• Advanced PR123/P-LSIG electronic overcurrent release.
• LSIG protection provides long-time, short-time, instantaneous and ground-fault protection.
• 24000 A instantaneous setting for high-level fault protection.
• Withdrawable moving-part construction supports efficient switchboard servicing and maintenance.
• Four auxiliary contacts support circuit-breaker status signalling and control.
• Open/closed position indication enables straightforward circuit-breaker status monitoring.

Key Features

• ABB SACE Emax E3H-A 1600 series.
• 1600 A rated current.
• PR123/P-LSIG R1600 electronic overcurrent release.
• LSIG protection functions: long-time, short-time, instantaneous and ground fault.
• 24000 A instantaneous setting.
• Three-pole circuit-breaker configuration.
• Withdrawable moving part for compatible SACE Emax switchgear.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• E3H-A high-performance circuit-breaker configuration.
• UL configuration.
• ABB order code 1SDA057621R1.

Advanced Circuit Protection for Industrial Power Distribution

Air circuit breakers such as the ABB SACE Emax provide switching and overcurrent protection for high-current low-voltage electrical distribution systems. They help protect cables, busbars, switchgear and connected equipment against damaging electrical faults while providing dependable circuit switching and isolation within industrial power networks.

The PR123/P-LSIG electronic release extends protection beyond conventional overload and short-circuit functions by incorporating ground-fault protection. Combined with the high-performance E3H-A platform and withdrawable construction, the 1SDA057621R1 provides a practical solution for industrial switchboards where comprehensive fault protection, operational reliability and maintainability are key requirements.

Typical Applications

• Industrial low-voltage power distribution systems.
• Main incomer and feeder protection in electrical switchboards.
• Manufacturing and process plant electrical distribution.
• Commercial and industrial switchgear assemblies.
• High-current three-phase distribution circuits.
• Power distribution centres and critical electrical infrastructure.
• Applications requiring ground-fault as well as overcurrent protection.