1SDA057573R1 ABB E3H-A 1200 PR122/P-LI 1200 A 3-Pole Air Circuit Breaker

Why Choose the ABB E3H-A 1200 PR122/P-LI 1SDA057573R1 Air Circuit Breaker?

The ABB E3H-A 1200 PR122/P-LI, order code 1SDA057573R1, is a high-performance three-pole air circuit breaker moving part from the ABB SACE New Emax range, designed for protection and switching in demanding low-voltage electrical distribution systems. Rated at 1200 A, this E3H-A breaker configuration combines robust Emax construction with the advanced PR122/P-LI electronic overcurrent release.

Designed as the withdrawable moving part of an Emax circuit breaker installation, the E3H-A 1200 provides convenient isolation, inspection and maintenance within compatible switchgear. Its PR122/P electronic trip unit provides configurable protection and monitoring capabilities, while the LI configuration provides long-time overload and instantaneous short-circuit protection.

This three-pole 1200 A configuration is supplied with a PR122/P-LI R1200 overcurrent release and is intended for use with compatible ABB Emax withdrawable installations. The breaker is also equipped with auxiliary contacts and open/closed position indication, supporting integration into industrial power distribution and switchboard control systems.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker for low-voltage power distribution.
• 1200 A rated current for high-current industrial and commercial installations.
• Three-pole configuration for three-phase electrical distribution systems.
• Advanced PR122/P-LI electronic overcurrent release.
• LI protection functions provide long-time overload and instantaneous short-circuit protection.
• Withdrawable moving-part design supports straightforward isolation and maintenance.
• Auxiliary contacts facilitate status signalling and integration with switchgear control systems.

Key Features

• ABB SACE New Emax E3H-A circuit breaker platform.
• 1200 A rated current.
• Three-pole configuration.
• PR122/P-LI electronic trip unit.
• R1200 current rating configuration.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• Withdrawable moving-part (W MP) construction.
• Fitted with four auxiliary contacts.
• Open/closed breaker position indication.
• Designed for low-voltage power distribution and switchgear applications.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E3H-A protect high-current electrical distribution systems against damaging overload and short-circuit conditions. The breaker can interrupt the electrical supply when its electronic protection release detects operating conditions outside the configured protection thresholds, helping protect cables, switchgear and connected equipment.

The PR122/P-LI electronic release combines long-time overload protection with instantaneous short-circuit protection. Together with the withdrawable Emax construction, this makes the 1SDA057573R1 particularly suitable for switchboards where dependable circuit protection, maintainability and clear breaker status indication are important.

Typical Applications

• Industrial low-voltage power distribution systems.
• Main and distribution switchboards.
• Industrial plants and manufacturing facilities.
• Commercial building electrical distribution.
• Power distribution centres and switchgear assemblies.
• Infrastructure and utility electrical installations.