1SDA057915R1 ABB E4H-A 3600 PR121/P-LSI 3600 A 3-Pole Air Circuit Breaker

Why Choose the ABB E4H-A 3600 PR121/P-LSI Air Circuit Breaker?

The ABB E4H-A 3600 PR121/P-LSI, order code 1SDA057915R1, is a high-performance SACE Emax air circuit breaker designed for protection and switching in demanding low-voltage electrical distribution systems. As part of the ABB SACE Emax E4H-A series, this three-pole fixed circuit breaker combines a 3600 A rated current with the PR121/P-LSI electronic overcurrent release.

The PR121/P-LSI trip unit provides comprehensive long-time, short-time and instantaneous protection, helping protect electrical installations against overload and short-circuit conditions. The E4H-A platform is designed for demanding high-current applications where reliable switching, advanced electronic protection and robust performance are required.

With a rated current of 3600 A, a three-pole fixed configuration and rear horizontal terminals, the 1SDA057915R1 is designed for integration into compatible low-voltage switchboards. The circuit breaker incorporates an R3600 rating plug, an Im 54,000 A instantaneous protection designation, four auxiliary contacts and circuit-breaker open/closed position indication.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker for high-current low-voltage distribution.
• 3600 A rated current for demanding industrial and commercial applications.
• Advanced PR121/P-LSI electronic overcurrent release.
• LSI protection provides long-time, short-time and instantaneous protection.
• Three-pole fixed configuration for three-phase electrical distribution systems.
• R3600 rating plug matched to the 3600 A rated current.
• Rear horizontal terminals support integration into low-voltage switchboards.
• Four auxiliary contacts and open/closed position indication support monitoring and control.

Key Features

• ABB SACE Emax E4H-A series.
• 3600 A rated current.
• Three-pole configuration.
• Fixed circuit-breaker construction.
• PR121/P-LSI electronic overcurrent release.
• R3600 rating plug.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Im 54,000 A instantaneous protection designation.
• Rear horizontal terminals.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• UL configuration for low-voltage power distribution applications.

High-Performance Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E4H-A provide switching and overcurrent protection for high-capacity low-voltage distribution circuits. They are commonly installed in main switchboards and industrial distribution assemblies where reliable interruption of overload and short-circuit currents is essential for protecting electrical equipment and maintaining system availability.

The PR121/P-LSI electronic release combines three key protection functions within the circuit breaker. Long-time protection responds to sustained overload conditions, while short-time and instantaneous functions provide protection against short circuits. Combined with the high-performance E4H-A frame and fixed rear-terminal construction, these functions make the 1SDA057915R1 well suited to demanding electrical distribution installations.

Typical Applications

• Main low-voltage electrical switchboards.
• High-current industrial power distribution systems.
• Manufacturing and process facilities.
• Commercial building electrical infrastructure.
• Power generation and utility distribution equipment.
• Motor control centres and plant distribution systems.
• High-capacity feeders requiring electronic LSI protection.