1SDA057943R1 ABB E4V-A 3200 PR121/P-LI 3200 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E4V-A 3200 PR121/P-LI Air Circuit Breaker?

The ABB E4V-A 3200 PR121/P-LI, order code 1SDA057943R1, 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 E4V-A series, this three-pole fixed circuit breaker combines a 3200 A rated current with the PR121/P-LI electronic overcurrent release.

The PR121/P-LI trip unit provides long-time and instantaneous protection, helping protect electrical installations against sustained overloads and high-level short-circuit conditions. The E4V-A platform is designed for demanding high-current applications where robust circuit interruption and reliable electronic protection are required.

With a rated current of 3200 A, a three-pole fixed configuration and rear horizontal terminals, the 1SDA057943R1 is designed for integration into compatible low-voltage switchboards. The circuit breaker incorporates an R3200 rating plug, an Im 48,000 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.
• 3200 A rated current for demanding industrial and commercial applications.
• PR121/P-LI electronic overcurrent release for dependable circuit protection.
• LI protection provides long-time overload and instantaneous short-circuit protection.
• Three-pole fixed configuration for three-phase electrical distribution systems.
• R3200 rating plug matched to the 3200 A rated current.
• Rear horizontal terminals support integration into compatible low-voltage switchboards.
• Four auxiliary contacts and open/closed position indication support monitoring and control.

Key Features

• ABB SACE Emax E4V-A series.
• 3200 A rated current.
• Three-pole configuration.
• Fixed circuit-breaker construction.
• Rear horizontal terminals.
• PR121/P-LI electronic overcurrent release.
• R3200 rating plug.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• Im 48,000 A instantaneous protection designation.
• 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 E4V-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 dependable interruption of overload and short-circuit currents is essential for protecting electrical equipment and maintaining system availability.

The PR121/P-LI electronic release combines two fundamental protection functions. Long-time protection responds to sustained overload conditions, while instantaneous protection provides rapid operation during severe short-circuit events. Combined with the E4V-A frame, fixed construction and rear horizontal terminals, these functions make the 1SDA057943R1 suitable for demanding high-current 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 LI protection.