1SDA057825R1 ABB E4S-A 3200 PR121/P-LSIG 3200 A 3-Pole Air Circuit Breaker Moving Part

Why Choose the ABB E4S-A 3200 PR121/P-LSIG Air Circuit Breaker?

The ABB E4S-A 3200 PR121/P-LSIG, order code 1SDA057825R1, is a high-performance SACE Emax air circuit breaker moving part designed for protection and switching in demanding low-voltage electrical distribution systems. As part of the ABB SACE Emax E4 series, this three-pole withdrawable unit combines a 3200 A rated current with the PR121/P-LSIG electronic overcurrent release.

The PR121/P-LSIG trip unit provides comprehensive long-time, short-time, instantaneous and ground-fault protection, helping protect electrical installations against overloads, short circuits and earth faults. Its advanced electronic protection and robust Emax construction make the E4S-A suitable for industrial, commercial and infrastructure power distribution applications requiring dependable high-current circuit protection.

With a rated current of 3200 A, a three-pole withdrawable moving-part configuration and an R3200 rating plug, the 1SDA057825R1 is designed for integration into compatible SACE Emax withdrawable switchgear. The unit is fitted with four auxiliary contacts and circuit-breaker open/closed position indication, supporting status monitoring and control within electrical distribution systems.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker moving part for high-current low-voltage distribution.
• 3200 A rated current for demanding industrial and commercial applications.
• Advanced PR121/P-LSIG electronic overcurrent release.
• LSIG protection provides long-time, short-time, instantaneous and ground-fault protection.
• Three-pole configuration for three-phase electrical distribution systems.
• Withdrawable construction supports servicing, maintenance and switchboard flexibility.
• R3200 rating plug matched to the 3200 A current rating.
• Four auxiliary contacts and open/closed position indication support monitoring and control.

Key Features

• ABB SACE Emax E4S-A series.
• 3200 A rated current.
• Three-pole configuration.
• Withdrawable moving-part construction.
• PR121/P-LSIG electronic overcurrent release.
• R3200 rating plug.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Ground-fault protection.
• 48,000 A instantaneous protection designation.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• UL configuration for low-voltage power distribution applications.

Advanced Circuit Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E4S-A provide switching and overcurrent protection for high-capacity low-voltage distribution circuits. They are commonly integrated into 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-LSIG electronic release combines four key protection functions within the circuit breaker. Long-time protection responds to sustained overload conditions, short-time and instantaneous functions provide protection against short circuits, and ground-fault protection helps detect potentially damaging current flowing to earth. The withdrawable Emax construction also facilitates inspection and maintenance within compatible switchgear assemblies.

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 LSIG protection.