1SDA056529R1 ABB E3V 800 PR121/P-LSI 800 A Air Circuit Breaker

Why Choose the ABB 1SDA056529R1 E3V 800 Air Circuit Breaker?

The ABB 1SDA056529R1 is a high-performance SACE Emax E3V air circuit breaker (ACB) designed for protection and switching in demanding low-voltage electrical distribution systems. Configured as an E3V 800 PR121/P-LSI, this three-pole fixed circuit breaker combines a rated uninterrupted current of 800 A with ABB's PR121/P electronic overcurrent release.

As part of the ABB SACE Emax series, the E3V 800 is engineered for applications requiring high short-circuit performance, reliable operation and adjustable electronic protection. The PR121/P-LSI release provides long-time, short-time and instantaneous protection functions, helping protect electrical installations against overloads and short circuits while supporting selective coordination within the distribution system.

This configuration is a three-pole fixed circuit breaker with horizontal rear terminals and a rated operational voltage of 690 V AC. The E3V performance level provides an ultimate short-circuit breaking capacity of 130 kA at 380–440 V AC, making the 1SDA056529R1 particularly suitable for high-fault-level industrial switchboards and critical power distribution systems.

Key Advantages

• High-performance ABB SACE Emax E3V air circuit breaker for demanding low-voltage distribution systems.
• 800 A rated uninterrupted current for industrial and commercial power distribution.
• PR121/P-LSI electronic trip unit providing adjustable overload and short-circuit protection.
• High 130 kA ultimate short-circuit breaking capacity at 380–440 V AC.
• LSI protection provides long-time, short-time and instantaneous protection functions.
• Fixed three-pole construction with horizontal rear terminals for switchboard installation.
• Fitted with four auxiliary change-over contacts and circuit breaker open/closed position indication.

Key Features

• ABB SACE Emax E3V 800 series.
• 800 A rated uninterrupted current.
• Three-pole configuration.
• Fixed circuit breaker construction.
• Horizontal rear terminals.
• PR121/P-LSI electronic overcurrent release.
• LSI protection functions for long-time, short-time and instantaneous protection.
• 690 V AC rated operational voltage.
• 130 kA Icu at 220–440 V AC.
• 100 kA Icu at 500–690 V AC.
• 85 kA short-time withstand current for 1 s.
• Four auxiliary change-over contacts with open/closed position indication.

Reliable Protection for High-Performance Power Distribution

Air circuit breakers such as the ABB SACE Emax E3V provide switching and protection for low-voltage electrical distribution systems where substantial prospective fault currents can occur. The E3V performance level offers high short-circuit interruption capability, helping protect switchboards, busbars, cables and connected equipment against damaging overload and short-circuit conditions.

The PR121/P-LSI electronic trip unit provides long-time overload, short-time selective short-circuit and instantaneous short-circuit protection. Its adjustable protection settings allow the breaker to be coordinated with other protective devices in the electrical installation, while the fixed construction and horizontal rear terminals support straightforward integration into compatible low-voltage switchboards.

Typical Applications

• Main incoming circuit protection in low-voltage switchboards.
• Industrial power distribution systems.
• High-fault-level distribution feeders.
• Manufacturing and process plant electrical systems.
• Commercial and infrastructure power distribution.
• Generator and transformer distribution systems.
• Fixed switchgear requiring selective LSI electronic protection.