1SDA056564R1 ABB E3V 1250 PR122/P-LSI 1250 A Air Circuit Breaker

Why Choose the ABB 1SDA056564R1 E3V 1250 Air Circuit Breaker?

The ABB 1SDA056564R1 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 1250 PR122/P-LSI, this three-pole fixed circuit breaker combines a rated current of 1250 A with ABB's advanced PR122/P electronic overcurrent release.

As part of the ABB SACE Emax series, the E3V 1250 is engineered for installations requiring high short-circuit performance, selective protection and dependable operation. The PR122/P-LSI release provides long-time, short-time and instantaneous protection functions, helping protect electrical installations against overloads and short circuits while enabling effective coordination with other protective devices.

This configuration is a three-pole fixed air circuit breaker designed for installation in low-voltage switchboards. The E3V performance level provides high short-circuit interruption capability, making the 1SDA056564R1 suitable for industrial power distribution, main incomers and critical high-current feeder applications.

Key Advantages

• High-performance ABB SACE Emax E3V air circuit breaker for demanding low-voltage distribution systems.
• 1250 A rated current for industrial and commercial power distribution.
• PR122/P-LSI electronic trip unit providing adjustable overload and short-circuit protection.
• LSI protection provides long-time, short-time and instantaneous protection functions.
• E3V high-breaking-capacity performance for installations with substantial prospective fault currents.
• Three-pole fixed construction for permanent installation in compatible switchboards.
• Electronic protection supports selective coordination across complex electrical distribution systems.

Key Features

• ABB SACE Emax E3V 1250 series.
• 1250 A rated current.
• Three-pole configuration.
• Fixed circuit breaker construction.
• PR122/P-LSI electronic overcurrent release.
• LSI protection functions for long-time overload, short-time short-circuit and instantaneous short-circuit protection.
• High short-circuit breaking performance for demanding power distribution systems.
• Adjustable electronic protection settings for effective system coordination.
• Designed for low-voltage industrial and commercial switchboard applications.

Selective 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 is engineered for high short-circuit duties, helping protect switchboards, busbars, cables and connected equipment against damaging overload and short-circuit conditions.

The PR122/P-LSI electronic trip unit combines long-time overload, short-time selective short-circuit and instantaneous short-circuit protection. These adjustable protection functions allow the breaker to be coordinated with upstream and downstream protective devices, making the 1SDA056564R1 well suited to complex industrial and commercial distribution networks.

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.