1SDA056563R1 ABB E3V 1250 PR122/P-LI 1250 A Air Circuit Breaker

Why Choose the ABB 1SDA056563R1 E3V 1250 Air Circuit Breaker?

The ABB 1SDA056563R1 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-LI, this three-pole fixed circuit breaker combines a rated uninterrupted 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, reliable operation and adjustable electronic protection. The PR122/P-LI release provides long-time overload and instantaneous short-circuit protection, helping safeguard switchboards, busbars, cables and connected equipment against damaging overcurrent conditions.

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 220–440 V AC and 100 kA at 500–690 V AC, making it 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.
• 1250 A rated uninterrupted current for industrial and commercial power distribution.
• PR122/P-LI electronic trip unit providing adjustable overload and instantaneous short-circuit protection.
• High 130 kA ultimate short-circuit breaking capacity at 220–440 V AC.
• LI protection provides long-time overload and instantaneous short-circuit protection.
• 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 1250 series.
• 1250 A rated uninterrupted current.
• Three-pole configuration.
• Fixed circuit breaker construction.
• Horizontal rear terminals.
• PR122/P-LI R1250 electronic overcurrent release.
• LI protection functions for long-time overload and instantaneous short-circuit 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.
• 20,000-cycle mechanical durability.

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 PR122/P-LI electronic trip unit provides long-time overload and instantaneous short-circuit protection with adjustable current settings. Combined with the E3V's high breaking capacity and fixed switchboard construction, this makes the 1SDA056563R1 suitable for critical distribution circuits requiring dependable high-current protection.

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 adjustable electronic overcurrent protection.