1SDA056064R1 ABB E2L1250 PR121/P-LI 1250 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E2L1250 PR121/P-LI 1SDA056064R1 Air Circuit Breaker?

The ABB 1SDA056064R1 is a high-performance SACE Emax E2L1250 air circuit breaker moving part designed for reliable switching and protection in demanding low-voltage electrical distribution systems. As part of the ABB New Emax product range, this three-pole withdrawable circuit breaker has a rated uninterrupted current of 1250 A and incorporates the PR121/P-LI R1250 electronic overcurrent release.

The PR121/P-LI trip unit provides long-time overload and instantaneous short-circuit protection, helping protect electrical installations, conductors and connected equipment against damaging overcurrents. The E2L performance class offers high short-circuit interruption capability, with this breaker rated for an ultimate short-circuit breaking capacity of 130 kA at 400 V AC.

With a rated voltage of 690 V AC, three-pole configuration and withdrawable W moving-part construction, the E2L1250 is particularly suited to high-current switchboards where maintainability and operational flexibility are important. The moving part is fitted with four auxiliary change-over contacts and open/closed position indication for integration with switchboard control and signalling systems.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker moving part for low-voltage power distribution.
• 1250 A rated uninterrupted current for high-current electrical systems.
• PR121/P-LI electronic release provides overload and instantaneous short-circuit protection.
• 130 kA ultimate short-circuit breaking capacity at 400 V AC.
• Three-pole configuration suitable for three-phase distribution systems.
• Withdrawable moving-part design supports convenient isolation, inspection and maintenance.
• Four auxiliary change-over contacts and open/closed position indication support control and signalling applications.

Key Features

• ABB SACE Emax E2L1250 circuit breaker moving part.
• 1250 A rated uninterrupted current.
• Three-pole configuration.
• PR121/P-LI R1250 electronic overcurrent release.
• L protection: long-time overload protection.
• I protection: instantaneous short-circuit protection.
• 130 kA Icu at 400 V AC, 50 Hz.
• 690 V AC rated voltage.
• Overload release adjustment range of 500–1250 A.
• Instantaneous short-circuit release adjustment range of 1875–18750 A.
• Withdrawable W version for use with a compatible ABB SACE Emax fixed part.
• Fitted with four auxiliary change-over contacts and circuit-breaker open/closed position indication.

High-Performance Protection for Low-Voltage Distribution Systems

Air circuit breakers such as the ABB SACE Emax E2L1250 provide dependable switching and protection for high-current low-voltage distribution circuits. The E2L performance class is designed for installations with demanding prospective fault levels, and the 130 kA ultimate breaking capacity at 400 V AC makes this breaker suitable for electrical systems requiring particularly high short-circuit interruption performance.

The PR121/P-LI electronic release combines adjustable long-time overload protection with instantaneous short-circuit protection. Together with the three-pole E2L1250 platform and withdrawable moving-part construction, these functions make the 1SDA056064R1 well suited to main distribution and feeder applications where high fault performance, reliable protection and straightforward maintenance are important.

Typical Applications

• Industrial low-voltage switchboards.
• Main electrical distribution panels.
• Incoming mains protection.
• High-current feeder protection.
• Manufacturing and process industry electrical systems.
• Commercial and infrastructure power distribution.
• Transformer secondary-side protection.
• High-fault-level three-phase distribution circuits.