1SDA056568R1 ABB E3V1250 PR121/P-LI 1250 A 4-Pole Air Circuit Breaker

Why Choose the ABB E3V1250 PR121/P-LI 1SDA056568R1 Air Circuit Breaker?

The ABB 1SDA056568R1 is a high-performance SACE Emax E3 V air circuit breaker (ACB) designed for protection and switching of low-voltage electrical distribution systems. As part of the ABB SACE Emax series, this four-pole fixed circuit breaker combines a 1250 A current rating with high short-circuit breaking performance for demanding industrial and commercial power distribution applications.

The E3V1250 is equipped with an ABB PR121/P-LI electronic overcurrent release, providing long-time overload and instantaneous short-circuit protection. Its electronic protection system enables dependable circuit protection while the E3 V performance level provides high breaking capacity for installations where substantial prospective fault currents may occur.

With a rated uninterrupted current of 1250 A, a rated operational voltage of up to 690 V AC and a four-pole fixed configuration, the 1SDA056568R1 is suited to main distribution boards, switchboards and industrial power systems. The breaker features rear horizontal flat terminals for fixed installation and delivers a rated ultimate short-circuit breaking capacity of 130 kA at 400 V AC.

Key Advantages

• High-performance ABB SACE Emax E3 V air circuit breaker for low-voltage power distribution.
• 1250 A rated uninterrupted current for high-current electrical systems.
• Four-pole configuration for switching and protection of three-phase systems with neutral.
• PR121/P-LI electronic release provides long-time overload and instantaneous short-circuit protection.
• High 130 kA ultimate short-circuit breaking capacity at 400 V AC.
• Fixed construction with rear horizontal flat terminals for switchboard installation.

Key Features

• ABB SACE Emax E3 V series.
• 1250 A rated uninterrupted current.
• Four-pole fixed circuit breaker.
• PR121/P-LI electronic overcurrent release.
• Long-time overload and instantaneous short-circuit protection functions.
• 690 V rated voltage.
• 130 kA Icu at 400 V AC.
• 100 kA Ics at 400 V AC.
• Rear horizontal flat terminal arrangement.
• High short-time withstand capability for demanding distribution systems.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E3V1250 provide protection and controlled switching for high-current low-voltage distribution circuits. By combining overload and short-circuit protection with substantial fault-breaking capability, the breaker helps protect switchboards, conductors and connected electrical equipment against damaging overcurrent conditions.

The PR121/P-LI electronic release provides long-time and instantaneous protection functions, while the E3 V breaker platform is engineered for installations requiring particularly high short-circuit performance. Its fixed four-pole construction and rear horizontal connections make it well suited to integration into industrial switchboards and low-voltage distribution assemblies.

Typical Applications

• Main low-voltage electrical distribution boards.
• Industrial switchboards and switchgear assemblies.
• Commercial and infrastructure power distribution systems.
• Manufacturing plants and process facilities.
• Protection of high-current feeders and distribution circuits.
• Electrical installations requiring high short-circuit breaking capacity.