1SDA060921R1 ABB E1N-A 800 PR121/P-LSI 800 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E1N-A 800 PR121/P-LSI 1SDA060921R1 Air Circuit Breaker?

The ABB E1N-A 800 PR121/P-LSI, order code 1SDA060921R1, is a robust SACE Emax air circuit breaker (ACB) moving part designed for protection and switching in low-voltage electrical distribution systems. As part of the ABB New Emax E1 series, it combines an 800 A rated current with electronic protection and a withdrawable construction suited to industrial, commercial and infrastructure power distribution.

This three-pole breaker is equipped with an ABB PR121/P-LSI electronic overcurrent release, providing long-time, short-time and instantaneous protection functions. These LSI functions help protect electrical installations against sustained overloads and short-circuit conditions while supporting coordinated protection within low-voltage distribution networks.

With a rated current of 800 A and a three-pole withdrawable configuration, the E1N-A 800 is designed as the moving part of a compatible SACE Emax draw-out circuit breaker installation. Its withdrawable construction facilitates isolation, inspection and maintenance within electrical switchgear, making it suitable for important incoming, feeder and distribution circuits where serviceability and dependable electronic protection are required.

Key Advantages

• Robust ABB SACE Emax air circuit breaker moving part for low-voltage power distribution.
• 800 A rated current suitable for industrial and commercial electrical loads.
• Advanced PR121/P-LSI electronic overcurrent release for comprehensive circuit protection.
• LSI functionality provides long-time, short-time and instantaneous protection.
• Three-pole withdrawable construction supports convenient isolation, inspection and maintenance.
• Designed for integration into compatible ABB SACE Emax draw-out switchgear installations.

Key Features

• ABB SACE Emax E1N-A series.
• 800 A rated current.
• Three-pole configuration.
• Withdrawable moving-part version.
• PR121/P-LSI electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Electronic trip technology for accurate circuit protection.
• Withdrawable construction for serviceable low-voltage switchgear installations.

Reliable Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E1N-A provide switching and protection for high-current low-voltage distribution circuits. By combining a robust circuit-breaking mechanism with an electronic protection release, the breaker can detect abnormal electrical conditions and disconnect the affected circuit to help protect conductors, switchgear and connected equipment.

The PR121/P-LSI trip unit provides long-time protection against sustained overloads, short-time protection for coordinated response to short-circuit conditions and instantaneous protection against severe fault currents. Combined with the withdrawable E1N-A construction, these functions provide a practical solution for distribution systems requiring electronic overcurrent protection together with convenient circuit-breaker isolation and maintenance.

Typical Applications

• Industrial low-voltage switchboards and distribution systems.
• Main incoming circuit protection.
• Electrical feeder protection.
• Power distribution in manufacturing facilities.
• Commercial and infrastructure electrical installations.
• Industrial plant power distribution.
• Draw-out switchgear requiring electronic LSI protection.