1SDA061081R1 ABB E2H-A 800 PR121/P-LSI 800 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E2H-A 800 PR121/P-LSI 1SDA061081R1 Air Circuit Breaker?

The ABB E2H-A 800 PR121/P-LSI, order code 1SDA061081R1, is a high-performance SACE Emax air circuit breaker (ACB) moving part designed for protection and switching in demanding low-voltage electrical distribution systems. As part of the ABB New Emax E2 series, it combines an 800 A rated current with electronic overcurrent protection and a withdrawable construction for industrial, commercial and infrastructure power-distribution applications.

This three-pole breaker is equipped with an ABB PR121/P-LSI R800 electronic overcurrent release, providing long-time, short-time and instantaneous protection functions. These LSI functions help safeguard electrical installations against sustained overloads and short-circuit conditions while supporting coordinated protection across low-voltage distribution networks.

With a rated current of 800 A and a three-pole withdrawable configuration, the E2H-A 800 is supplied as the moving part for a compatible SACE Emax draw-out circuit breaker installation. Its high-performance E2H-A construction, electronic LSI protection and withdrawable design make it particularly suitable for important incoming, feeder and distribution circuits where high fault-current capability and convenient maintenance are required.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker moving part for demanding low-voltage distribution systems.
• 800 A rated current for substantial industrial and commercial electrical loads.
• E2H-A high-performance construction for installations with demanding short-circuit protection requirements.
• Advanced PR121/P-LSI R800 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.

Key Features

• ABB SACE Emax E2H-A series.
• 800 A rated current.
• Three-pole configuration.
• Withdrawable / draw-out moving-part version.
• PR121/P-LSI R800 electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• 12,000 A instantaneous setting designation.
• Fitted with four auxiliary contacts.
• Open / closed circuit-breaker position indication.
• UL configuration for compatible low-voltage power-distribution systems.

Advanced Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E2H-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 R800 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 high-performance E2H-A frame and withdrawable construction, these functions provide dependable protection together with convenient circuit-breaker isolation and maintenance.

Typical Applications

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