1SDA060987R1 ABB E2S-A 1200 PR121/P-LSIG 1200 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E2S-A 1200 PR121/P-LSIG 1SDA060987R1 Air Circuit Breaker?

The ABB E2S-A 1200 PR121/P-LSIG, order code 1SDA060987R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for protection and switching in demanding low-voltage electrical distribution systems. As part of the ABB New Emax E2 series, it combines a 1200 A rated current with advanced electronic protection for industrial, commercial and infrastructure power-distribution applications.

This three-pole circuit breaker is equipped with an ABB PR121/P-LSIG R1200 electronic overcurrent release, providing long-time, short-time, instantaneous and ground-fault protection. These LSIG protection functions help safeguard electrical installations against overloads, short circuits and ground faults while supporting coordinated protection within low-voltage distribution networks.

With a rated current of 1200 A, a three-pole fixed configuration and rear horizontal terminals, the E2S-A 1200 provides a robust solution for permanent installation within electrical switchboards. Its fixed construction, electronic LSIG protection and SACE Emax design make it suitable for important incoming, feeder and distribution circuits.

Key Advantages

• High-performance ABB SACE Emax air circuit breaker for low-voltage power distribution.
• 1200 A rated current suitable for substantial industrial and commercial electrical loads.
• Advanced PR121/P-LSIG R1200 electronic overcurrent release for comprehensive circuit protection.
• LSIG functionality provides long-time, short-time, instantaneous and ground-fault protection.
• Three-pole fixed construction for permanent switchboard installations.
• Rear horizontal terminals support practical integration into compatible low-voltage switchgear.

Key Features

• ABB SACE Emax E2S-A series.
• 1200 A rated current.
• Three-pole configuration.
• Fixed-mounted version.
• Rear horizontal terminals.
• PR121/P-LSIG R1200 electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Ground-fault protection (G).
• 18,000 A instantaneous setting designation.
• Fitted with four auxiliary contacts.
• Open / closed circuit-breaker position indication.

Advanced Circuit Protection for Power Distribution

Air circuit breakers such as the ABB SACE Emax E2S-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-LSIG trip unit provides long-time protection against sustained overloads, short-time and instantaneous protection against short-circuit conditions, and ground-fault protection for additional system safety. This combination makes the E2S-A 1200 suitable for distribution systems requiring comprehensive electronic overcurrent protection and coordinated fault response.

Typical Applications

• Industrial low-voltage switchboards and distribution panels.
• 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.
• Low-voltage switchgear requiring electronic LSIG protection.