1SDA061117R1 ABB E2H-A 1200 PR121/P-LSIG 1200 A 3-Pole Air Circuit Breaker

Why Choose the ABB 1SDA061117R1 E2H-A 1200 Air Circuit Breaker?

The ABB 1SDA061117R1 is a high-performance E2H-A 1200 air circuit breaker (ACB) designed for protection and switching in demanding low-voltage power distribution systems. Part of the established ABB SACE Emax series, this three-pole breaker combines a 1200 A rated current with the PR121/P electronic overcurrent release for dependable protection in industrial, commercial and infrastructure installations.

The breaker is equipped with an ABB PR121/P electronic trip unit with LSIG protection functions, providing long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. This comprehensive protection combination supports coordinated distribution-system design while extending protection to qualifying earth-fault conditions.

With its E2H-A performance level, three-pole construction and 1200 A current rating, the 1SDA061117R1 is suitable for substantial incoming, feeder and distribution duties. Its SACE Emax architecture combines robust switching capability with electronic protection for low-voltage switchgear where reliability, selectivity and continuity of electrical service are important.

Key Advantages

• High-performance 1200 A air circuit breaker for demanding low-voltage distribution systems.
• PR121/P electronic trip unit provides dependable electronic overcurrent protection.
• LSIG protection functions cover long-time, short-time, instantaneous and earth-fault conditions.
• Three-pole construction for three-phase low-voltage power distribution.
• Short-time protection supports effective selectivity and coordination between protective devices.
• Earth-fault protection extends coverage beyond conventional overload and short-circuit protection.
• Part of the proven ABB SACE Emax E2H-A circuit-breaker platform.

Key Features

• ABB SACE Emax E2H-A 1200 air circuit breaker.
• 1200 A rated current.
• 3-pole configuration.
• PR121/P electronic overcurrent release.
• LSIG protection for long-time, short-time, instantaneous and earth-fault conditions.
• Electronic protection designed for coordinated low-voltage distribution systems.
• E2H-A performance class for demanding power distribution duties.
• Suitable for industrial, commercial and infrastructure switchgear applications.

Advanced LSIG Protection for Power Distribution

Air circuit breakers such as the ABB E2H-A 1200 provide switching and protection for high-current low-voltage distribution circuits. They are commonly applied to incoming, feeder and distribution duties where dependable interruption of overload and short-circuit faults is essential for maintaining electrical system safety, availability and continuity of service.

The PR121/P electronic trip unit provides LSIG protection, combining long-time overload, short-time short-circuit and instantaneous protection with an earth-fault protection function. This combination supports coordinated protection strategies and enables the breaker to respond to a broad range of abnormal current conditions within suitable low-voltage distribution systems.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Incoming and feeder circuit protection.
• Manufacturing and process plant electrical systems.
• Commercial and infrastructure power distribution.
• Distribution systems requiring LSIG electronic protection.