1SDA056341R1 ABB E3H800 PR122/P-LSIG 800A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E3H800 PR122/P-LSIG 800A 3-Pole Air Circuit Breaker?

The ABB E3H800 PR122/P-LSIG, order code 1SDA056341R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for switching and protection in demanding low-voltage electrical distribution systems. As part of the ABB SACE Emax E3 series, this three-pole fixed circuit breaker combines an 800 A rated current with the PR122/P-LSIG R800 electronic overcurrent release.

The PR122/P-LSIG trip unit provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection. This comprehensive LSIG configuration supports selective coordination while protecting electrical distribution equipment against sustained overloads, short circuits and earth faults.

With an 800 A rated current, three-pole configuration, fixed construction and rear horizontal terminals, the E3H800 is designed for permanent integration into low-voltage switchboards. The E3H performance level provides high short-circuit interruption capability, making this breaker particularly suitable for distribution systems where high prospective fault currents require robust protection.

Key Advantages

• High-performance ABB SACE Emax E3H air circuit breaker for demanding low-voltage distribution systems.
• 800 A rated current for substantial electrical loads.
• Three-pole configuration for three-phase electrical distribution systems.
• Advanced PR122/P-LSIG R800 electronic overcurrent release.
• Comprehensive long-time, short-time, instantaneous and ground-fault protection.
• E3H high-breaking-capacity performance level for installations with substantial prospective fault currents.
• Fixed construction for permanent switchboard integration.
• Rear horizontal terminals provide a practical connection arrangement for switchboard busbar systems.

Key Features

• ABB SACE Emax E3H800 air circuit breaker.
• 800 A rated current.
• Three-pole (3P) configuration.
• PR122/P-LSIG electronic overcurrent release.
• R800 release rating.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Ground-fault protection (G).
• Fixed (F) installation.
• Rear horizontal (HR) terminals.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• High E3H short-circuit performance for demanding power distribution systems.

Advanced Circuit Protection for High-Fault-Level Power Distribution

Air circuit breakers such as the ABB SACE Emax E3H800 provide switching, isolation and overcurrent protection for important low-voltage distribution circuits. The electronic trip unit monitors electrical conditions and initiates circuit-breaker operation when configured protection thresholds are exceeded, helping protect cables, switchgear and connected equipment against damaging overloads, short circuits and earth faults.

The PR122/P-LSIG release provides four complementary protection functions for effective coordination within electrical distribution systems. Long-time protection responds to sustained overloads, short-time protection supports selective fault clearing, instantaneous protection rapidly interrupts severe short circuits, and ground-fault protection provides additional protection against earth-fault conditions. Combined with the E3H breaker platform's high short-circuit performance, this makes the 1SDA056341R1 suitable for demanding distribution networks with substantial prospective fault levels.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution systems.
• Transformer and generator distribution systems.
• Commercial and infrastructure electrical installations.
• Manufacturing and process facilities.
• Incomer and high-capacity feeder protection.