1SDA056357R1 ABB E3H800 PR122/P-LSIG 800A 3-Pole Withdrawable Air Circuit Breaker

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

The ABB E3H800 PR122/P-LSIG, order code 1SDA056357R1, is a high-performance SACE Emax air circuit breaker (ACB) moving part designed for switching and protection in demanding low-voltage electrical distribution systems. As part of the ABB SACE Emax E3 series, this three-pole withdrawable breaker combines an 800 A rated uninterrupted 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 in demanding industrial, commercial and infrastructure installations.

With an 800 A rated current, three-pole configuration and withdrawable moving-part construction, the E3H800 is suited to switchboards where high fault interruption performance and maintainability are required. The E3H performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 400–415 V AC and rated service short-circuit breaking capacity of 85 kA at 400–415 V AC.

Key Advantages

• High-performance ABB SACE Emax E3H air circuit breaker moving part for demanding low-voltage distribution systems.
• 800 A rated uninterrupted 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.
• 100 kA ultimate short-circuit breaking capacity at 400–415 V AC.
• 85 kA service short-circuit breaking capacity at 400–415 V AC.
• Withdrawable construction supports convenient inspection, servicing and replacement.

Key Features

• ABB SACE Emax E3H800 air circuit breaker moving part.
• 800 A rated uninterrupted 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).
• Withdrawable (W) execution.
• Moving part (MP) for the withdrawable SACE Emax system.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• Four auxiliary contacts with circuit-breaker open/closed position indication.

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's high short-circuit performance and withdrawable construction, the 1SDA056357R1 is well suited to distribution systems requiring robust protection and convenient serviceability.

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.