1SDA057032R1 ABB E6H6300 PR121/P-LI 6300A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E6H6300 PR121/P-LI 6300A 4-Pole Withdrawable Air Circuit Breaker?

The ABB 1SDA057032R1, product designation E6H6300PR121/P-LIIn=6300A4pWM, is a high-current SACE Emax air circuit breaker designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax E6H series, this four-pole withdrawable circuit breaker combines a 6300 A rated current with the PR121/P-LI electronic overcurrent release.

The E6H6300 is engineered for major industrial, commercial and infrastructure power distribution applications where dependable overload and short-circuit protection is essential. Its PR121/P-LI electronic trip unit provides long-time and instantaneous protection functions, helping safeguard busbars, cables, switchgear and connected electrical equipment against sustained overloads and severe short-circuit faults.

The four-pole withdrawable configuration is particularly suited to high-capacity switchboards where maintainability and operational flexibility are important. The withdrawable design allows the breaker to be disconnected from its compatible fixed part for inspection, servicing or replacement, while the E6H performance class provides the high fault-handling capability required in demanding low-voltage distribution networks.

Key Advantages

• High-current ABB SACE Emax E6H air circuit breaker for demanding low-voltage distribution systems.
• 6300 A rated current for major industrial, commercial and infrastructure installations.
• PR121/P-LI electronic overcurrent release with long-time and instantaneous protection.
• Four-pole withdrawable configuration for flexible integration into high-capacity switchboards.
• Withdrawable construction supports inspection, maintenance and replacement strategies.
• High short-circuit performance for installations with substantial prospective fault currents.
• ABB SACE Emax construction designed for dependable high-current switching and circuit protection.

Key Features

• ABB SACE Emax E6H series.
• 6300 A rated current.
• Four-pole configuration.
• Withdrawable circuit breaker.
• PR121/P-LI electronic trip unit.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• LI protection for high-current distribution systems.
• 6300 A rating plug for the E6 frame.
• H-performance SACE Emax breaker platform.
• Designed for use with a compatible SACE Emax fixed part.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E6H6300 provide switching and protection for high-capacity low-voltage distribution networks. With a rated current of 6300 A, the E6H platform is particularly suited to main incoming supplies, large switchboards, transformer secondary systems and industrial distribution networks where substantial electrical loads and high prospective fault currents must be safely managed.

The PR121/P-LI electronic release provides complementary long-time and instantaneous protection functions. Long-time protection responds to sustained overload conditions that could otherwise damage conductors and equipment, while instantaneous protection provides rapid interruption during severe short-circuit faults. The withdrawable construction further supports maintenance by allowing the breaker to be removed from its compatible fixed section when required.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• High-current industrial power distribution systems.
• Large switchgear and busbar assemblies.
• Transformer secondary protection and distribution.
• Manufacturing and heavy process plants.
• Data centre and critical infrastructure power distribution.
• Commercial and infrastructure electrical installations.
• High-capacity four-pole distribution systems requiring withdrawable electronic LI protection.