1SDA057016R1 ABB E6H6300 PR121/P-LI 6300A 4-Pole Fixed Air Circuit Breaker

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

The ABB 1SDA057016R1, product designation E6H6300PR121/P-LIIn=6300A4pFH, is a high-current SACE Emax air circuit breaker (ACB) designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the ABB SACE Emax E6H series, this four-pole fixed circuit breaker combines a 6300 A current rating 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 equipment against sustained overloads and severe short-circuit faults.

With a rated operational voltage of up to 690 V AC and an ultimate short-circuit breaking capacity of 100 kA at 415 V AC, the E6H6300 provides substantial fault-clearing capability for high-capacity distribution networks. This version uses a four-pole fixed configuration, providing simultaneous switching across four poles for compatible low-voltage power distribution applications.

Key Advantages

• High-current ABB SACE Emax E6H air circuit breaker for demanding low-voltage distribution systems.
• 6300 A rated current for major industrial and infrastructure installations.
• PR121/P-LI electronic overcurrent release with long-time and instantaneous protection.
• 100 kA ultimate and service short-circuit breaking capacity at 415 V AC.
• Four-pole fixed configuration for permanent integration into high-capacity switchboards.
• 100 kA short-time withstand current for 1 s for demanding distribution applications.
• ABB SACE Emax construction designed for high-current switching and circuit protection.

Key Features

• ABB SACE Emax E6H series.
• 6300 A rated current.
• Four-pole configuration.
• Fixed circuit breaker.
• PR121/P-LI electronic trip unit.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• 690 V AC maximum rated operational voltage.
• 100 kA Icu at 415 V AC.
• 100 kA Ics at 415 V AC.
• 100 kA short-time withstand current for 1 s.
• 85 kA short-time withstand current for 3 s.
• H-performance SACE Emax breaker platform.

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 and substantial short-circuit performance, the E6H platform is particularly suited to main incoming supplies, large switchboards, transformer secondary systems and industrial distribution networks where significant electrical loads and 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. Combined with its four-pole fixed construction, the E6H6300 provides a robust solution for high-current electrical distribution systems requiring dependable electronic circuit protection.

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 electronic LI protection.