1SDA057039R1 ABB E6H6300 PR123/P-LSIG 6300A 4-Pole Withdrawable Air Circuit Breaker Moving Part

Why Choose the ABB E6H6300 PR123/P-LSIG 6300A 4-Pole Withdrawable Air Circuit Breaker?

The ABB 1SDA057039R1 is a high-performance SACE Emax E6H air circuit breaker moving part designed for protection and switching of very high-current low-voltage electrical distribution systems. As part of the ABB New Emax series, the E6H6300 combines a substantial 6300 A current rating with the advanced PR123/P-LSIG electronic overcurrent release for comprehensive protection in demanding industrial, commercial and infrastructure power distribution applications.

This four-pole withdrawable circuit breaker moving part is equipped with the PR123/P-LSIG electronic trip unit, providing long-time overload (L), selective short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection. Its withdrawable configuration allows the breaker moving part to be isolated and removed from the associated fixed part, supporting inspection, maintenance and replacement within compatible switchgear.

With a rated current of 6300 A, a rated operational voltage up to 690 V AC and E6H short-circuit performance of 100 kA at 415 V AC, the 1SDA057039R1 is engineered for major power distribution applications where very high current capacity, comprehensive fault protection, selective coordination and serviceability are essential.

Key Advantages

• Very high-capacity 6300 A air circuit breaker moving part for low-voltage power distribution.
• Four-pole configuration for three-phase systems requiring neutral switching.
• Advanced PR123/P-LSIG electronic protection release.
• Comprehensive LSIG protection covering overload, selective short-circuit, instantaneous short-circuit and earth-fault conditions.
• 100 kA short-circuit performance at 415 V AC for demanding electrical installations.
• Rated operational voltage up to 690 V AC.
• Withdrawable moving-part design supports maintenance and servicing of critical switchgear.
• Four-pole construction provides switching of the neutral conductor alongside all three phases.

Key Features

• ABB SACE Emax E6H series.
• 6300 A rated current.
• 4-pole withdrawable moving part.
• PR123/P-LSIG electronic trip unit.
• Long-time overload (L) protection.
• Selective short-circuit (S) protection.
• Instantaneous short-circuit (I) protection.
• Earth-fault (G) protection.
• 690 V AC maximum rated operational voltage.
• 100 kA Icu and Ics at 415 V AC.
• 100 kA short-time withstand current for 1 s.
• 85 kA short-time withstand current for 3 s.
• H short-circuit performance level.
• Withdrawable configuration for compatible E6 switchgear.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E6H6300 provide switching and protection for very high-current low-voltage distribution circuits. The electronic trip unit monitors electrical conditions and initiates circuit interruption when configured protection thresholds are exceeded, helping protect busbars, cables, transformers and connected equipment against damaging overload, short-circuit and earth-fault conditions.

The PR123/P-LSIG release combines long-time, selective short-circuit, instantaneous and earth-fault protection functions for sophisticated electrical distribution networks. Combined with the E6H6300's 6300 A current capability, four-pole construction, 100 kA short-circuit performance and withdrawable design, the 1SDA057039R1 is particularly suitable for critical installations requiring comprehensive protection and serviceable switchgear.

Typical Applications

• Low-voltage main distribution switchboards.
• Withdrawable industrial switchgear assemblies.
• Very high-current incoming and feeder circuits.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.
• Transformer secondary protection and switching.
• Generator and utility distribution systems.
• Four-wire electrical systems requiring neutral switching and earth-fault protection.