1SDA056807R1 ABB E4S4000 PR123/P-LSIG 4000 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E4S4000 PR123/P-LSIG Air Circuit Breaker?

The ABB 1SDA056807R1 is a high-performance SACE Emax E4S air circuit breaker moving part designed for switching and protection in high-current low-voltage electrical distribution systems. Identified as E4S4000 PR123/P-LSIG, this three-pole withdrawable circuit breaker combines a 4000 A rated current with ABB's advanced PR123/P-LSIG electronic overcurrent release for comprehensive circuit protection.

As part of the ABB SACE Emax / New Emax range, the E4S4000 is engineered for demanding industrial, commercial and infrastructure power distribution applications. Its S short-circuit performance level provides an ultimate and service short-circuit breaking capacity of 75 kA at 400 V AC, maintained through to 690 V AC, together with a rated short-time withstand current of 75 kA for 1 s and 3 s.

The integrated PR123/P-LSIG electronic trip unit provides long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and ground-fault (G) protection. With a rated operational voltage of 690 V AC, three-pole configuration and 4000 A rated uninterrupted current, the 1SDA056807R1 is well suited to main incoming, feeder and distribution protection duties where high breaking capacity, advanced electronic protection and withdrawable construction are required.

Key Advantages

• High-capacity 4000 A air circuit breaker moving part for demanding low-voltage power distribution.
• Three-pole configuration for three-phase electrical systems.
• PR123/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and ground-fault protection.
• High 75 kA Icu and Ics at 400 V AC short-circuit breaking performance.
• Maintains 75 kA Icu and Ics at 690 V AC for demanding higher-voltage low-voltage distribution systems.
• 75 kA short-time withstand current for both 1 s and 3 s.
• Withdrawable moving-part construction supports convenient inspection, servicing and maintenance.
• Integrated ground-fault protection provides additional protection for electrical distribution systems.

Key Features

• ABB SACE Emax E4S series.
• 4000 A rated operational and uninterrupted current.
• Three-pole circuit breaker configuration.
• PR123/P-LSIG electronic overcurrent release.
• Long-time overload, short-time, instantaneous and ground-fault protection.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 75 kA Icu and Ics at 400 V AC.
• 75 kA Icu and Ics at 690 V AC.
• 75 kA rated short-time withstand current for 1 s and 3 s.
• Withdrawable moving-part design for use with the corresponding fixed part.
• 15,000-operation mechanical endurance.
• Fitted with four auxiliary contacts and circuit breaker open/closed position indication.

Advanced Protection for High-Current Power Distribution

Air circuit breakers such as the ABB E4S4000 provide switching and protection for high-current low-voltage distribution systems. The circuit breaker interrupts abnormal current conditions to help protect cables, busbars, switchgear and connected equipment against damage caused by overloads, short circuits and ground faults.

The PR123/P-LSIG electronic release combines long-time overload, selective short-time, instantaneous short-circuit and ground-fault protection with the advanced functionality of ABB's PR123/P trip-unit platform. Combined with the E4S's 75 kA breaking and short-time withstand performance and its withdrawable construction, the 1SDA056807R1 is suited to critical distribution systems where protection performance, selectivity and maintainability are key requirements.

Typical Applications

• Main incoming circuit protection in high-current low-voltage switchboards.
• Industrial power distribution systems.
• Transformer and generator secondary distribution systems.
• Protection of high-current distribution feeders and busbar systems.
• Large commercial and infrastructure electrical installations.
• Manufacturing plants and process facilities.
• Data centres and other critical power distribution installations.
• High-current switchgear and electrical distribution assemblies.