1SDA057417R1 ABB E3N-A 2500 PR122/P-LSI 2500 A 3-Pole Withdrawable Circuit Breaker

Why Choose the ABB 1SDA057417R1 E3N-A 2500 Circuit Breaker?

The ABB 1SDA057417R1 is a high-performance SACE Emax E3N-A air circuit breaker moving part designed for reliable protection and switching in high-current low-voltage electrical distribution systems. Rated at 2500 A, this three-pole withdrawable configuration incorporates an advanced PR122/P-LSI R2500 electronic overcurrent release providing long-time, short-time and instantaneous protection.

As part of the proven ABB SACE Emax series, the E3N-A 2500 combines robust switching technology with configurable electronic protection for industrial switchboards, power distribution panels and critical electrical infrastructure. Its withdrawable moving-part construction supports installations where straightforward inspection, servicing and replacement are important requirements.

This configuration is a three-pole withdrawable moving part with a PR122/P-LSI R2500 overcurrent release and an instantaneous setting of 37,500 A. It is supplied with four auxiliary contacts and open/closed position indication, providing useful circuit breaker status signalling for switchboard control and monitoring systems.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker moving part for low-voltage power distribution.
• 2500 A rated current for high-current industrial applications.
• PR122/P-LSI electronic trip unit for comprehensive overcurrent protection.
• Provides long-time, short-time and instantaneous protection.
• Three-pole withdrawable configuration supports convenient maintenance and servicing.
• Moving-part design intended for integration with a compatible Emax fixed part.
• Four auxiliary contacts provide circuit breaker status signalling.
• Open/closed position indication assists switchboard operation and monitoring.

Key Features

• ABB SACE Emax E3N-A series.
• 2500 A rated current.
• Three-pole circuit breaker moving part.
• Withdrawable execution.
• PR122/P-LSI R2500 electronic overcurrent release.
• Long-time (L), short-time (S) and instantaneous (I) protection functions.
• 37,500 A instantaneous setting.
• Four auxiliary contacts fitted.
• Open/closed circuit breaker position indication.
• UL configuration for low-voltage power distribution systems.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3N-A protect low-voltage distribution systems against potentially damaging overload and short-circuit conditions while also providing controlled switching and isolation. Their high current capacity makes them particularly suitable for main distribution boards, industrial switchgear and other installations carrying substantial electrical loads.

The PR122/P-LSI electronic release provides long-time protection against sustained overloads, short-time protection for selective coordination and instantaneous protection against severe short-circuit currents. Combined with the withdrawable Emax construction, these functions provide dependable electrical protection together with valuable service and maintenance flexibility.

Typical Applications

• Main low-voltage electrical distribution boards.
• Industrial power distribution systems.
• Factory and manufacturing switchgear.
• Commercial and infrastructure electrical installations.
• Transformer secondary protection and distribution.
• High-current feeder protection.
• Power control centres and withdrawable switchboards.
• Critical electrical distribution infrastructure.