1SDA056673R1 ABB E3V2500 PR121/P-LSI 2500 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3V2500 PR121/P-LSI 1SDA056673R1 Air Circuit Breaker?

The ABB 1SDA056673R1 is a high-performance SACE Emax E3 V withdrawable air circuit breaker (ACB) moving part designed for protection and switching in demanding low-voltage electrical distribution systems. As part of the ABB SACE Emax series, this three-pole breaker combines a 2500 A rated uninterrupted current with high short-circuit performance for industrial, commercial and infrastructure power distribution applications.

The E3V2500 is equipped with an ABB PR121/P-LSI R2500 electronic overcurrent release, providing long-time overload, short-time short-circuit and instantaneous short-circuit protection. These L, S and I protection functions protect against sustained overcurrents and short circuits while allowing selective coordination within complex electrical distribution networks.

With a rated uninterrupted current of 2500 A, a rated voltage of 690 V AC and a three-pole withdrawable configuration, the 1SDA056673R1 is well suited to main distribution boards, industrial switchgear and high-current feeder applications. The E3 V performance level provides a rated ultimate short-circuit breaking capacity of 130 kA at 400 V AC, while the withdrawable moving-part design supports efficient isolation, inspection and maintenance.

Key Advantages

• High-performance ABB SACE Emax E3 V air circuit breaker moving part for demanding low-voltage distribution systems.
• 2500 A rated uninterrupted current for high-current power distribution applications.
• Three-pole withdrawable configuration supports flexible switchboard operation and maintenance.
• PR121/P-LSI R2500 electronic release provides long-time, short-time and instantaneous overcurrent protection.
• High 130 kA ultimate short-circuit breaking capacity at 400 V AC.
• Withdrawable construction allows efficient isolation, servicing and replacement within compatible SACE Emax switchgear.

Key Features

• ABB SACE Emax E3 V series.
• 2500 A rated uninterrupted current.
• Three-pole withdrawable air circuit breaker moving part.
• PR121/P-LSI R2500 electronic overcurrent release.
• Long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection.
• 690 V AC rated voltage.
• 130 kA Icu at 400 V AC.
• 85 kA rated short-time withstand current for 1 s.
• 1000–2500 A overload release setting range.
• 2500–25000 A short-time delayed short-circuit setting range.
• 3750–37500 A instantaneous short-circuit setting range.
• Four auxiliary changeover contacts.
• Open/closed circuit-breaker position indication.
• Optional motor operating mechanism for automated switching applications.

Selective Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3V2500 provide controlled switching and protection for high-current low-voltage distribution circuits. The PR121/P-LSI electronic release combines long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection, helping safeguard switchboards, conductors and connected electrical equipment against damaging overcurrent and fault conditions.

The short-time protection function supports selective coordination between upstream and downstream protective devices, helping isolate faults at the appropriate level of the electrical distribution system. Combined with the high-breaking-capacity E3 V platform and withdrawable construction, the 1SDA056673R1 is particularly suited to high-capacity switchgear where dependable protection, system availability and maintainability are important.

Typical Applications

• Main low-voltage electrical distribution boards.
• Industrial withdrawable switchboards and switchgear assemblies.
• Manufacturing plants and process facilities.
• Commercial and infrastructure power distribution systems.
• High-current incomer and feeder circuit protection.
• Electrical networks requiring selective short-circuit protection.