1SDA056680R1 ABB E3V2500 PR121/P-LI 2500 A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3V2500 PR121/P-LI Air Circuit Breaker?

The ABB E3V2500 PR121/P-LI, order code 1SDA056680R1, is a high-performance SACE Emax air circuit breaker (ACB) moving part designed for protection and switching in high-current low-voltage power-distribution systems. Part of the ABB SACE Emax E3 series, this four-pole withdrawable configuration combines a 2500 A rated current with the PR121/P-LI electronic overcurrent release.

The PR121/P-LI release provides long-time overload and instantaneous short-circuit protection, helping protect switchboards, conductors and downstream electrical equipment against damaging overcurrents. The E3V performance level provides high short-circuit breaking capability for demanding industrial, commercial and infrastructure power-distribution installations.

This model is a four-pole withdrawable moving part rated for operation up to 690 V AC. It incorporates four auxiliary contacts and open/closed position indication, while its withdrawable construction supports inspection, maintenance and replacement within compatible SACE Emax fixed parts without permanently disturbing the main switchboard installation.

Key Advantages

• High-current 2500 A SACE Emax air circuit breaker moving part.
• PR121/P-LI electronic overcurrent release provides overload and instantaneous short-circuit protection.
• Four-pole configuration for switching and protection of three-phase systems with neutral.
• Withdrawable construction supports efficient switchboard maintenance and servicing.
• High V-level short-circuit performance for demanding electrical distribution networks.
• 690 V AC rated operational voltage supports a wide range of industrial applications.
• Integrated auxiliary contacts and position indication support switchboard monitoring and control.

Key Features

• ABB SACE Emax E3V2500 air circuit breaker moving part.
• 2500 A rated current.
• Four-pole withdrawable version.
• PR121/P-LI electronic overcurrent release.
• L protection: long-time overload protection.
• I protection: instantaneous short-circuit protection.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• Four auxiliary contacts with open/closed position indication.
• High short-circuit breaking capacity for demanding low-voltage distribution systems.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3V2500 provide switching and overcurrent protection at main incomer and feeder levels of low-voltage electrical distribution systems. The PR121/P-LI electronic release monitors circuit current and provides long-time protection against sustained overload conditions together with instantaneous tripping during severe short-circuit faults.

The withdrawable design is particularly valuable in critical switchboards where maintenance accessibility and service continuity are important. The moving part can be disconnected from its compatible fixed section for inspection or servicing, while the E3V platform provides the high current and short-circuit performance required by demanding industrial power networks.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power-distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Transformer secondary and main incomer protection.
• High-current feeder protection.
• Withdrawable switchgear and power-distribution assemblies.