1SDA056744R1 ABB E3L2000 PR121/P-LI 2000 A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3L2000 PR121/P-LI Air Circuit Breaker?

The ABB E3L2000 PR121/P-LI, order code 1SDA056744R1, is a SACE Emax air circuit breaker moving part engineered for switching and overcurrent protection in high-current low-voltage power-distribution systems. Part of the ABB SACE Emax E3 series, this four-pole withdrawable configuration combines a 2000 A rated current with the PR121/P-LI R2000 electronic overcurrent release.

The PR121/P-LI release provides long-time overload and instantaneous short-circuit protection, helping protect conductors, switchboards and downstream equipment against sustained overcurrents and severe short-circuit faults. The E3L performance level delivers substantial breaking capacity for industrial, commercial and infrastructure distribution systems.

This model is the four-pole withdrawable moving part of the circuit breaker and is intended for use with the corresponding SACE Emax fixed part. It incorporates four auxiliary contacts and open/closed circuit-breaker position indication, while its withdrawable design supports inspection and servicing in switchboards where maintainability and continuity of operation are important.

Key Advantages

• High-current 2000 A SACE Emax air circuit breaker moving part.
• PR121/P-LI R2000 electronic release provides long-time and instantaneous overcurrent protection.
• Four-pole configuration supports three-phase systems with neutral switching.
• Withdrawable construction facilitates inspection, maintenance and circuit-breaker servicing.
• High 130 kA ultimate short-circuit breaking capacity at 400 V AC.
• 690 V AC rated operational voltage for demanding low-voltage distribution networks.
• Four auxiliary contacts and open/closed position indication support switchboard signalling and control.

Key Features

• ABB SACE Emax E3L2000 air circuit breaker moving part.
• 2000 A rated uninterrupted current.
• Four-pole withdrawable version.
• PR121/P-LI R2000 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 for signalling and control.
• Integrated circuit-breaker open/closed position indication.
• IEC-compliant SACE Emax construction.

Reliable LI Protection for High-Current Power Distribution

The ABB SACE Emax E3L2000 is designed for switching and protection at main incomer and feeder levels within substantial low-voltage distribution systems. Its PR121/P-LI electronic release provides long-time protection against sustained overload conditions together with instantaneous intervention when severe short-circuit currents occur, helping minimise damage to conductors and connected equipment.

The combination of a 2000 A current rating, four-pole construction and withdrawable design makes the 1SDA056744R1 particularly suitable for switchboards where both high electrical performance and serviceability are required. When installed with the corresponding fixed part, the moving circuit breaker can be withdrawn for inspection and maintenance, while the E3L platform provides robust fault interruption across low-voltage distribution 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.