1SDA056069R1 ABB E2L1250 PR122/P-LSIG 1250A 3P Withdrawable Air Circuit Breaker

Why Choose the ABB E2L1250 PR122/P-LSIG 1250A 3P Withdrawable Air Circuit Breaker?

The ABB E2L1250 PR122/P-LSIG, order code 1SDA056069R1, is a high-performance SACE Emax air circuit breaker moving part designed for protection and switching in demanding low-voltage power distribution systems. As part of the ABB SACE Emax E2L series, this three-pole withdrawable circuit breaker is rated at 1250 A and incorporates the advanced PR122/P-LSIG R1250 electronic overcurrent release.

The PR122/P-LSIG trip unit provides comprehensive long-time overload (L), short-time short-circuit (S), instantaneous short-circuit (I) and earth-fault (G) protection. This combination enables coordinated protection against overloads, short circuits and earth faults, helping safeguard cables, busbars, switchgear and connected equipment in high-current electrical distribution systems.

This E2L1250 configuration is a three-pole withdrawable moving part for compatible SACE Emax switchgear. It has a rated uninterrupted current of 1250 A, a rated voltage of 690 V AC and a rated ultimate short-circuit breaking capacity of 130 kA at 400 V AC, providing robust fault protection and maintainability for critical low-voltage distribution installations.

Key Advantages

• High-performance 1250 A SACE Emax air circuit breaker moving part.
• Advanced PR122/P electronic overcurrent release for comprehensive circuit protection.
• LSIG protection against overload, short-time short-circuit, instantaneous short-circuit and earth-fault conditions.
• Three-pole configuration for three-phase low-voltage distribution systems.
• Withdrawable execution supports efficient inspection, servicing and replacement in compatible switchboards.
• High ultimate short-circuit breaking capacity of 130 kA at 400 V AC.

Key Features

• ABB SACE Emax E2L 1250 air circuit breaker moving part.
• 1250 A rated uninterrupted current.
• Three-pole configuration.
• PR122/P-LSIG R1250 electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Integrated earth-fault protection (G).
• Withdrawable / moving-part execution.
• Fitted with four auxiliary change-over contacts and circuit breaker open/closed position indication.

Advanced LSIG Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E2L1250 provide switching and protection for high-current low-voltage distribution circuits. The electronic overcurrent release monitors electrical conditions and initiates breaker operation when configured protection thresholds are exceeded, helping protect cables, busbars, switchgear and connected electrical equipment.

The PR122/P-LSIG release combines long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection within a single electronic trip unit. Together with the E2L frame's high fault-interruption capability and three-pole withdrawable construction, this configuration provides comprehensive protection for main distribution and feeder circuits while supporting maintainable switchboard designs.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plant switchgear.
• Commercial building electrical distribution.
• Infrastructure and utility installations.
• Main incomer and high-current feeder protection.
• Three-phase distribution systems requiring earth-fault protection.
• Switchboards requiring withdrawable circuit breaker assemblies.