1SDA060977R1 ABB E1N-A 1200 PR123/P-LSIG 1200A 3P Withdrawable Air Circuit Breaker

Why Choose the ABB E1N-A 1200 PR123/P-LSIG 1200A 3P Air Circuit Breaker?

The ABB E1N-A 1200 PR123/P-LSIG, order code 1SDA060977R1, is a high-performance SACE Emax air circuit breaker moving part designed for protection and switching in demanding low-voltage power-distribution systems. Rated at 1200 A, this three-pole E1N-A breaker combines robust high-current switching capability with ABB's advanced PR123/P-LSIG electronic overcurrent release.

This specific configuration is a withdrawable moving part (W MP) with an R1200 rating plug and 18,000 A instantaneous protection reference. The PR123/P-LSIG release provides long-time, short-time, instantaneous and earth-fault protection functions, delivering comprehensive LSIG protection against overloads, short circuits and earth faults.

The E1N-A 1200 frame provides a 50 kA short-circuit current rating at 480 V and a 50 kA short-time current rating. Its withdrawable construction allows the breaker moving part to be isolated and removed from its compatible fixed cradle, supporting inspection, servicing and replacement in critical industrial switchboards.

Key Advantages

• High-current 1200 A SACE Emax air circuit breaker moving part.
• PR123/P-LSIG electronic overcurrent release provides comprehensive circuit protection.
• Integrated long-time, short-time, instantaneous and earth-fault protection.
• Three-pole configuration for three-phase low-voltage distribution systems.
• Withdrawable moving-part construction supports efficient inspection and maintenance.
• 50 kA short-circuit current rating at 480 V.
• 50 kA short-time current rating for demanding distribution applications.

Key Features

• ABB SACE Emax E1N-A 1200 circuit breaker platform.
• 1200 A rated current.
• Three poles.
• PR123/P-LSIG electronic overcurrent release.
• R1200 rating plug.
• LSIG protection: long-time, short-time, instantaneous and earth-fault functions.
• 18,000 A instantaneous protection reference.
• 50 kA short-circuit current rating at 480 V.
• 50 kA short-time current rating.
• Withdrawable moving part (W MP).
• Designed for use with the corresponding SACE Emax fixed cradle.
• UL configuration for low-voltage power-distribution applications.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E1N-A protect low-voltage electrical networks by detecting abnormal current conditions and interrupting the circuit before overloads, short circuits or earth faults can damage conductors, switchgear and connected equipment. The PR123/P-LSIG electronic release provides coordinated long-time, short-time, instantaneous and earth-fault protection for comprehensive distribution-system protection.

The withdrawable architecture is particularly valuable in critical switchboards because the circuit-breaker moving part can be isolated from its fixed cradle and removed for servicing or replacement. Combined with its 1200 A rating and 50 kA short-circuit performance at 480 V, the E1N-A 1200 provides a robust solution for high-capacity industrial and commercial power-distribution systems.

Typical Applications

• Industrial low-voltage main distribution switchboards.
• High-current incoming supply protection.
• Feeder and distribution circuit protection.
• Manufacturing and process-industry electrical systems.
• Commercial and infrastructure power distribution.
• Critical switchgear installations requiring withdrawable circuit breakers.