1SDA057309R1 ABB E2N-A 1200 PR121/P-LSI 1200 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E2N-A 1200 PR121/P-LSI 1200 A Air Circuit Breaker?

The ABB E2N-A 1200 PR121/P-LSI, order code 1SDA057309R1, is a SACE Emax E2N-A air circuit breaker moving part designed for protection, switching and isolation in demanding low-voltage power distribution systems. Rated at 1200 A, this three-pole withdrawable unit combines ABB's E2N-A breaker platform with a PR121/P-LSI R1200 electronic overcurrent release.

This UL configuration forms part of the ABB SACE Emax family and is intended for industrial switchboards, distribution systems and infrastructure applications requiring dependable electronic overcurrent protection. The PR121/P-LSI release provides long-time overload, short-time short-circuit and instantaneous short-circuit protection, supporting coordinated protection of important incoming and feeder circuits.

The breaker is supplied as a three-pole withdrawable moving part with an Im 18000 A configuration. It is fitted with four auxiliary contacts and open/closed position indication, while its draw-out construction supports efficient inspection, servicing and replacement within a compatible ABB SACE Emax fixed part.

Key Advantages

• 1200 A rated current for substantial low-voltage power distribution circuits.
• PR121/P-LSI R1200 electronic overcurrent release for dependable circuit protection.
• LSI protection functions provide long-time overload, short-time short-circuit and instantaneous short-circuit protection.
• Three-pole withdrawable moving-part configuration for serviceable switchgear installations.
• Withdrawable construction facilitates breaker inspection, maintenance and replacement.
• Im 18000 A configuration for the E2N-A 1200 breaker.
• Fitted with four auxiliary contacts and open/closed position indication.
• UL configuration for applications requiring the corresponding ABB E2N-A breaker variant.

Key Features

• ABB SACE Emax E2N-A series.
• 1200 A rated current.
• Three-pole configuration.
• Withdrawable moving part execution.
• PR121/P-LSI R1200 electronic overcurrent release.
• Long-time overload protection (L).
• Short-time short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Im 18000 A configuration.
• Four auxiliary contacts for breaker status signalling.
• Open/closed breaker position indication.
• Designed for use with a compatible SACE Emax withdrawable fixed part.

Advanced LSI Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB SACE Emax E2 provide switching, isolation and overcurrent protection for substantial low-voltage electrical distribution systems. The E2N-A platform and 1200 A current rating make this configuration suitable for important incoming and feeder circuits where dependable operation and effective fault protection are required.

The PR121/P-LSI electronic release combines long-time overload, short-time short-circuit and instantaneous short-circuit protection. The short-time protection function supports selective coordination with downstream protective devices, while the withdrawable construction provides maintenance flexibility by allowing the breaker moving part to be removed from its compatible fixed assembly.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial incoming and feeder circuits.
• Manufacturing and process plant electrical systems.
• Commercial building power distribution.
• Transformer secondary distribution circuits.
• Withdrawable switchgear and distribution assemblies.
• Infrastructure and critical low-voltage power systems.