1SDA055930R1 ABB E2N 2000 PR121/P-LSIG 2000 A 4-Pole Air Circuit Breaker

Why Choose the ABB 1SDA055930R1 E2N 2000 Air Circuit Breaker?

The ABB 1SDA055930R1 is a SACE Emax E2N 2000 air circuit breaker designed for high-current switching and comprehensive electronic protection in demanding low-voltage AC power distribution systems. This four-pole fixed circuit breaker has a rated current of 2000 A and is equipped with a PR121/P-LSIG R2000 electronic overcurrent release.

The PR121/P-LSIG release provides long-time, short-time, instantaneous and earth-fault protection, giving the breaker comprehensive protection against overloads, short circuits and earth-fault conditions. The E2N performance level provides a rated ultimate and service short-circuit breaking capacity of 65 kA at 415 V AC, together with a rated short-time withstand current of 55 kA for 1 s.

The 1SDA055930R1 is a four-pole fixed (F) circuit breaker with rear horizontal (HR) terminals for permanent integration into compatible low-voltage switchboards. It is supplied with four auxiliary contacts and circuit-breaker open/closed position indication, supporting status signalling and integration with switchboard monitoring and control systems.

Key Advantages

• High-current 2000 A E2N air circuit breaker for demanding low-voltage power distribution.
• PR121/P-LSIG R2000 electronic release provides overload, selective short-circuit, instantaneous and earth-fault protection.
• 65 kA rated ultimate and service short-circuit breaking capacity at 415 V AC.
• Four-pole configuration supports three-phase distribution systems requiring neutral switching.
• Fixed construction provides robust permanent integration into low-voltage switchboards.
• Rear horizontal terminals support convenient connection to switchboard busbar systems.
• Earth-fault protection adds protection against faults involving earth or protective conductors.
• Four auxiliary contacts and open/closed position indication support monitoring, signalling and control functions.

Key Features

• ABB SACE Emax E2N 2000 air circuit breaker.
• 2000 A rated current.
• 4-pole configuration.
• PR121/P-LSIG R2000 electronic overcurrent release.
• LSIG functions provide long-time, short-time, instantaneous and earth-fault protection.
• Fixed (F) circuit-breaker version.
• Rear horizontal (HR) main terminals.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 65 kA Icu and Ics at 400/415 V AC.
• 55 kA rated short-time withstand current for 1 s.
• 42 kA rated short-time withstand current for 3 s.
• Four auxiliary contacts with open/closed circuit-breaker position indication.

Comprehensive LSIG Protection for 2000 A Power Distribution

The ABB SACE Emax E2N 2000 provides dependable switching and electronic protection for high-current low-voltage distribution circuits. Its PR121/P-LSIG release combines long-time protection against sustained overloads, short-time protection for selective fault coordination, instantaneous protection against severe short circuits and earth-fault protection for faults involving earth or protective conductors.

With a 2000 A current rating, four-pole fixed construction and 65 kA short-circuit breaking capacity at 415 V AC, the 1SDA055930R1 is well suited to main incoming and high-current feeder duties. Rear horizontal terminals facilitate integration with suitable switchboard busbars, while the four-pole arrangement allows switching of the neutral conductor in three-phase plus neutral distribution systems.

Typical Applications

• Industrial low-voltage distribution switchboards.
• Main incoming circuit protection.
• Three-phase and neutral power distribution systems.
• High-current feeder protection.
• Power distribution centres and fixed switchgear assemblies.
• Manufacturing and process plants.
• Commercial and infrastructure electrical distribution.
• Distribution systems requiring overload, selective short-circuit and earth-fault protection.