1SDA056021R1 ABB E2S2000 PR122/P-LSIG 2000 A 3-Pole Fixed Air Circuit Breaker

Why Choose the ABB E2S2000 PR122/P-LSIG 1SDA056021R1 Air Circuit Breaker?

The ABB 1SDA056021R1 is a high-performance SACE Emax E2S2000 air circuit breaker designed for reliable switching and protection in low-voltage electrical distribution systems. As part of the ABB New Emax product range, this three-pole fixed circuit breaker has a rated uninterrupted current of 2000 A and incorporates the advanced PR122/P-LSIG electronic overcurrent release.

The PR122/P-LSIG trip unit provides comprehensive long-time, short-time, instantaneous and earth-fault protection, helping protect electrical installations against overloads, short circuits and earth faults. The E2S performance class combines high short-circuit breaking capability with configurable electronic protection for demanding industrial, commercial and infrastructure power distribution applications.

With a rated operational voltage of up to 690 V AC, a three-pole configuration and fixed construction with rear flat horizontal terminals, the E2S2000 is well suited to high-current switchboards and main distribution panels. It provides rated ultimate and service short-circuit breaking capacities of 85 kA at 220–440 V AC and 65 kA at 500–690 V AC.

Key Advantages

• Heavy-duty ABB SACE Emax air circuit breaker for low-voltage power distribution.
• 2000 A rated uninterrupted current for high-current electrical systems.
• PR122/P-LSIG electronic release provides comprehensive overcurrent and earth-fault protection.
• LSIG functions provide long-time, short-time, instantaneous and earth-fault protection.
• 85 kA breaking capacity at 220–440 V AC.
• Rated operational voltage of up to 690 V AC.
• Fixed construction with rear flat horizontal terminals for switchboard installation.

Key Features

• ABB SACE Emax E2S2000 air circuit breaker.
• 2000 A rated uninterrupted current.
• Three-pole configuration.
• PR122/P-LSIG electronic overcurrent release.
• Integrated LSIG protection functions.
• 85 kA Icu/Ics at 220–440 V AC.
• 65 kA Icu/Ics at 500–690 V AC.
• Rated short-time withstand current of 65 kA for 1 s and 50 kA for 3 s.
• 1000 V rated insulation voltage and 12 kV impulse withstand voltage.
• Fixed circuit-breaker construction with rear horizontal terminals.
• Fitted with four auxiliary contacts and circuit-breaker open/closed position indication.

Reliable Protection for Low-Voltage Distribution Systems

Air circuit breakers such as the ABB SACE Emax E2S2000 provide dependable switching and protection for high-current low-voltage distribution circuits. Their high breaking capacity enables substantial prospective fault currents to be interrupted safely, helping protect switchboards, conductors, transformers and connected electrical equipment from damaging electrical faults.

The PR122/P-LSIG electronic release provides long-time overload protection, short-time protection for selective coordination, instantaneous short-circuit protection and earth-fault protection. Combined with the E2S2000 frame and fixed three-pole construction, the 1SDA056021R1 is particularly suitable for industrial switchboards and main distribution systems requiring comprehensive, high-performance circuit protection.

Typical Applications

• Industrial low-voltage switchboards.
• Main electrical distribution panels.
• Incoming mains and feeder protection.
• Manufacturing and process industry electrical systems.
• Commercial and infrastructure power distribution.
• Transformer and installation protection.
• High-current three-pole distribution circuits.