1SDA056737R1 ABB E3L2000 PR121/P-LSI 2000 A 3-Pole Air Circuit Breaker

Why Choose the ABB E3L2000 PR121/P-LSI Air Circuit Breaker?

The ABB 1SDA056737R1 is a high-performance SACE Emax E3L air circuit breaker designed for switching and protection in high-current low-voltage electrical distribution systems. Identified as E3L2000PR121/P-LSI, this three-pole withdrawable circuit breaker combines a 2000 A rated current with ABB's PR121/P-LSI electronic overcurrent release for comprehensive circuit protection.

As part of the ABB SACE Emax / New Emax E3 range, the E3L2000 is engineered for demanding industrial, commercial and infrastructure power distribution applications. Its L short-circuit performance level provides an ultimate short-circuit breaking capacity of 130 kA at 400 V AC, while the withdrawable construction allows the breaker moving part to be disconnected from its fixed section for inspection, servicing and maintenance.

The integrated PR121/P-LSI electronic trip unit provides long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) protection. With a rated operational voltage of up to 690 V AC, three-pole configuration and 2000 A rated uninterrupted current, the 1SDA056737R1 is well suited to main incoming, feeder and distribution protection duties in substantial low-voltage installations.

Key Advantages

• High-capacity 2000 A air circuit breaker for low-voltage power distribution.
• Three-pole configuration for three-phase electrical systems.
• PR121/P-LSI electronic trip unit provides long-time, short-time and instantaneous overcurrent protection.
• High 130 kA Icu at 400 V AC ultimate short-circuit breaking capacity.
• Withdrawable construction supports convenient servicing and maintenance.
• Rated for operation at voltages up to 690 V AC.
• Electronic protection enables accurate and dependable response to overload and short-circuit conditions.
• Part of ABB's proven SACE Emax circuit breaker range for demanding power distribution applications.

Key Features

• ABB SACE Emax E3L series.
• 2000 A rated operational and uninterrupted current.
• Three-pole circuit breaker configuration.
• PR121/P-LSI electronic overcurrent release.
• Long-time overload, short-time and instantaneous short-circuit protection.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 130 kA Icu at 400 V AC.
• 130 kA Ics at 400 V AC.
• 85 kA Icu at 690 V AC.
• Withdrawable circuit breaker moving-part design.
• 15,000-operation mechanical endurance.
• Motor operating mechanism available as an option.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB E3L2000 provide switching and protection for high-current low-voltage distribution systems. The circuit breaker interrupts abnormal current conditions to help protect cables, busbars, switchgear and connected equipment against damage caused by overloads and short circuits.

The PR121/P-LSI electronic release provides long-time overload, short-time and instantaneous short-circuit protection. Combined with the E3L's high breaking performance and withdrawable construction, this makes the 1SDA056737R1 suitable for distribution boards, switchboards and industrial installations where dependable electrical protection, selective coordination and straightforward maintenance are required.

Typical Applications

• Main incoming circuit protection in low-voltage switchboards.
• Industrial power distribution systems.
• Transformer and generator protection systems.
• Protection of distribution feeders and busbar systems.
• Large commercial and infrastructure electrical installations.
• Manufacturing plants and process facilities.
• High-current switchgear and electrical distribution installations.