1SDA056441R1 ABB E3H2000 PR121/P-LSI 2000A 4P Fixed Air Circuit Breaker

Why Choose the ABB E3H2000 PR121/P-LSI 2000A 4P Fixed Air Circuit Breaker?

The ABB E3H2000 PR121/P-LSI, order code 1SDA056441R1, is a high-performance SACE Emax air circuit breaker designed for protection and switching in demanding low-voltage electrical distribution systems. This E3H breaker has a rated current of 2000 A, a four-pole configuration and ABB's PR121/P-LSI R2000 electronic overcurrent release.

Designed for fixed installation with rear horizontal terminals, the E3H2000 provides robust permanent integration into compatible low-voltage switchboards and power distribution assemblies. Its E3H construction is intended for applications requiring high-current switching, dependable circuit protection and a fixed breaker arrangement.

The PR121/P-LSI electronic release provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. Combined with its 2000 A rating, four-pole architecture and fixed construction, the 1SDA056441R1 is well suited to main incomers, high-current feeders and critical industrial power distribution circuits.

Key Advantages

• High-performance 2000 A SACE Emax air circuit breaker for demanding low-voltage distribution.
• Four-pole configuration for applications requiring switching and protection of three phases and neutral.
• PR121/P-LSI electronic overcurrent release provides long-time, short-time and instantaneous protection.
• Fixed construction provides robust permanent integration into compatible switchboards.
• Rear horizontal terminals provide the specified main-circuit connection arrangement.
• Four auxiliary contacts and open/closed position indication support circuit-breaker monitoring.

Key Features

• ABB SACE Emax E3H air circuit breaker.
• 2000 A rated current.
• Four-pole configuration.
• PR121/P-LSI R2000 electronic overcurrent release.
• LSI protection functions for long-time, short-time and instantaneous overcurrent protection.
• Fixed-version construction for permanent switchboard installation.
• Rear horizontal main terminals.
• Four auxiliary contacts for status signalling.
• Integrated circuit-breaker open/closed position indication.
• Product net dimensions of 530 × 418 × 302 mm.
• Mechanical durability of 20,000 cycles.
• Electrical durability of 9,000 cycles.

Reliable LSI Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3H2000 protect high-current electrical distribution systems against damaging overload and short-circuit conditions. The PR121/P-LSI electronic release combines long-time overload, short-time short-circuit and instantaneous short-circuit protection functions, providing coordinated LSI protection for important low-voltage distribution circuits.

The fixed construction and rear horizontal terminals support permanent integration into suitably designed switchboards. With its 2000 A rating and four-pole architecture, the E3H2000 provides dependable switching and protection for demanding three-phase power distribution systems where neutral-pole switching is also required.

Typical Applications

• Main incoming protection for industrial low-voltage switchboards.
• High-current feeder and distribution circuit protection.
• Manufacturing plants and process facilities.
• Commercial and infrastructure power distribution systems.
• Motor control centres and large electrical distribution assemblies.
• Fixed switchgear requiring coordinated overload and short-circuit protection.