1SDA056440R1 ABB E3H2000 PR121/P-LI 2000A 4P Fixed Air Circuit Breaker

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

The ABB E3H2000 PR121/P-LI, order code 1SDA056440R1, 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-LI R2000 electronic overcurrent release.

Designed for fixed installation with rear horizontal terminals, the E3H2000 provides robust permanent integration into compatible low-voltage switchboards and distribution assemblies. Its H short-circuit performance level provides a rated ultimate short-circuit breaking capacity of 100 kA at 400 V AC and 85 kA at 690 V AC, making it suitable for installations with substantial prospective fault currents.

The PR121/P-LI electronic release provides long-time overload and instantaneous short-circuit protection, with an overload setting range of 800–2000 A and an instantaneous short-circuit adjustment range of 3000–30000 A. Combined with its 2000 A rating, four-pole architecture and 690 V AC rated operational voltage, the 1SDA056440R1 is well suited to main incomers, high-current feeders and critical industrial 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-LI electronic overcurrent release provides long-time and instantaneous protection.
• Fixed construction with rear horizontal terminals for permanent switchboard integration.
• High H-level short-circuit performance with 100 kA Icu at 400 V AC.
• Four auxiliary change-over contacts and open/closed position indication support monitoring and control.

Key Features

• ABB SACE Emax E3H air circuit breaker.
• 2000 A rated uninterrupted current.
• Four-pole configuration.
• PR121/P-LI R2000 electronic overcurrent release.
• LI protection functions for long-time overload and instantaneous short-circuit protection.
• Overload release adjustment range of 800–2000 A.
• Instantaneous short-circuit adjustment range of 3000–30000 A.
• H short-circuit performance level.
• Rated ultimate short-circuit breaking capacity of 100 kA at 400 V AC.
• Rated ultimate short-circuit breaking capacity of 85 kA at 690 V AC.
• Fixed version with rear horizontal terminals.
• Four auxiliary change-over contacts for circuit-breaker status signalling.

Reliable LI 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-LI electronic release combines long-time overload protection with instantaneous short-circuit protection, helping safeguard busbars, cables and connected electrical equipment.

The fixed construction and rear horizontal terminals support permanent integration into suitably designed switchboards. With its 2000 A rating, four-pole architecture and H-level short-circuit performance, the E3H2000 provides robust switching and protection for demanding industrial and infrastructure power distribution systems.

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 high short-circuit performance and LI overcurrent protection.