1SDA056633R1 ABB E3V2000 PR121/P-LSI 2000A 4P Fixed Air Circuit Breaker

Why Choose the ABB E3V2000 PR121/P-LSI 2000A 4P Fixed Air Circuit Breaker?

The ABB E3V2000 PR121/P-LSI, order code 1SDA056633R1, is a high-performance SACE Emax air circuit breaker (ACB) designed for switching and selective overcurrent protection in demanding low-voltage power distribution systems. Part of the ABB SACE Emax E3 series, this four-pole fixed circuit breaker combines a 2000 A current rating with the PR121/P-LSI R2000 electronic overcurrent release.

This E3V breaker is supplied in a fixed four-pole configuration with horizontal rear terminals, making it well suited to integration within industrial switchboards and high-current distribution assemblies. The PR121/P-LSI electronic release provides long-time, short-time and instantaneous protection functions, enabling coordinated protection against overloads and short-circuit conditions.

The 2000 A E3V frame is designed for demanding distribution duties where high fault-current performance, selective protection and dependable switching are required. The breaker is also fitted with four auxiliary contacts and open/closed position indication, supporting status signalling and integration with switchboard monitoring and control systems.

Key Advantages

• High-performance ABB SACE Emax E3V air circuit breaker for demanding low-voltage distribution.
• 2000 A rated current for high-current electrical installations.
• Four-pole fixed configuration suitable for industrial switchboards.
• Horizontal rear terminals for practical switchboard and busbar connections.
• PR121/P-LSI R2000 electronic overcurrent release.
• Provides long-time, short-time and instantaneous protection.
• LSI functionality supports selective coordination within multi-level distribution systems.
• Fitted with four auxiliary contacts and open/closed position indication.

Key Features

• ABB SACE Emax E3V series.
• 2000 A rated current.
• Four-pole circuit-breaker configuration.
• Fixed installation version.
• Horizontal rear terminals.
• PR121/P-LSI R2000 electronic overcurrent release.
• LSI protection functions for long-time, short-time and instantaneous overcurrent protection.
• Designed for selective protection in high-current low-voltage distribution systems.
• Fitted with four auxiliary contacts.
• Integrated open/closed circuit-breaker position indication.
• Suitable for main incomer, feeder and transformer-secondary protection duties.

Selective LSI Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E3V provide switching and electronic overcurrent protection for high-current low-voltage distribution systems. They are commonly applied where dependable protection of switchboards, busbars, cables, transformers and connected equipment is required against overload and short-circuit conditions.

The PR121/P-LSI electronic release combines long-time overload protection with short-time and instantaneous short-circuit protection. The short-time protection function provides additional flexibility for selective coordination with downstream protective devices, while the fixed construction, horizontal rear terminals and auxiliary status contacts make the 1SDA056633R1 well suited to demanding industrial power-distribution assemblies.

Typical Applications

• Industrial low-voltage switchboards and distribution systems.
• Main incoming circuit protection.
• High-current feeder protection.
• Transformer secondary protection.
• Selective protection in multi-level distribution networks.
• Manufacturing and process plants.
• Commercial and infrastructure power distribution.