1SDA059261R1 ABB E2N 1000 PR121/P-LSI 1000A 3P Fixed Air Circuit Breaker

Why Choose the ABB E2N 1000 PR121/P-LSI 1000A 3P Fixed Air Circuit Breaker?

The ABB 1SDA059261R1 is a high-performance SACE Emax E2N air circuit breaker designed for protection and switching of low-voltage AC power distribution systems. This configuration combines a 1000 A rated current, three-pole construction and fixed installation with the ABB PR121/P-LSI electronic overcurrent release, providing dependable protection for demanding industrial and commercial electrical installations.

Part of the ABB SACE Emax family, the E2N 1000 is engineered for high-current distribution applications where reliable overload and short-circuit protection are essential. The PR121/P-LSI release provides long-time, short-time and instantaneous protection functions, enabling the breaker to protect conductors and downstream equipment against a range of overcurrent conditions.

This model is a three-pole fixed circuit breaker with rear horizontal terminals. It has a rated uninterrupted current of 1000 A, rated operational voltage up to 690 V AC, and an ultimate short-circuit breaking capacity of 65 kA at 415 V AC, making it suitable for robust low-voltage switchboards and power distribution assemblies.

Key Advantages

• High-capacity 1000 A SACE Emax air circuit breaker for low-voltage distribution.
• PR121/P-LSI electronic trip unit provides long-time, short-time and instantaneous overcurrent protection.
• 65 kA ultimate breaking capacity at 415 V AC for demanding fault conditions.
• Three-pole configuration designed for three-phase AC distribution systems.
• Fixed construction provides a robust solution for permanent switchboard installations.
• Rear horizontal terminals support practical integration into power distribution assemblies.
• ABB SACE Emax design provides high mechanical and electrical endurance for industrial service.

Key Features

• ABB SACE Emax E2N frame.
• 1000 A rated current.
• Three-pole construction.
• Fixed (F) circuit-breaker version.
• PR121/P-LSI electronic release.
• Long-time, short-time and instantaneous protection functions.
• 690 V AC rated operational voltage.
• 1000 V rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 65 kA Icu at 415 V AC.
• 55 kA short-time withstand current for 1 s.
• Rear flat horizontal main terminals.

Reliable Protection for High-Current Power Distribution

Air circuit breakers such as the ABB SACE Emax E2N provide switching and protection at the heart of low-voltage distribution systems. By continuously monitoring current through the electronic trip unit, the breaker can interrupt abnormal conditions before excessive overload or short-circuit current causes serious damage to conductors, switchgear or connected equipment.

The PR121/P-LSI release fitted to this E2N 1000 provides long-time overload, short-time short-circuit and instantaneous short-circuit protection. Combined with the breaker's 65 kA breaking capacity at 415 V AC and fixed three-pole construction, this makes 1SDA059261R1 well suited to main and feeder protection duties in industrial switchboards and power distribution installations.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Main incoming and feeder circuit protection.
• Manufacturing and process plant electrical systems.
• Commercial and infrastructure power distribution.
• Motor control centre and switchboard incomers.
• Generator and transformer secondary distribution systems.