1SDA056153R1 ABB E3N3200 PR121/P-LSI 3200A 4P Fixed Air Circuit Breaker

Why Choose the ABB E3N3200 PR121/P-LSI 3200A 4P Fixed Air Circuit Breaker?

The ABB 1SDA056153R1 is a high-performance SACE Emax E3N air circuit breaker (ACB) designed for switching and protection in demanding low-voltage electrical distribution systems. Part of the ABB New Emax product group, this four-pole fixed circuit breaker combines a 3200 A rated uninterrupted current with the PR121/P-LSI R3200 electronic overcurrent release for dependable protection of industrial, commercial and infrastructure power networks.

The E3N3200 provides long-time, short-time and instantaneous protection through its LSI trip functionality. The PR121/P electronic release protects against overload, short-time delayed short-circuit and instantaneous short-circuit conditions, with adjustable protection characteristics that support coordination and selectivity with other protective devices. This LSI configuration does not include integrated earth-fault protection.

With a rated uninterrupted current of 3200 A, operation on low-voltage systems up to 690 V AC and an ultimate short-circuit breaking capacity of 65 kA at 415 V AC, the E3N3200 provides robust protection for high-current distribution systems. This version features a four-pole fixed configuration with rear flat horizontal terminals, four auxiliary contacts and circuit-breaker open/closed position indication for permanent integration into low-voltage switchgear.

Key Advantages

• High-performance ABB SACE Emax E3N air circuit breaker for high-current low-voltage distribution.
• 3200 A rated uninterrupted current for demanding electrical installations.
• Four-pole fixed configuration suitable for three-phase systems requiring neutral switching.
• PR121/P-LSI R3200 electronic overcurrent release for overload and short-circuit protection.
• LSI functionality provides long-time, short-time and instantaneous protection.
• 65 kA Icu and Ics across the specified 220–690 V AC range.
• 65 kA short-time withstand current for 1 s and 3 s supports robust system coordination.
• Rear flat horizontal terminals provide a practical connection arrangement for fixed switchboard installations.

Key Features

• ABB SACE Emax E3N3200 air circuit breaker.
• 3200 A rated uninterrupted current.
• Four-pole construction.
• Fixed circuit-breaker configuration.
• PR121/P-LSI R3200 electronic overcurrent release.
• Long-time, short-time and instantaneous (LSI) protection functions.
• Designed for low-voltage systems up to 690 V AC.
• 65 kA Icu at 220–690 V AC.
• 65 kA Ics at 220–690 V AC.
• 65 kA Icw for 1 s and 3 s.
• Rear flat horizontal terminals.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Optional motor operating mechanism.

Reliable High-Current Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB SACE Emax E3N3200 provide switching, isolation and overcurrent protection at critical points within high-current low-voltage distribution systems. The E3 frame accommodates substantial continuous currents, while the N performance level provides dependable short-circuit interruption and short-time withstand capability for industrial switchboards, transformer-fed networks and other high-capacity distribution applications.

The PR121/P-LSI electronic trip unit provides long-time overload, short-time delayed overcurrent and instantaneous short-circuit protection. Combined with the fixed Emax construction and 65 kA short-circuit performance, this configuration provides a robust solution for installations requiring high continuous-current capability, protection selectivity and dependable fault interruption.

Typical Applications

• Main incoming circuit breakers in high-current low-voltage switchboards.
• Industrial power distribution systems.
• Commercial and infrastructure electrical installations.
• Manufacturing and process plants.
• Transformer-fed distribution systems.
• Generator distribution and protection systems.
• High-current distribution feeder protection.
• Four-pole distribution systems requiring neutral switching.
• Fixed low-voltage switchgear and power distribution assemblies.