1SDA056162R1 ABB E3N 3200 PR121/P-LSIG 3200 A 3-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E3N 3200 PR121/P-LSIG Air Circuit Breaker?

The ABB E3N 3200 PR121/P-LSIG, order code 1SDA056162R1, is a high-performance SACE Emax air circuit breaker (ACB) moving part designed for switching and protection of high-current low-voltage power distribution systems. Part of the proven ABB SACE Emax E3 series, this three-pole withdrawable breaker combines a 3200 A rated current with the PR121/P-LSIG electronic overcurrent release for comprehensive protection in demanding industrial and commercial installations.

The PR121/P-LSIG electronic trip unit provides long-time, short-time, instantaneous and earth-fault protection functions. These LSIG functions provide comprehensive protection against overloads, short circuits and earth faults while supporting selective coordination with other protective devices throughout the electrical distribution network.

With a rated operational voltage of 690 V AC and a rated ultimate short-circuit breaking capacity of 65 kA, the E3N 3200 is suitable for demanding main distribution and high-power switchboard applications. This version is a three-pole withdrawable moving part fitted with four auxiliary contacts and circuit-breaker open/closed position indication.

Key Advantages

• Heavy-duty 3200 A air circuit breaker for high-current power distribution.
• PR121/P-LSIG electronic overcurrent release for comprehensive circuit protection.
• LSIG functions provide long-time, short-time, instantaneous and earth-fault protection.
• Three-pole withdrawable moving-part configuration supports maintainable switchgear installations.
• 65 kA short-circuit breaking capacity for demanding low-voltage applications.
• Four auxiliary contacts and open/closed position indication support switchboard monitoring and control.

Key Features

• ABB SACE Emax E3N series.
• 3200 A rated uninterrupted current.
• 690 V AC rated operational voltage.
• PR121/P-LSIG electronic trip unit.
• Integrated long-time, short-time, instantaneous and earth-fault protection.
• Three-pole construction.
• Withdrawable moving part (WMP) configuration.
• 65 kA rated ultimate short-circuit breaking capacity at 400 V AC.
• 65 kA rated short-time withstand current for 1 s.
• Four auxiliary contacts with circuit-breaker open/closed position indication.

Comprehensive Protection for High-Current Power Distribution

Air circuit breakers such as the ABB E3N protect high-current low-voltage distribution circuits by interrupting the supply when electrical conditions exceed configured protection thresholds. The electronic trip unit continuously monitors circuit conditions, helping safeguard conductors, switchgear and connected equipment against damaging overload, short-circuit and earth-fault events.

The PR121/P-LSIG release combines comprehensive electronic protection with the robust E3N breaker platform. Its withdrawable construction facilitates isolation, inspection and maintenance when installed with the corresponding fixed part, making this version particularly suitable for critical switchboards where serviceability and dependable protection are important.

Typical Applications

• Main low-voltage distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial and infrastructure electrical installations.
• Transformer-fed low-voltage distribution circuits.
• Withdrawable switchgear and high-current control assemblies.