1SDA055914R1 ABB E2N 1600 PR121/P-LSIG 1600 A 4-Pole Withdrawable Air Circuit Breaker

Why Choose the ABB E2N 1600 PR121/P-LSIG Air Circuit Breaker?

The ABB E2N 1600 PR121/P-LSIG, order code 1SDA055914R1, is a high-current 1600 A four-pole withdrawable air circuit breaker from the ABB SACE Emax family. Designed for low-voltage power distribution, it combines robust switching capability with comprehensive electronic protection for demanding industrial, commercial and infrastructure switchboards.

Its PR121/P-LSIG R1600 electronic overcurrent release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection. This LSIG configuration helps protect cables, busbars and connected equipment against a broad range of electrical faults while supporting selective coordination within the distribution network.

With a rated current of 1600 A, a four-pole configuration and withdrawable execution, the E2N 1600 is particularly suitable for four-wire distribution systems where maintainability and comprehensive protection are important. The withdrawable design allows the breaker moving part to be isolated and removed from the appropriate ABB SACE Emax fixed part for inspection, servicing or replacement.

Key Advantages

• High-current 1600 A air circuit breaker for demanding low-voltage distribution.
• PR121/P-LSIG electronic trip unit provides comprehensive electronic protection.
• Combines long-time, short-time, instantaneous and earth-fault protection.
• Four-pole withdrawable construction supports convenient isolation and servicing.
• LSIG functionality supports selective and coordinated protection of distribution networks.
• Part of the established ABB SACE Emax E2N air circuit breaker platform.

Key Features

• ABB SACE Emax E2N series.
• 1600 A rated current.
• Four-pole configuration.
• Withdrawable execution.
• PR121/P-LSIG R1600 electronic overcurrent release.
• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated earth-fault protection.
• Designed for use with the appropriate ABB SACE Emax fixed part.
• Suitable for high-current low-voltage power distribution.

Comprehensive LSIG Protection with Withdrawable Construction

The ABB SACE Emax E2N platform is engineered for switching and protecting high-current low-voltage distribution circuits. Its electronic trip technology monitors current conditions and initiates breaker operation when configured thresholds are exceeded, helping protect conductors, busbars and connected equipment against overloads, short circuits and earth faults.

The PR121/P-LSIG release combines four principal protection functions in a single electronic trip unit. Together with the four-pole withdrawable construction, the 1SDA055914R1 provides comprehensive circuit protection while facilitating maintenance and replacement in switchboards where serviceability and continuity of operation are important considerations.

Typical Applications

• Industrial low-voltage switchboards.
• Main power distribution panels.
• Manufacturing and process plants.
• Commercial and infrastructure electrical distribution.
• Transformer secondary distribution systems.
• Four-wire distribution systems requiring earth-fault protection.