1SDA055675R1 ABB E1B 1600 PR122/P-LI 1600A 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E1B 1600 PR122/P-LI 1600A Air Circuit Breaker?

The ABB E1B 1600 PR122/P-LI, order code 1SDA055675R1, is a high-performance 1600 A four-pole fixed air circuit breaker designed for protection and switching in demanding low-voltage electrical distribution systems. Part of the proven ABB SACE Emax / New Emax range, it combines the E1B frame's robust circuit-breaking performance with a PR122/P-LI electronic overcurrent release.

The fitted PR122/P-LI R1600 electronic trip unit provides long-time overload and instantaneous short-circuit protection. This LI configuration offers dependable protection against sustained overcurrents and severe short circuits while providing the advanced monitoring and setting capabilities associated with the PR122/P electronic release platform.

This model is supplied in a fixed four-pole configuration with horizontal rear terminals for permanent installation within compatible low-voltage switchboards. Its four-pole design supports three-phase four-wire systems requiring neutral switching, while the E1B performance level provides a rated ultimate short-circuit breaking capacity of 42 kA at 415 V AC and a short-time withstand current of 42 kA for 1 s.

Key Advantages

• High-current 1600 A air circuit breaker for demanding low-voltage distribution systems.
• Four-pole configuration supports three-phase systems requiring neutral switching.
• PR122/P-LI R1600 electronic trip unit provides electronic overcurrent protection.
• LI protection functions cover long-time overload and instantaneous short-circuit conditions.
• 42 kA Icu at 415 V AC provides substantial short-circuit interruption capability.
• 42 kA Icw for 1 s supports demanding high-current distribution applications.
• Fixed construction provides a robust solution for permanent switchboard installation.
• Horizontal rear terminals provide a practical connection arrangement for switchboard busbars.

Key Features

• ABB SACE Emax E1B series.
• 1600 A rated uninterrupted current.
• Four-pole configuration.
• PR122/P-LI R1600 electronic overcurrent release.
• Long-time (L) overload protection.
• Instantaneous (I) short-circuit protection.
• 42 kA rated ultimate short-circuit breaking capacity at 415 V AC.
• 42 kA rated short-time withstand current for 1 s.
• Fixed installation configuration.
• Horizontal rear terminals (HR).
• Electronic trip technology for accurate overcurrent protection.
• Suitable for high-current three-phase four-wire distribution systems.
• Designed for permanent integration into low-voltage switchboards.
• Part of ABB's established SACE Emax air circuit breaker platform.

Electronic LI Protection for 1600A Power Distribution

Air circuit breakers such as the ABB SACE Emax E1B are designed to protect high-current electrical distribution systems by interrupting abnormal current conditions before cables, busbars, switchgear and connected equipment can sustain serious damage. With a rated uninterrupted current of 1600 A, an Icu of 42 kA at 415 V AC and an Icw of 42 kA for 1 s, the E1B 1600 is suited to demanding main distribution and feeder applications.

The PR122/P-LI electronic release combines long-time overload protection with instantaneous short-circuit protection. The long-time function protects against sustained overcurrents, while the instantaneous function provides rapid interruption when severe short-circuit currents occur. Combined with its fixed four-pole construction and horizontal rear terminals, the 1SDA055675R1 provides a practical solution for permanent three-phase four-wire switchboard installations.

Typical Applications

• Industrial low-voltage distribution switchboards.
• Main incoming circuit protection.
• High-current feeder circuit protection.
• Three-phase four-wire electrical distribution systems.
• Manufacturing plants and production facilities.
• Commercial and infrastructure power distribution.
• Generator and transformer secondary distribution systems.
• Fixed switchboard installations requiring 1600 A electronic overcurrent protection.