1SDA125185R1 ABB E4.3V 3200 Ekip Aware LSI 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB 1SDA125185R1 E4.3V 3200 Ekip Aware Air Circuit Breaker?

The ABB 1SDA125185R1, product designation E4.3V 3200 Ekip Aware LSI 4p FHR, is a high-performance four-pole fixed air circuit breaker (ACB) designed for protection and switching in demanding low-voltage power distribution systems. As part of the advanced ABB SACE Emax 3 series, it combines the E4.3V high-performance breaker frame with the intelligent Ekip Aware electronic trip unit for accurate protection, monitoring and power-system management.

With a rated current of 3200 A, the breaker provides LSI protection functions covering long-time overload, short-time short-circuit and instantaneous short-circuit protection. The E4.3V performance level provides a rated ultimate short-circuit breaking capacity of 150 kA at 440 V AC and a rated short-time withstand current of 100 kA for 1 s, making it suitable for high-fault-level distribution systems.

The 1SDA125185R1 is supplied in a four-pole fixed configuration with orientable rear terminals (HR). This arrangement supports robust integration into high-current switchboards while the Ekip Aware platform provides sophisticated electronic protection and monitoring capabilities for modern industrial, commercial, infrastructure and critical-power installations.

Key Advantages

• High-performance ABB SACE Emax 3 air circuit breaker for demanding low-voltage distribution.
• 3200 A rated current for high-power electrical systems.
• Advanced Ekip Aware electronic trip unit for protection and monitoring.
• LSI protection functions covering overload, short-time and instantaneous faults.
• High 150 kA ultimate breaking capacity at 440 V AC.
• 100 kA short-time withstand current for 1 s.
• Four-pole fixed configuration for permanent switchboard installation.
• Orientable rear terminals (HR) provide flexible high-current connection options.

Key Features

• ABB SACE Emax 3 E4.3V series.
• 3200 A rated current.
• Ekip Aware LSI electronic protection release.
• Long-time (L) overload protection.
• Short-time (S) short-circuit protection.
• Instantaneous (I) short-circuit protection.
• Four-pole (4P) construction.
• Fixed (F) circuit-breaker execution.
• Orientable rear terminals (HR).
• 150 kA Icu at 440 V AC.
• 100 kA Icw for 1 s.
• Designed for high-current low-voltage power distribution and switchboard applications.

High-Performance Protection with Ekip Aware

The ABB Ekip Aware platform brings intelligent electronic protection and monitoring to the SACE Emax 3 range. In this LSI configuration, the release protects electrical installations against overloads and short circuits using configurable long-time, short-time and instantaneous protection functions, helping improve selectivity and continuity throughout low-voltage distribution networks.

The E4.3V performance level is designed for installations with particularly high prospective fault currents. With an ultimate short-circuit breaking capacity of 150 kA at 440 V AC and a short-time withstand capability of 100 kA for 1 s, the 1SDA125185R1 provides robust protection for major incoming feeders and high-power distribution circuits.

Typical Applications

• Industrial low-voltage power distribution systems.
• Main incoming and bus-coupler switchboard circuits.
• High-power commercial building distribution.
• Manufacturing and process-industry installations.
• Data centres and critical-power infrastructure.
• Utility and infrastructure electrical systems.
• Generator and transformer distribution circuits.
• OEM switchgear and high-current power-distribution assemblies.