1SDA071877R1 ABB E6.2V 4000 Ekip G Touch LSIG 4p FHR Air Circuit Breaker

Why Choose the ABB E6.2V 4000 Ekip G Touch LSIG 4p FHR Air Circuit Breaker?

The ABB 1SDA071877R1 is a high-performance Emax 2 air circuit breaker (ACB) designed for demanding generator and low-voltage power-distribution applications. Identified as the E6.2V 4000 Ekip G Touch LSIG 4p FHR, this four-pole fixed circuit breaker combines a 4000 A rated uninterrupted current with ABB’s Ekip G Touch LSIG electronic protection release.

As part of the ABB SACE Emax 2 E6.2V series, this breaker delivers exceptionally high short-circuit performance together with generator-oriented electronic protection. The Ekip G Touch LSIG release provides long-time overload, short-time short-circuit, instantaneous short-circuit and earth-fault protection, making it particularly suitable for generator protection and critical power-distribution systems.

The E6.2V performance level provides an ultimate short-circuit breaking capacity of 150 kA at 400–440 V AC, 130 kA at 500–525 V AC and 100 kA at 690 V AC, together with a rated short-time withstand current of 100 kA for 1 s. Its four-pole fixed construction and rear flat horizontal terminals provide a robust configuration for permanent integration into high-capacity switchboards.

Key Advantages

• High-performance ABB Emax 2 E6.2V air circuit breaker for generator and power-distribution applications.
• 4000 A rated uninterrupted current for large industrial and infrastructure installations.
• 150 kA Icu at 400–440 V AC for systems with exceptionally high prospective fault currents.
• 100 kA Icu at 690 V AC for dependable high-voltage low-voltage distribution protection.
• 100 kA Icw for 1 s supports demanding selective protection strategies.
• Ekip G Touch LSIG electronic trip unit with overload, short-circuit and integrated earth-fault protection.
• Four-pole configuration for switching and protection of three phases and neutral.
• Fixed construction with rear flat horizontal terminals for permanent switchboard integration.

Key Features

• ABB SACE Emax 2 E6.2V series.
• 4000 A rated uninterrupted current.
• 690 V AC rated voltage.
• 150 kA Icu at 400–440 V AC.
• 130 kA Icu at 500–525 V AC.
• 100 kA Icu at 690 V AC.
• 100 kA rated short-time withstand current for 1 s.
• Ekip G Touch LSIG electronic protection release.
• Long-time overload, short-time, instantaneous and earth-fault protection functions.
• 1600–4000 A overload release adjustment range.
• 2400–40000 A short-time delayed short-circuit adjustment range.
• 6000–60000 A instantaneous short-circuit adjustment range.
• 4-pole fixed circuit breaker configuration.
• Rear flat horizontal main terminals.
• Four auxiliary change-over contacts and circuit-breaker open/closed indication.
• Suitable for 690 V IT networks.

Advanced Generator and High-Capacity Distribution Protection

The ABB Emax 2 E6.2V platform is engineered for high-current electrical systems where substantial short-circuit performance and selective protection are required. With a 4000 A current rating, breaking capacity reaching 150 kA and a 100 kA one-second withstand rating, the E6.2V 4000 is suited to critical distribution positions exposed to very high prospective fault currents.

The Ekip G Touch LSIG electronic trip unit adds protection functionality tailored to generator and power-distribution applications. Its long-time, short-time, instantaneous and earth-fault functions help protect generators, transformers, busbars, cables and connected equipment while supporting selective coordination, continuity of service and integration into sophisticated low-voltage power systems.

Typical Applications

• Generator protection and generator-based power systems.
• Main incomer protection in high-current low-voltage switchboards.
• Industrial power distribution systems.
• Transformer and installation protection.
• Manufacturing and process plants.
• Data centres and critical power installations.
• Utility and infrastructure electrical distribution.
• High-current installations requiring integrated earth-fault protection.