1SDA073205R1 ABB E4.2V 4000 Ekip Touch LSI 4P Air Circuit Breaker

Why Choose the ABB 1SDA073205R1 E4.2V 4000 Ekip Touch LSI Air Circuit Breaker?

The ABB 1SDA073205R1 is a high-performance SACE Emax 2 E4.2V air circuit breaker moving part engineered for protection and switching in demanding low-voltage power-distribution systems. This four-pole withdrawable unit is rated at 4000 A and incorporates an Ekip Touch LSI solid-state electronic trip unit, providing long-time overload, short-time selective short-circuit and instantaneous short-circuit protection.

The Ekip Touch release combines configurable electronic protection with an intuitive touch interface, allowing protection parameters and operating information to be accessed directly from the trip unit. The LSI protection profile is particularly suitable for distribution systems requiring coordinated overload and short-circuit protection without integrated ground-fault protection.

The E4.2V performance level provides exceptional fault-interruption capability, with an 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. Combined with its 4000 A rating and withdrawable architecture, this makes the breaker suitable for major incomers and high-current feeders in installations with very high prospective fault levels.

Key Advantages

• High-capacity 4000 A SACE Emax 2 air circuit breaker for major low-voltage distribution systems.
• Ekip Touch LSI electronic trip unit provides long-time, short-time and instantaneous protection.
• Exceptional 150 kA ultimate short-circuit breaking capacity at 440 V AC.
• 100 kA short-time withstand current for 1 s supports demanding selective protection schemes.
• Touch interface provides convenient access to protection settings and operating information.
• Withdrawable moving-part construction facilitates inspection, servicing and replacement in compatible SACE Emax 2 switchgear.

Key Features

• ABB SACE Emax 2 E4.2V air circuit breaker moving part.
• 4000 A rated uninterrupted current.
• Four-pole (4P) configuration.
• 690 V AC rated voltage.
• Ekip Touch LSI solid-state electronic protection release.
• Long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection.
• Overload release adjustable from 1600–4000 A.
• Short-time delayed short-circuit release adjustable from 2400–40000 A.
• Instantaneous short-circuit release adjustable from 6000–60000 A.
• 150 kA Icu at 440 V AC.
• 100 kA Icw for 1 s.
• Four change-over auxiliary contacts.
• Circuit-breaker open/closed indication.
• IP30 degree of protection.
• Optional motor drive capability.

High-Performance LSI Protection for 4000 A Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 protect major low-voltage distribution circuits against damaging overloads and short circuits while providing dependable high-current switching and isolation. The Ekip Touch LSI release combines long-time overload protection, short-time delayed protection for selective coordination and instantaneous protection against severe short circuits.

The E4.2V platform is designed for installations with exceptionally high prospective fault currents. Its combination of a 4000 A current rating, 150 kA Icu at 440 V AC and 100 kA Icw for 1 s provides substantial interruption and withstand capability, while the withdrawable architecture allows the moving part to be removed from its corresponding fixed chassis for inspection, maintenance or replacement.

Typical Applications

• Main incoming protection for high-capacity low-voltage switchboards.
• Industrial distribution systems with very high prospective fault currents.
• Commercial and infrastructure power-distribution systems.
• Transformer secondary protection.
• Generator and critical power-distribution systems where LSI protection is appropriate.
• High-current feeders requiring selective overload and short-circuit protection.