1SDA072811R1 ABB E1.2C 1250 Ekip Dip LI 4P Air Circuit Breaker

Why Choose the ABB 1SDA072811R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA072811R1 is a high-performance SACE Emax 2 E1.2C air circuit breaker designed for reliable protection and control of low-voltage electrical distribution systems. Configured as an E1.2C 1250 Ekip Dip LI 4p WMP, this four-pole withdrawable moving part combines a 1250 A rated current with ABB's Ekip Dip LI solid-state electronic protection release.

As part of the ABB SACE Emax 2 air circuit breaker series, the E1.2C is engineered for demanding industrial, commercial and infrastructure power distribution applications. The Ekip Dip LI trip unit provides long-time overload and instantaneous short-circuit protection, with straightforward adjustment designed to deliver dependable circuit protection without the additional complexity of more advanced trip-unit interfaces.

The E1.2C performance level provides a rated ultimate short-circuit breaking capacity of 50 kA, while the breaker is rated for operation at up to 690 V AC. Its 1250 A rating, four-pole arrangement and withdrawable construction make the 1SDA072811R1 well suited to substantial switchboard applications where dependable fault interruption, isolation and maintainability are required.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for low-voltage power distribution.
• 1250 A rated current for substantial industrial and commercial electrical loads.
• 50 kA breaking capacity for dependable interruption of high fault currents.
• Ekip Dip LI solid-state electronic protection release.
• Integrated long-time overload and instantaneous short-circuit protection.
• Simple protection configuration without a touchscreen interface.
• Four-pole configuration for three-phase systems requiring neutral switching.
• Withdrawable moving-part construction supports convenient isolation, inspection and maintenance.

Key Features

• ABB SACE Emax 2 E1.2C series.
• 1250 A rated current.
• 4-pole configuration.
• Ekip Dip LI electronic trip unit.
• 50 kA breaking capacity.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• Long-time overload protection.
• Instantaneous short-circuit protection.
• Four change-over auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Optional motor operating mechanism.
• IP30 degree of protection.
• Withdrawable moving-part design for use with the corresponding Emax 2 fixed part.

Reliable Circuit Protection and Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 E1.2C protect low-voltage electrical distribution systems against potentially damaging overload and short-circuit conditions while providing dependable switching and isolation. With its 1250 A rated current and 50 kA breaking capacity, this E1.2C configuration provides robust protection for substantial switchboards, feeders and connected electrical equipment.

The Ekip Dip LI electronic trip unit combines long-time overload protection with instantaneous short-circuit protection in a straightforward and robust configuration. Together with the Emax 2 withdrawable architecture, this provides a practical solution for installations requiring reliable overcurrent protection, high electrical endurance and convenient breaker isolation for inspection or maintenance.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical distribution.
• Manufacturing and process facilities.
• Infrastructure and utility installations.
• Incoming and outgoing high-current switchboard feeders.
• Electrical distribution circuits requiring LI overcurrent protection.
• Switchboards requiring four-pole withdrawable circuit breaker assemblies.