1SDA072671R1 ABB E1.2N 250 Ekip Dip LI 4p WMP Air Circuit Breaker

Why Choose the ABB E1.2N 250 Ekip Dip LI 4p WMP Air Circuit Breaker?

The ABB 1SDA072671R1 is a SACE Emax 2 E1.2N air circuit breaker (ACB) designed for reliable protection and switching in low-voltage electrical distribution systems. Rated at 250 A, this four-pole breaker combines ABB’s compact E1.2N frame with an Ekip Dip LI electronic trip unit providing long-time overload and instantaneous short-circuit protection.

As part of the ABB SACE Emax 2 air circuit breaker series, the E1.2N offers compact dimensions, dependable electrical performance and flexible switchboard integration. Its four-pole configuration enables switching of all three phases and the neutral conductor, making it particularly suitable for three-phase four-wire distribution networks.

The 1SDA072671R1 is a four-pole withdrawable mobile part (WMP) rated at 250 A. The E1.2N performance level provides an ultimate short-circuit breaking capacity of 66 kA at 440 V AC and a rated short-time withstand current of 50 kA for 1 second, providing robust protection for commercial, industrial and infrastructure power distribution applications.

Key Advantages

• 250 A rated uninterrupted current for low-voltage distribution and feeder protection.
• 66 kA ultimate short-circuit breaking capacity at 440 V AC.
• 50 kA short-time withstand current for 1 second supports selective protection strategies.
• Ekip Dip LI electronic trip unit provides dependable overload and instantaneous short-circuit protection.
• Four-pole configuration enables switching and isolation of the neutral conductor together with the three phases.
• Compact E1.2 frame helps optimise switchboard space.
• Withdrawable mobile-part construction facilitates isolation, inspection and maintenance.

Key Features

• ABB SACE Emax 2 E1.2N series.
• 250 A rated uninterrupted current.
• Four-pole configuration.
• N performance level.
• 66 kA Icu at 440 V AC.
• 50 kA Icw for 1 second.
• Ekip Dip LI electronic trip unit.
• LI protection provides long-time overload and instantaneous short-circuit protection.
• No integrated short-time delayed or earth-fault protection in the LI configuration.
• Withdrawable mobile part (WMP) configuration.
• Designed for use with the corresponding Emax 2 E1.2 fixed part.
• Suitable for three-phase four-wire low-voltage distribution systems.

Compact Four-Pole Circuit Protection

The ABB SACE Emax 2 E1.2N provides compact air circuit breaker protection for low-voltage networks requiring dependable interruption of overload and short-circuit currents. With a rated current of 250 A, 66 kA ultimate breaking capacity at 440 V AC and 50 kA short-time withstand capability, this configuration provides substantial fault protection within ABB’s compact E1.2 frame.

The Ekip Dip LI electronic trip unit provides long-time overload and instantaneous short-circuit protection. Its straightforward protection architecture is suited to applications where adjustable electronic circuit protection is required without integrated short-time delayed or earth-fault functions, while the four-pole arrangement provides simultaneous switching capability for phase and neutral conductors.

Typical Applications

• Low-voltage main and sub-distribution switchboards.
• Three-phase four-wire electrical distribution systems.
• Commercial building power distribution.
• Industrial feeder and distribution protection.
• Infrastructure and utility installations.
• Transformer secondary distribution.
• Panelboards requiring four-pole isolation.
• Electrical systems requiring withdrawable breaker construction for easier maintenance.