1SDA072043R1 ABB E1.2N 250 Ekip Dip LSIG 3p WMP Air Circuit Breaker

Why Choose the ABB E1.2N 250 Ekip Dip LSIG 3p WMP Air Circuit Breaker?

The ABB E1.2N 250 Ekip Dip LSIG 3p WMP, order code 1SDA072043R1, is a withdrawable Emax 2 air circuit breaker (ACB) designed for protection and switching in low-voltage electrical distribution systems. As part of the ABB SACE Emax 2 series, this three-pole breaker combines a 250 A rated uninterrupted current with an Ekip Dip LSIG electronic trip unit for dependable overload, short-circuit and earth-fault protection.

The E1.2N platform combines compact construction with high electrical and mechanical performance. Its Ekip Dip LSIG solid-state release provides long-time, short-time, instantaneous and ground-fault protection functions, enabling comprehensive protection of feeders and distribution circuits while supporting selective coordination within low-voltage networks.

With a rated uninterrupted current of 250 A, a three-pole configuration and an ultimate short-circuit breaking capacity of 66 kA at 400–440 V AC, the E1.2N 250 is suitable for industrial and commercial switchboards. The WMP configuration is the moving part of the withdrawable circuit breaker, allowing convenient isolation, inspection and maintenance when installed with the appropriate fixed part.

Key Advantages

• Compact ABB Emax 2 air circuit breaker for low-voltage power distribution.
• 250 A rated uninterrupted current for feeder and distribution applications.
• 66 kA ultimate short-circuit breaking capacity at 400–440 V AC.
• Three-pole configuration for three-phase electrical systems.
• Electronic Ekip Dip LSIG trip unit.
• Long-time, short-time, instantaneous and ground-fault protection.
• Withdrawable moving-part construction supports convenient maintenance and isolation.
• High mechanical and electrical endurance for demanding switchboard applications.

Key Features

• ABB SACE Emax 2 E1.2N air circuit breaker.
• 250 A rated uninterrupted current.
• Three-pole (3P) configuration.
• 690 V AC rated operational voltage.
• 66 kA Icu at 400–440 V AC.
• 50 kA Ics at 400–440 V AC.
• 50 kA short-time withstand current for 1 s.
• Ekip Dip LSIG electronic protection release.
• Integrated overload, short-time, instantaneous and earth-fault protection.
• Withdrawable moving part (WMP) for switchboard applications.
• Four auxiliary change-over contacts.
• Open/closed circuit-breaker position indication.

Reliable Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB Emax 2 E1.2N provide switching, isolation and protection for electrical distribution circuits. By continuously monitoring current through the Ekip Dip electronic release, the breaker can respond to overloads, delayed and instantaneous short circuits and ground faults, helping protect cables, switchgear and connected equipment against potentially damaging electrical conditions.

The withdrawable moving-part configuration is particularly useful in switchboards where maintainability and continuity of service are important. When paired with the appropriate fixed part, the breaker can be moved between operating, test and disconnected positions, simplifying inspection and maintenance while the Ekip Dip LSIG release provides adjustable electronic protection for coordinated electrical distribution systems.

Typical Applications

• Low-voltage distribution switchboards.
• Industrial power distribution systems.
• Commercial building electrical distribution.
• Incoming and outgoing feeder protection.
• Motor control and process installations.
• Manufacturing and production facilities.
• Infrastructure electrical systems.
• Withdrawable switchgear assemblies requiring convenient maintenance and isolation.