1SDA072842R1 ABB E1.2B 1600 Ekip Dip LSI 4p WMP Air Circuit Breaker

Why Choose the ABB 1SDA072842R1 E1.2B 1600 Ekip Dip LSI 4p WMP Air Circuit Breaker?

The ABB 1SDA072842R1 is an Emax 2 E1.2B 1600 four-pole air circuit breaker moving part designed for dependable protection and switching in low-voltage electrical distribution systems. Part of the advanced ABB Emax 2 air circuit breaker range, this withdrawable configuration combines a rated uninterrupted current of 1600 A with an electronic Ekip Dip LSI protection release.

The E1.2B frame provides a rated ultimate short-circuit breaking capacity of 42 kA at common low-voltage AC system voltages up to 690 V. Its Ekip Dip LSI electronic trip unit provides long-time, short-time and instantaneous protection functions, helping protect electrical installations against overload and short-circuit conditions while providing adjustable protection settings for system coordination.

Configured as a four-pole withdrawable moving part (WMP), the 1SDA072842R1 is designed for Emax 2 withdrawable installations where convenient inspection, servicing and replacement are important. The breaker is rated for operation up to 690 V AC and is supplied with four auxiliary change-over contacts for circuit-breaker position and status signalling.

Key Advantages

• High-performance ABB Emax 2 E1.2B air circuit breaker for low-voltage power distribution.
• 1600 A rated uninterrupted current for high-current electrical systems.
• Four-pole configuration provides switching and protection across four conductors.
• Ekip Dip LSI electronic trip unit provides long-time, short-time and instantaneous protection.
• 42 kA ultimate short-circuit breaking capacity for robust fault protection.
• Withdrawable moving-part design supports maintenance and operational flexibility in switchboards.

Key Features

• ABB Emax 2 E1.2B frame.
• 1600 A rated uninterrupted current (Iu).
• Four-pole air circuit breaker configuration.
• Ekip Dip LSI electronic release.
• Long-time, short-time and instantaneous protection functions.
• 42 kA Icu short-circuit breaking capacity at 400–690 V AC.
• 42 kA Ics service short-circuit breaking capacity.
• 42 kA short-time withstand current for 1 s.
• Withdrawable moving-part construction for Emax 2 switchgear installations.
• Four auxiliary change-over contacts for breaker status signalling.

Reliable Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB Emax 2 E1.2B provide switching and protection for high-current low-voltage distribution circuits. The Ekip Dip LSI electronic release continuously supports protection against overload, delayed short-circuit and instantaneous short-circuit conditions, helping isolate electrical faults before they can cause extensive damage to downstream equipment or distribution infrastructure.

The withdrawable Emax 2 architecture is particularly suited to industrial switchboards and power distribution assemblies where maintainability and continuity of service are important. The moving part can be used with the corresponding Emax 2 fixed section, allowing the breaker to be withdrawn from the switchgear for servicing or replacement while supporting organised power-distribution system design.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Commercial and infrastructure electrical distribution.
• Transformer secondary protection and switching.
• Generator and utility distribution systems.
• High-current machinery and process plant distribution panels.