1SDA072817R1 ABB Emax 2 E1.2C 1250 Ekip G Touch LSIG 4-Pole Air Circuit Breaker

Why Choose the ABB 1SDA072817R1 Emax 2 E1.2C 1250 Air Circuit Breaker?

The ABB 1SDA072817R1 is a SACE Emax 2 E1.2C air circuit breaker engineered for generator and low-voltage power distribution protection. Configured as the E1.2C 1250 Ekip G Touch LSIG 4p WMP, this four-pole withdrawable moving part combines a 1250 A rated uninterrupted current with ABB's advanced Ekip G Touch LSIG solid-state electronic protection release.

The Ekip G Touch LSIG release provides long-time overload, short-time short-circuit, instantaneous short-circuit and ground-fault protection, with the Ekip G platform specifically developed to support generator protection applications. Adjustable electronic protection functions allow the breaker to be coordinated with the electrical system while providing comprehensive protection against overload, short-circuit and earth-fault conditions.

The E1.2C performance level provides an ultimate short-circuit breaking capacity of 50 kA at 400 V AC and a rated short-time withstand current of 42 kA for 1 s. The breaker is rated at 690 V AC and uses a four-pole withdrawable moving-part construction with main-circuit connection through a separate chassis part, supporting convenient inspection and maintenance.

Key Advantages

• 1250 A rated uninterrupted current for substantial generator and distribution loads.
• Four-pole configuration for switching and protection across four conductors.
• Advanced Ekip G Touch LSIG electronic protection release for generator-oriented applications.
• Long-time, short-time, instantaneous and ground-fault protection in one electronic trip unit.
• 50 kA ultimate short-circuit breaking capacity at 400 V AC.
• 42 kA short-time withstand current for 1 s supports selective protection strategies.
• Withdrawable moving-part construction supports efficient switchboard inspection, servicing and replacement.

Key Features

• ABB SACE Emax 2 E1.2 air circuit breaker platform.
• 1250 A rated uninterrupted current.
• Four-pole configuration.
• C short-circuit performance level.
• Ekip G Touch LSIG solid-state electronic protection release.
• Long-time (L) overload protection.
• Short-time (S) short-circuit protection.
• Instantaneous (I) short-circuit protection.
• Integrated ground-fault (G) protection.
• 50 kA Icu at 400 V AC.
• 42 kA Icw for 1 s.
• Rated voltage of 690 V AC.
• Overload release adjustment range of 500–1250 A.
• Short-time delayed short-circuit adjustment range of 750–12500 A.
• Instantaneous short-circuit adjustment range of 1875–18750 A.
• Four auxiliary change-over contacts.
• IP30 degree of protection.
• Withdrawable moving part (WMP) configuration.

Generator-Focused LSIG Protection for Low-Voltage Power Systems

The ABB SACE Emax 2 E1.2C provides switching and electronic protection for low-voltage generator and distribution systems. Its Ekip G Touch release monitors electrical conditions and initiates circuit interruption when configured protection thresholds are exceeded, helping protect generators, conductors, switchgear and connected equipment against overload, short-circuit and ground-fault conditions.

The Ekip G Touch LSIG release combines long-time overload, short-time delayed short-circuit, instantaneous short-circuit and ground-fault protection within ABB's generator-oriented Ekip G platform. Together with the 1250 A E1.2C frame, 50 kA breaking capacity at 400 V AC and withdrawable architecture, the ABB 1SDA072817R1 provides a robust solution for generator switchboards and demanding low-voltage distribution applications.

Typical Applications

• Generator protection and generator switchboards.
• Low-voltage main distribution switchboards.
• Industrial power generation and distribution systems.
• Manufacturing and process facilities.
• Commercial and infrastructure standby power systems.
• Distribution systems requiring integrated ground-fault protection.