1SDA071477R1 ABB E1.2N 1250 Ekip G Touch LSIG 4p F F Air Circuit Breaker

Why Choose the ABB E1.2N 1250 Ekip G Touch LSIG 4p F F Air Circuit Breaker?

The ABB E1.2N 1250 Ekip G Touch LSIG 4p F F, order code 1SDA071477R1, is a high-performance four-pole air circuit breaker (ACB) designed for protection, switching and generator-related power management in low-voltage electrical distribution systems. As part of the advanced ABB SACE Emax 2 E1.2 series, it combines a compact fixed breaker platform with the sophisticated Ekip G Touch LSIG electronic trip unit.

Rated at 1250 A, this E1.2N breaker features a fixed installation configuration with front terminals. Its Ekip G Touch LSIG solid-state release provides long-time overload, short-time selective short-circuit, instantaneous short-circuit and earth-fault protection, while the Ekip G functionality extends the platform for generator protection and management applications.

The E1.2N performance level provides an ultimate short-circuit breaking capacity of 66 kA at 400–440 V AC and 50 kA at 500–690 V AC. With a rated operational voltage of 690 V AC and a rated service short-circuit breaking capacity of 50 kA, the 1SDA071477R1 is engineered for demanding industrial, commercial and generator-based electrical distribution systems.

Key Advantages

• Advanced ABB SACE Emax 2 air circuit breaker for low-voltage power distribution.
• 1250 A rated current for high-capacity electrical circuits.
• Four-pole configuration for three-phase systems with neutral.
• Ekip G Touch LSIG electronic trip unit with advanced protection and monitoring functions.
• Provides overload, selective short-circuit, instantaneous and earth-fault protection.
• Ekip G functionality is designed to support generator protection and power-management applications.
• Ultimate short-circuit breaking capacity up to 66 kA.
• Fixed construction with front terminals for switchboard integration.

Key Features

• ABB SACE Emax 2 E1.2N air circuit breaker.
• 1250 A rated uninterrupted current.
• 4-pole construction.
• Fixed-mounted configuration.
• Front terminals.
• Ekip G Touch LSIG solid-state electronic release.
• Long-time overload protection.
• Short-time selective short-circuit protection.
• Instantaneous short-circuit protection.
• Integrated earth-fault protection.
• Touch interface for protection configuration and electrical monitoring.
• 690 V AC rated operational voltage.
• Supplied with four auxiliary contacts and circuit-breaker open/closed position indication.

Advanced Generator and Distribution Protection

The Ekip G Touch LSIG electronic trip unit combines comprehensive circuit protection with functions intended for generator applications. Its L, S, I and G protection stages respond to sustained overloads, selective short circuits, severe instantaneous faults and earth faults, helping protect generators, conductors and connected distribution equipment.

The ABB SACE Emax 2 platform is designed to operate as more than a conventional circuit breaker, supporting modern power-management and automation architectures. The Ekip G Touch release makes this configuration particularly suitable for installations where generator protection, electrical monitoring and dependable high-current switching are required within the same low-voltage distribution system.

Typical Applications

• Generator protection and distribution systems.
• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Manufacturing and process plants.
• Commercial buildings and infrastructure.
• Power control centres and critical electrical installations.