1SDA070973R1 ABB E2.2H 1250 Ekip Dip LSIG 3p FHR Air Circuit Breaker

Why Choose the ABB E2.2H 1250 Ekip Dip LSIG 3p FHR Air Circuit Breaker?

The ABB E2.2H 1250 Ekip Dip LSIG 3p FHR, order code 1SDA070973R1, is a high-performance SACE Emax 2 air circuit breaker (ACB) designed for protection and switching in demanding low-voltage AC power distribution systems. Part of the ABB Emax 2 E2.2 series, it combines a 1250 A rating with the high-breaking-capacity E2.2H performance class and an Ekip Dip electronic trip unit.

This model is a fixed, three-pole circuit breaker with horizontal rear terminals equipped with an Ekip Dip LSIG solid-state electronic release. Its LSIG protection functions provide long-time overload, short-time delayed short-circuit, instantaneous short-circuit and integrated earth-fault protection, enabling comprehensive protection of cables, busbars, transformers and connected distribution equipment.

The E2.2H 1250 provides a rated ultimate short-circuit breaking capacity of 100 kA at 415 V AC and 85 kA at 690 V AC. Combined with its 1250 A rating, four auxiliary contacts, trip signalling and horizontal rear connections, the 1SDA070973R1 is particularly well suited to critical industrial, infrastructure and high-capacity switchboard applications.

Key Advantages

• High-performance ABB SACE Emax 2 E2.2H air circuit breaker.
• 1250 A rated current for substantial low-voltage distribution loads.
• Ekip Dip LSIG electronic trip unit provides comprehensive configurable circuit protection.
• LSIG functionality combines overload, short-time, instantaneous and earth-fault protection.
• 100 kA Icu at 415 V AC provides exceptional fault-interruption capability.
• 85 kA Icu at 690 V AC supports demanding higher-voltage distribution networks.
• Fixed three-pole construction with horizontal rear terminals facilitates switchboard busbar integration.
• Four auxiliary contacts plus breaker status and trip signalling support monitoring and control integration.

Key Features

• ABB SACE Emax 2 E2.2H series.
• 1250 A rated current.
• Three-pole configuration.
• Fixed circuit-breaker construction.
• Horizontal rear terminals.
• Ekip Dip LSIG solid-state electronic release.
• Long-time L overload protection.
• Short-time delayed S short-circuit protection.
• Instantaneous I short-circuit protection.
• Integrated G earth-fault protection.
• 500–1250 A overload protection setting range.
• 1875–18750 A instantaneous short-circuit setting range.
• 100 kA Icu at 415 V AC.
• 85 kA Icu at 690 V AC.
• Four auxiliary contacts.
• Circuit-breaker open/closed position indication.
• Trip signalling contact for protection operation.

Advanced Selective and Earth-Fault Protection for High-Fault Systems

Air circuit breakers such as the ABB Emax 2 E2.2H protect low-voltage electrical networks by interrupting current when hazardous overload, short-circuit or earth-fault conditions occur. The Ekip Dip LSIG electronic release combines long-time, short-time delayed, instantaneous and earth-fault protection functions, allowing the breaker to provide comprehensive protection while supporting selective coordination with other devices throughout the distribution system.

The E2.2H performance class is engineered for installations with substantial prospective fault currents, delivering 100 kA Icu at 415 V AC and 85 kA Icu at 690 V AC. Horizontal rear terminals facilitate switchboard busbar connections, while the fixed construction, auxiliary contacts and status signalling make the 1SDA070973R1 a robust solution for main incomers and high-current feeders.

Typical Applications

• Low-voltage main distribution switchboards.
• Industrial power distribution systems.
• Main incomer and high-current feeder protection.
• Selective electrical distribution systems.
• Applications requiring integrated earth-fault protection.
• Installations with high prospective short-circuit currents.
• Transformer secondary distribution switchboards.
• Manufacturing and process plant switchgear.
• Commercial and critical infrastructure power distribution.
• OEM switchboards requiring horizontal rear busbar connections.