1SDA071595R1 ABB E2.2S 1250 Ekip Touch LSI 4-Pole Fixed Air Circuit Breaker

Why Choose the ABB E2.2S 1250 Ekip Touch LSI 4p FHR Air Circuit Breaker?

The ABB E2.2S 1250 Ekip Touch LSI 4p FHR, order code 1SDA071595R1, is a high-performance SACE Emax 2 air circuit breaker (ACB) designed for switching and selective protection in demanding low-voltage power distribution systems. Part of the ABB Emax 2 E2.2 series, this fixed four-pole circuit breaker combines a 1250 A rated current with the advanced Ekip Touch LSI electronic trip unit.

The Ekip Touch LSI release provides long-time overload, short-time selective short-circuit and instantaneous short-circuit protection. Its large colour touchscreen interface supports intuitive configuration and access to protection information, while the short-time protection function enables improved selectivity and coordination with downstream protective devices.

The E2.2S performance level provides an ultimate short-circuit breaking capacity of 85 kA at 400–440 V AC and 66 kA at 500–690 V AC. With a rated operational voltage up to 690 V AC, fixed construction and rear horizontal terminals, the 1SDA071595R1 is well suited to main switchboards, incomers and high-current feeders in industrial, commercial and infrastructure power distribution.

Key Advantages

• High-performance ABB SACE Emax 2 air circuit breaker for demanding low-voltage distribution systems.
• 1250 A rated current for high-current industrial and commercial circuits.
• Four-pole configuration for switching and protection of three-phase systems incorporating the neutral conductor.
• Ekip Touch LSI electronic trip unit provides long-time, short-time and instantaneous protection.
• Short-time protection supports selective coordination with downstream protective devices.
• Colour touchscreen interface simplifies protection configuration and access to electrical information.
• 85 kA Icu at 400–440 V AC provides substantial short-circuit interruption capability.
• 66 kA Icu at 500–690 V AC supports demanding higher-voltage distribution networks.
• Fixed construction with rear horizontal terminals for switchboard integration.

Key Features

• ABB SACE Emax 2 E2.2S frame.
• 1250 A rated uninterrupted current.
• Four-pole fixed air circuit breaker.
• Ekip Touch LSI solid-state electronic release.
• Long-time overload protection (L).
• Short-time selective short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Colour touchscreen interface for intuitive configuration and monitoring.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• 85 kA Icu at 400–440 V AC.
• 66 kA Icu at 500–690 V AC.
• 66 kA short-time withstand current for 1 s.
• Rear horizontal main terminals.
• Four auxiliary contacts with circuit-breaker open/closed position indication.
• Designed for selective protection of high-current low-voltage distribution circuits.

Selective Protection for High-Current Power Distribution

Air circuit breakers such as the ABB Emax 2 E2.2S provide switching and protection at critical points within low-voltage electrical networks. Their combination of high continuous-current capability, substantial short-circuit interruption performance and configurable electronic protection makes them suitable for main distribution boards, transformer-fed switchgear and industrial power systems.

The Ekip Touch LSI release combines three complementary protection functions. Long-time protection responds to sustained overloads, short-time protection supports selective coordination between upstream and downstream devices, and instantaneous protection provides rapid interruption of severe short circuits. This helps protect conductors, switchgear and connected equipment while supporting continuity of supply to unaffected parts of the electrical installation.

Typical Applications

• Main low-voltage switchboards and distribution assemblies.
• Industrial main incomer protection.
• High-current feeder circuits.
• Transformer secondary distribution systems.
• Manufacturing and process facilities.
• Commercial and infrastructure electrical distribution.
• Data centres and critical power installations.
• Networks requiring selective short-circuit protection and coordination.