1SDA071464R1 ABB Emax 2 E1.2C 1250A Ekip Touch LI 4P Air Circuit Breaker

Why Choose the ABB 1SDA071464R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA071464R1 is a high-performance SACE Emax 2 E1.2C air circuit breaker (ACB) designed for reliable protection and control of low-voltage electrical distribution systems. Rated at 1250 A, this fixed four-pole circuit breaker combines ABB’s compact E1.2 frame with the advanced Ekip Touch LI electronic trip unit for configurable overload and instantaneous short-circuit protection.

As part of the ABB SACE Emax 2 series, the E1.2C is engineered to deliver high short-circuit performance while maintaining compact switchboard dimensions. The Ekip Touch LI solid-state release provides long-time overload and instantaneous short-circuit protection, with a touchscreen interface that simplifies configuration, commissioning and access to electrical information.

With a rated uninterrupted current of 1250 A, rated operational voltage of 690 V AC and rated ultimate short-circuit breaking capacity of 50 kA at 400–440 V AC, the 1SDA071464R1 provides robust protection for demanding low-voltage installations. This version features a fixed four-pole configuration with front terminals, making it suitable for main incomers, transformer secondary protection and distribution circuits within industrial and commercial switchboards.

Key Advantages

• High-performance 1250 A air circuit breaker for low-voltage power distribution.
• 50 kA ultimate short-circuit breaking capacity at 400–440 V AC.
• 42 kA rated short-time withstand current for 1 s supports effective protection coordination.
• Advanced Ekip Touch LI electronic trip unit provides configurable overload and instantaneous short-circuit protection.
• Touchscreen interface simplifies protection configuration, commissioning and monitoring.
• Four-pole fixed configuration with front terminals supports straightforward switchboard integration.

Key Features

• ABB SACE Emax 2 E1.2C air circuit breaker.
• 1250 A rated uninterrupted current.
• 690 V AC rated operational voltage.
• 1000 V AC rated insulation voltage.
• 50 kA Icu at 400–440 V AC.
• 42 kA Icu at 500–690 V AC.
• 42 kA Icw for 1 s.
• Ekip Touch LI solid-state electronic release.
• Long-time overload and instantaneous short-circuit protection.
• Large touchscreen interface for intuitive trip-unit operation.
• Compatible with ABB Ekip Connect for configuration and interrogation.
• Fixed four-pole construction.
• Front terminals for main circuit connections.
• Supplied with four auxiliary contacts and circuit-breaker open/closed position indication.
• Compact 280 × 296 × 183 mm enclosure dimensions.

Advanced Protection for Low-Voltage Power Distribution

Air circuit breakers such as the ABB SACE Emax 2 E1.2C protect important low-voltage distribution circuits against damaging overload and short-circuit conditions. The 1SDA071464R1 combines a 1250 A continuous-current rating with 50 kA short-circuit breaking capability at 400–440 V AC and a 42 kA short-time withstand rating for 1 s, making it suitable for demanding main and distribution circuits.

The Ekip Touch LI trip unit provides electronic long-time overload and instantaneous short-circuit protection through an intuitive touchscreen interface. This LI configuration is particularly suited to installations that require advanced configurable electronic protection without integrated short-time delayed or ground-fault functions.

Typical Applications

• Main incoming protection for low-voltage switchboards.
• Industrial electrical distribution systems.
• Commercial building power distribution.
• Transformer secondary protection.
• Manufacturing and process facilities.
• Distribution feeders and sub-main circuits.
• Infrastructure and critical-power installations.
• Low-voltage switchgear and controlgear assemblies.