1SDA071465R1 ABB Emax 2 E1.2C 1250A Ekip Touch LSI 4P Air Circuit Breaker

Why Choose the ABB 1SDA071465R1 Emax 2 Air Circuit Breaker?

The ABB 1SDA071465R1 is a high-performance SACE Emax 2 E1.2C air circuit breaker (ACB) designed for advanced 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 LSI electronic trip unit for configurable overload, short-time and instantaneous short-circuit protection.

As part of the ABB SACE Emax 2 series, the E1.2C is engineered to provide dependable fault interruption and selective protection in demanding industrial and commercial installations. The Ekip Touch LSI solid-state release provides long-time, short-time and instantaneous protection functions, while its touchscreen interface supports intuitive configuration, commissioning and access to electrical information.

With a rated uninterrupted current of 1250 A, rated operational voltage of 690 V AC, rated ultimate short-circuit breaking capacity of 50 kA at 440 V AC and rated short-time withstand current of 42 kA for 1 s, the 1SDA071465R1 provides robust protection for demanding low-voltage networks. This version features a fixed four-pole configuration with front terminals for straightforward integration into switchboards and distribution assemblies.

Key Advantages

• High-performance 1250 A air circuit breaker for low-voltage power distribution.
• 50 kA ultimate short-circuit breaking capacity at 440 V AC.
• 42 kA rated short-time withstand current for 1 s supports effective protection coordination and selectivity.
• Advanced Ekip Touch LSI electronic trip unit provides long-time, short-time and instantaneous protection.
• Touchscreen interface simplifies protection configuration, commissioning and monitoring.
• Four-pole fixed configuration with front terminals supports efficient 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.
• 12 kV rated impulse withstand voltage.
• 50 kA Icu at 440 V AC.
• 42 kA Icw for 1 s.
• Ekip Touch LSI solid-state electronic release.
• Long-time overload, short-time delayed and instantaneous short-circuit protection.
• Touchscreen interface for intuitive trip-unit configuration and operation.
• Fixed four-pole construction with neutral pole rated at 100% of Iu.
• Front terminals for main circuit connections.
• Supplied with four auxiliary change-over contacts.
• Open/closed circuit-breaker position indication.
• Optional motor operating mechanism for remote operation.
• IP30 degree of protection.

Advanced Selective Protection for Low-Voltage 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 1SDA071465R1 combines a 1250 A continuous-current rating with 50 kA short-circuit breaking capability at 440 V AC and 42 kA short-time withstand capability for 1 s, making it suitable for demanding main and distribution circuits.

The Ekip Touch LSI trip unit adds short-time delayed protection to the long-time and instantaneous functions, enabling more sophisticated protection coordination than an LI-only release. This makes the breaker particularly useful where selectivity between upstream and downstream protective devices is important, while the touchscreen interface provides convenient access to protection configuration and operating information.

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 requiring selective short-circuit protection.
• Data centres and critical-power installations.
• Low-voltage switchgear and controlgear assemblies.