1SDA072302R1 ABB E2.2N 1250 Ekip Dip LSI 3-Pole Air Circuit Breaker

Why Choose the ABB 1SDA072302R1 E2.2N 1250 Ekip Dip LSI Air Circuit Breaker?

The ABB 1SDA072302R1 is a SACE Emax 2 E2.2N air circuit breaker designed for reliable protection and switching in demanding low-voltage electrical distribution systems. This three-pole withdrawable moving-part configuration has a rated uninterrupted current of 1250 A and incorporates the Ekip Dip LSI solid-state electronic trip unit.

The Ekip Dip LSI release provides long-time overload, short-time delayed short-circuit and instantaneous short-circuit protection. Its adjustable protection functions allow the breaker to be coordinated with downstream protective devices, making it suitable for industrial, commercial, transformer, generator and infrastructure distribution systems where selective overcurrent protection is required.

The E2.2N 1250 provides a rated ultimate short-circuit breaking capacity of 66 kA at 400 V AC, with the E2.2N platform maintaining 66 kA breaking capability through 690 V AC. The withdrawable moving-part design connects to a separate chassis part, supporting efficient inspection, servicing and replacement in compatible ABB SACE Emax 2 switchgear.

Key Advantages

• High-performance 1250 A Emax 2 air circuit breaker for low-voltage power distribution.
• Ekip Dip LSI electronic trip unit with adjustable protection settings.
• Provides long-time, short-time and instantaneous protection.
• 66 kA ultimate short-circuit breaking capacity at 400 V AC.
• Rated operational voltage up to 690 V AC.
• Three-pole configuration for three-phase electrical distribution systems.
• Withdrawable moving-part construction supports efficient maintenance and replacement.
• Four change-over auxiliary contacts provide circuit-breaker status signalling.

Key Features

• ABB SACE Emax 2 E2.2N air circuit breaker.
• 1250 A rated current.
• Three-pole configuration.
• Ekip Dip LSI solid-state electronic release.
• Long-time overload protection (L).
• Short-time delayed short-circuit protection (S).
• Instantaneous short-circuit protection (I).
• Overload protection adjustable from 0.4–1 × In.
• Short-time protection adjustable from 0.6–10 × In.
• Instantaneous protection adjustable from 1.5–15 × In.
• 66 kA ultimate breaking capacity at 400 V AC.
• 1000 V AC rated insulation voltage.
• 12 kV rated impulse withstand voltage.
• IP30 degree of protection.

Selective LSI Protection for Low-Voltage Power Distribution

The ABB Emax 2 E2.2N combines high-current switching with adjustable electronic protection for complex low-voltage networks. Its Ekip Dip LSI release protects against sustained overloads, provides a short-time delayed response for selective short-circuit coordination and delivers instantaneous operation against severe fault currents, helping protect cables, busbars, switchgear and connected equipment.

The adjustable short-time function makes this LSI configuration particularly useful where coordination between upstream and downstream protection devices is required. Combined with the E2.2N's 66 kA breaking capability and withdrawable architecture, the 1SDA072302R1 provides a maintainable protection solution for demanding industrial and commercial electrical distribution systems.

Typical Applications

• Main low-voltage electrical distribution switchboards.
• Industrial power distribution networks.
• Manufacturing and process-industry switchgear.
• Commercial building electrical infrastructure.
• Transformer secondary distribution systems.
• Generator and plant electrical distribution.
• Critical-power and infrastructure installations.