1SDA071474R1 ABB E1.2N 1250 Ekip Touch LI 4-Pole Air Circuit Breaker

Why Choose the ABB 1SDA071474R1 E1.2N 1250 Ekip Touch LI Air Circuit Breaker?

The ABB 1SDA071474R1 is a high-performance SACE Emax 2 E1.2N air circuit breaker designed for protection and switching in demanding low-voltage power distribution systems. Rated at 1250 A, this four-pole fixed breaker combines ABB's compact E1.2N frame with the Ekip Touch LI solid-state electronic trip unit.

The Ekip Touch LI release provides long-time overload (L) and instantaneous short-circuit (I) protection. Long-time protection is adjustable from 0.4–1 × In, while instantaneous protection is adjustable from 1.5–15 × In, providing configurable electronic protection for the connected distribution circuit.

The 1SDA071474R1 is supplied in a fixed four-pole configuration with front terminals and includes four auxiliary change-over contacts plus open/closed breaker position indication. With a rated voltage of 690 V AC and an ultimate short-circuit breaking capacity of 66 kA at 400 V AC, it is suited to substantial industrial, commercial and infrastructure power distribution applications.

Key Advantages

• 1250 A SACE Emax 2 air circuit breaker for substantial low-voltage distribution circuits.
• Compact E1.2N frame combines space-efficient construction with high fault interruption capability.
• Ekip Touch LI electronic trip unit for configurable circuit protection.
• Long-time overload and instantaneous short-circuit protection functions.
• 66 kA ultimate short-circuit breaking capacity at 400 V AC.
• Touch interface provides convenient access to protection settings and operating information.
• Four-pole fixed construction with 100% neutral-pole current capability.
• Front terminals support straightforward integration into suitable low-voltage switchboards.

Key Features

• ABB SACE Emax 2 E1.2N series.
• 1250 A rated current.
• 4-pole fixed configuration.
• Front terminal connections.
• Ekip Touch LI solid-state electronic release.
• Long-time overload protection (L).
• Instantaneous short-circuit protection (I).
• Overload protection adjustable from 0.4–1 × In.
• Instantaneous protection adjustable from 1.5–15 × In.
• 690 V AC rated voltage.
• 12 kV rated impulse withstand voltage.
• 66 kA Icu at 400 V AC.
• Rated service short-circuit breaking capacity equal to 100% of Icu.
• Four auxiliary change-over contacts.
• Open/closed breaker position indication.

Reliable LI Protection for Low-Voltage Power Distribution

The ABB SACE Emax 2 E1.2N platform provides switching, isolation and electronic fault protection for low-voltage electrical distribution networks. Its compact construction, 1250 A current rating and 66 kA short-circuit breaking capability at 400 V AC make the 1SDA071474R1 suitable for switchboards where dependable protection and efficient use of installation space are important.

The Ekip Touch LI release provides adjustable long-time protection against sustained overload conditions together with instantaneous protection against severe short circuits. Combined with the breaker's four-pole fixed construction, front terminals and electronic interface, these functions make the 1SDA071474R1 a practical solution for incomers, feeders and other important low-voltage distribution circuits.

Typical Applications

• Low-voltage switchboard incomer protection.
• Industrial power distribution systems.
• Commercial building electrical distribution.
• Transformer secondary distribution systems.
• Feeder and distribution circuit protection.
• Manufacturing and process facilities.
• Infrastructure and critical electrical installations.
• Power distribution systems requiring adjustable electronic overload and instantaneous protection.