ABB 1SDA071191R1 E4.2N 4000 Ekip Dip LI 3p F HR 4000A 3P 66kA Air Circuit Breaker

The ABB 1SDA071191R1 — catalog number E4.2N 4000 Ekip Dip LI 3p F HR — is a 4000 A, 3-pole fixed-mount air circuit breaker from the SACE Emax2 E4.2 series, delivering a breaking capacity of 66 kA at 400 V AC for demanding low-voltage power distribution applications. Equipped with the Ekip Dip LI electronic trip unit, this open-type ACB provides precise long-time (L) and instantaneous (I) overcurrent protection in a robust HR (High Rated) frame, making it an authoritative choice for main switchboards, incoming feeders, and bus-coupler positions in industrial and infrastructure installations.

Technical Specifications

Certifications & Standards

• IEC: Designed and tested in accordance with IEC 60947-2 for low-voltage circuit breakers
• CE: Conforms to applicable European Union directives for electrical equipment
• UL 2799: Listed to UL 2799, covering electrical systems for electric drive vehicles and industrial switchgear applications
• ATEX: Suitable for use in environments with explosive atmosphere requirements per ATEX directive
• CSA: Certified to Canadian Standards Association requirements for industrial electrical equipment
• VDE: Tested and verified by VDE (Verband der Elektrotechnik), Germany's leading electrical engineering standards body
• RoHS: Compliant with the Restriction of Hazardous Substances Directive (2011/65/EU)
• REACH: Compliant with EU REACH regulation (EC No 1907/2006) on chemical substance safety

Applications & Use Cases

• Main incoming and bus-coupler positions in low-voltage main distribution boards (MDBs)
• Feeder protection in large industrial plants, data centres, and infrastructure facilities
• Generator and transformer outgoing protection where high rated current and breaking capacity are critical
• Switchgear panels requiring a fixed-mount, open-type ACB with electronic trip unit flexibility
• Oil & gas, petrochemical, and mining installations requiring ATEX-compliant switchgear