ABB 1SDA071821R1 E4.2N 4000 Ekip Dip LI 4p F HR 4000A 4P 66kA Air Circuit Breaker

The ABB 1SDA071821R1 E4.2N 4000 Ekip Dip LI 4p F HR is a 4000 A, 4-pole fixed-mount air circuit breaker from the SACE Emax2 series, delivering a breaking capacity of 66 kA at 400 V AC. Engineered for high-current low-voltage power distribution and protection in demanding industrial and infrastructure applications, this ACB features the Ekip Dip LI trip unit for precise overcurrent and short-circuit protection with DIP-switch adjustable settings. The fixed (F) frame with high-rupturing (HR) designation makes it ideal for main incoming, bus-coupler, and feeder protection in switchgear assemblies and distribution panels.

Technical Specifications

Certifications & Standards

• CE: Conforms to applicable European Union directives for the CE marking
• IEC: Designed and tested in accordance with IEC standards for low-voltage switchgear
• IEC 60947: Compliant with IEC 60947 series — low-voltage switchgear and controlgear
• UL 2799: Listed under UL 2799 for electrical system safety
• ATEX: Certified for use in potentially explosive atmospheres per ATEX directive
• CSA: Certified by the Canadian Standards Association
• VDE: Tested and certified by VDE (Verband der Elektrotechnik) to German/European standards
• RoHS: Compliant with EU Directive 2011/65/EU (Restriction of Hazardous Substances)
• REACH: Compliant with EU REACH regulation (EC No 1907/2006) on chemical substances
• EU Directive 2011/65/EU: RoHS2 directive compliance confirmed
• Amendment 2015/863: Compliant with the RoHS3 amendment expanding restricted substances list
• WEEE: Registered under the Waste Electrical and Electronic Equipment directive for responsible end-of-life recycling

Applications & Use Cases

• Main incoming protection in large-scale low-voltage switchgear panels and motor control centres (MCCs)
• Bus-coupler and bus-tie switching in high-current distribution systems
• Feeder protection for industrial plants, data centres, hospitals, and infrastructure facilities
• Generator and transformer secondary protection requiring high breaking capacity at 400 V AC
• Mining, oil & gas, and heavy industry installations where ATEX compliance is required
• Applications demanding precise, field-adjustable overcurrent and short-circuit protection via DIP-switch Ekip trip unit