ABB 1SDA072811R1 E1.2C 1250 Ekip Dip LI 4p WMP 1250A 4P 50kA Withdrawable Power Circuit Breaker

The ABB 1SDA072811R1, catalog number E1.2C 1250 Ekip Dip LI 4p WMP, is a 1250 A 4-pole withdrawable power circuit breaker from the SACE Emax2 E1.2 series, delivering a breaking capacity of 50 kA at 400 V AC. Designed for transformer, generator, and installation protection, it combines the Ekip Dip LI trip unit with a withdrawable moving-part (WMP) chassis for simplified maintenance and rapid replacement in demanding industrial power distribution systems.

Technical Specifications

Certifications & Standards

• CE: Conforms to applicable European Union directives for electrical equipment
• RoHS: Compliant with EU Directive 2011/65/EU on restriction of hazardous substances
• Amendment 2015/863: Compliant with the updated RoHS annex (EU) 2015/863 restricting additional substances
• REACH: Meets EU REACH regulation (EC No 1907/2006) requirements for chemical substances
• IEC: Designed and tested in accordance with IEC standards for low-voltage switchgear
• IEC 60947: Compliant with IEC 60947 series for low-voltage switchgear and controlgear
• UL 2799: Evaluated to UL 2799 standard for electrical systems
• ATEX: Assessed for use in potentially explosive atmospheres per ATEX directive
• CSA: Certified to Canadian Standards Association requirements
• VDE: Tested and approved by VDE (Verband der Elektrotechnik) to German electrical standards
• WEEE: Registered under the Waste Electrical and Electronic Equipment directive for responsible disposal

Applications & Use Cases

• Transformer and generator protection in main low-voltage distribution boards
• Incomer and bus coupler protection in industrial power distribution systems
• Installation protection in large commercial and heavy-industry facilities
• Retrofitting and maintenance-friendly deployments thanks to the WMP withdrawable chassis
• Control panels requiring high breaking capacity (50 kA) at 400 V AC with selective coordination