ABB 1SDA070821R1 E1.2B 1250 Ekip Dip LI 3p F F 1250A 3P 42kA Fixed Air Power Circuit Breaker

The ABB 1SDA070821R1, catalog number E1.2B 1250 Ekip Dip LI 3p F F, is a 1250A 3-pole fixed-mount air power circuit breaker from the SACE Emax2 E1.2 series, delivering a breaking capacity of 42 kA at 400 V AC for reliable protection of transformers, generators, and electrical installations. Equipped with the Ekip Dip LI (Long-time and Instantaneous) protective release unit, the E1.2B 1250 Ekip Dip LI 3p F F provides precise overcurrent coordination in demanding industrial power distribution systems. Weighing 14 kg with compact dimensions of 210 mm × 296 mm × 183 mm, this breaker is engineered for high-density control panels and switchgear assemblies.

Technical Specifications

Certifications & Standards

• CE: Complies with European Union low-voltage and electromagnetic compatibility directives
• IEC: Designed and tested in accordance with IEC 60947-2 for low-voltage circuit breakers
• UL 2799: Listed to UL 2799 standard for electrical system safety
• ATEX: Approved for use in potentially explosive atmospheres per ATEX directive
• CSA: Certified to Canadian Standards Association requirements for electrical equipment
• VDE: Tested and approved by Verband der Elektrotechnik (VDE), Germany
• RoHS: Compliant with EU Restriction of Hazardous Substances directive (2011/65/EU)
• REACH: Compliant with EU REACH regulation (EC No 1907/2006) on chemical substances
• WEEE: Registered and compliant with EU Waste Electrical and Electronic Equipment directive

Applications & Use Cases

• Main incoming protection for transformers up to and including medium-scale industrial substations
• Generator circuit breaker and back-up protection in standby and prime-power installations
• Busbar and feeder circuit protection in low-voltage main distribution switchboards (MDB)
• Industrial plant power distribution in manufacturing, oil & gas, mining, and utilities sectors
• Data centre and critical infrastructure power supply protection requiring high breaking performance