ABB 1SCA022627R6940 OFAF3H450 450A 500VAC/250VDC 120kA 3-Pole HRC Fuse Link Fuselink

The ABB OFAF3H450 (SKU: 1SCA022627R6940) is a high-rupturing-capacity (HRC) fuse link rated at 450A and 500VAC / 250VDC, delivering a breaking capacity of 120 kA AC and 80 kA DC for robust short-circuit protection in industrial power distribution systems. Part of ABB's OFAF series, the OFAF3H450 is engineered to protect cables, busbars, and downstream equipment in switchgear panels, motor control centres, and heavy industrial applications where reliable overcurrent interruption is critical.

Technical Specifications

Certifications & Standards

• IEC 60269: Complies with the international standard for low-voltage fuses, ensuring reliable performance and interchangeability
• CE: Meets European Conformity requirements for electrical equipment placed on the EU market
• RoHS: Compliant with EU Directive 2011/65/EU on restriction of hazardous substances in electrical and electronic equipment
• REACH: Compliant with EU REACH regulation concerning the registration, evaluation, and authorisation of chemicals
• EU Directive 2011/65/EU & Amendment 2015/863: Fully compliant with the RoHS recast directive and its updated substance thresholds
• WEEE: Registered under the Waste Electrical and Electronic Equipment directive for proper end-of-life recycling

Applications & Use Cases

• Short-circuit and overcurrent protection in industrial switchgear and distribution boards
• Protection of cables, busbars, and transformers in motor control centres (MCCs)
• Heavy industrial environments including manufacturing plants, process industries, and utilities
• DC bus protection in renewable energy and battery storage systems (250 VDC rated)
• Replacement and upgrade of existing HRC fuse links in ABB OFAF-compatible fuse bases