ABB 1SCA105475R1001 OS1250D03P 3-Pole 1250A Base Mount Switch-Disconnector Fuse

The ABB OS1250D03P (SKU: 1SCA105475R1001) is a heavy-duty 3-pole, 1250A switch-disconnector fuse from ABB's OS series, designed for safe isolation and fuse protection of power distribution circuits in industrial installations. Engineered for base mounting and compliant with IEC 60947-3, the OS1250D03P provides reliable load isolation and overcurrent protection in demanding control panel and switchgear environments. With a robust steel enclosure rated at 27.86 kg and overall dimensions of 429 × 356 × 366 mm, this unit is built for high-current industrial applications.

Technical Specifications

Certifications & Standards

• IEC 60947-3: International standard for switch-disconnectors, disconnectors, switch-fuse combinations and fuse-combination units
• IEC 60529: Degrees of protection provided by enclosures (IP Code)
• CE: European Conformity marking — meets EU safety, health, and environmental requirements
• ATEX: Certified for use in potentially explosive atmospheres (EU Directive 2014/34/EU)
• CCC: China Compulsory Certification for the Chinese market
• UL 2799: UL standard compliance for electrical systems
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation on chemical substances
• WEEE: Waste Electrical and Electronic Equipment Directive compliance for responsible end-of-life disposal

Applications & Use Cases

• Main switch isolation in industrial power distribution panels and switchgear assemblies
• Fused disconnection of high-current feeders supplying motors, transformers, and distribution busbars
• Safe maintenance isolation in manufacturing plants, process industries, and utility substations
• Applications requiring ATEX certification in hazardous area installations
• Heavy-duty industrial automation and control panel builds requiring IEC 60947-3 compliant disconnection