Eaton 8CLS-2R Fuse - 70A, 50 kAIC, 7.2 kV Class R
Part Number: 8CLS-2R
Quick Summary
Eaton 8CLS-2R fuse provides reliable overcurrent protection for motor circuits in industrial equipment. Users often face nuisance trips during motor starts and costly downtime when protection is undersized or misapplied. Key ratings include a 50 kAIC interrupt rating, 7.2 kV voltage rating, and a 70 A amperage rating, all in a compact CLS package. This design supports efficient panel layouts, reduces spare parts requirements, and accelerates maintenance workflows, delivering measurable uptime improvements and lower total cost of ownership for OEMs, machine builders, and end users alike.
Product Information
Extended Description
8CLS-2R Eaton: Eaton Bussmann series 8CLS fuse, Single barrel, 2R designation, 70A, 50 kAIC, Motor start, CLS
Product Name
Eaton Bussmann series CLS fuse
Catalog Number
8CLS-2R
UPC
051712530859
Product Length/Depth
15.9 in
Product Height
3 in
Product Width
3 in
Product Weight
9 lb
Warranty
Not Applicable
Compliances
Contact Manufacturer
Certifications
Not Applicable
Amperage Rating
70 A
Interrupt rating
50 kAIC
Voltage rating
7.2 kV
Barrels
1
Class
Class R
Special features
Single barrel, 2R designation
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - 8CLS-2R
The 70 A amperage rating paired with a 50 kAIC interrupt rating and a 7.2 kV voltage rating delivers robust protection during motor starting transients, reducing winding damage and unexpected downtime. This specification enables engineers to select protection that guards both the motor and drive equipment without oversizing, improving overall system reliability in pumps, compressors, conveyors, and HVAC drives. The single-barrel design with a 2R designation provides a compact footprint that fits tight control panels, enabling smaller enclosures and easier field retrofits without sacrificing protection levels. Class R designation and one-barrel construction simplify standardization and procurement across the Eaton Bussmann CLS fuse family, supporting faster spares availability and reduced stocking costs for OEMs. With a length of 15.9 inches and a 3 inch width and height, plus a 9 lb weight, the 8CLS-2R is built for robust mounting in demanding environments and offers stable electrical contact even in vibration-prone installations. Documentation and datasheets are readily accessible to confirm compatibility and assist with design-in, commissioning, and maintenance planning, including catalogs and the Eaton specification sheet for 8CLS-2R to streamline project timelines.
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FAQs
The 8CLS-2R combines a 70 A rating with a 50 kAIC interrupt capability and a 7.2 kV rating, delivering fast, reliable protection during motor starting transients. This reduces winding damage and unplanned downtime, while fitting standard CLS family form factors to simplify design-in and spare-part planning for motor drives, pumps, and conveyors.
The 70 A rating ensures protection aligns with typical motor starting currents, while the 50 kAIC interrupt rating provides a high fault-current withstand capability. Together they protect motor windings and control electronics from overcurrent events, enabling safer starts and minimizing the risk of cascading faults in industrial drives and panel assemblies.
Yes. The 8CLS-2R is a CLS fuse in Class R design, referencing the Bussmann CLS family. Its single-barrel, 2R designation supports compact panel layouts and easy interchangeability within the CLS lineup, helping to maintain consistent stocking, easier field replacements, and faster project timelines in control-panel assemblies.
Official certifications are not listed in the provided data; however, the product supports a 50 kAIC interrupt rating and 7.2 kV voltage rating suitable for many motor-start protections. For definitive compliance (SIL, CE, IP, etc.), consult Eaton’s technical resources or contact the manufacturer for the latest certification status and field-applicable standards.
By reducing nuisance trips and protecting motor windings during startups, the 8CLS-2R helps minimize downtime, lowers unplanned maintenance costs, and improves equipment availability. Its compact form factor also enables smaller, cost-effective panels, which translates to lower installation and spare-part expenses over the equipment’s lifecycle.