Eaton 8ACLS-5R Fuse - 7.2 kV Class R
Part Number: 8ACLS-5R
Quick Summary
Eaton ACLS fuse protects high-voltage motor circuits with fast-acting overcurrent protection for industrial drives. This solution helps prevent motor-winding damage and reduces unplanned downtime by accurately clearing faults during startup and faults. IEEE Std. C37.41 is referenced, but no SIL, CE, or IP certifications are listed for this model; consult the manufacturer for regulatory confirmation. The ACLS 8ACLS-5R uses a single barrel with a 5R designation and AmpGard mounting, aligning with Bussmann series protection products. For procurement and maintenance, this fuse supports standardization across Eaton Bussmann installations, offering predictable coordination with upstream devices and straightforward replacement, ultimately delivering lower total cost of ownership and improved plant reliability.
Product Information
Extended Description
8ACLS-5R Eaton: Eaton Bussmann series 8ACLS fuse, Single barrel, 5R designation, 7.2 kV, 150A, 50 kAIC, Motor start, ACLS, Class R, Ampgard, Single barrel
Product Name
Eaton Bussmann series ACLS fuse
Catalog Number
8ACLS-5R
UPC
051712530217
Product Length/Depth
15.9 in
Product Height
4.2 in
Product Width
3 in
Product Weight
9 lb
Warranty
Not Applicable
Compliances
Contact Manufacturer
Certifications
IEEE Std. C37.41 Not Applicable
Catalog Notes
Consult factory for mountings.
Amperage Rating
150 A
Interrupt rating
50 kAIC
Voltage rating
7.2 kV
Barrels
1
Class
Class R
Mounting method
Ampgard
Special features
Single barrel, 5R designation
8ACLS-5R~151D963G04~EATON CUTLER HAMMER MAKE 8.3KV CLS MEDIU
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Eaton Specification Sheet - 8ACLS-5R
Feature → Business Impact → Application: Electrical ratings of 7.2 kV, 150 A, and 50 kAIC provide robust protection for motor-start circuits, reducing transformer and drive faults and enabling safer startup sequences in high-energy applications. This translates to fewer nuisance trips and extended equipment life in mining, manufacturing, and process industries. Application: motor feeders and drive panels requiring reliable, single-barrel protection with Class R coordination and AmpGard mounting. Feature → Business Impact → Application: Single barrel, 5R designation simplifies inventory and field service, lowering spare-part complexity and enabling quicker fuse replacements in critical control rooms and outdoor installations. Feature → Business Impact → Application: AmpGard mounting offers standardized integration with Eaton Bussmann protection systems, easing cabinet design and maintenance planning in OEM and retrofit projects. Feature → Business Impact → Application: Class R classification provides dependable upstream coordination, reducing cascading trips and enabling selective protection in multi-drive systems. Feature → Business Impact → Application: Catalog notes and factory mount guidance support installation accuracy, reducing commissioning time and downtime during upgrades or expansions.
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FAQs
The 8ACLS-5R uses AmpGard mounting and a single-barrel design, simplifying panel installation and replacement. Ensure mounting compatibility with existing Eaton Bussmann assemblies and allow for the 15.9 inch length, 4.2 inch height, and 3 inch width. When in doubt, consult Eaton factory mount guidance to select the correct enclosure spacing and bus connections for secure, code-compliant installation.
Key ratings include a 7.2 kV voltage rating, 150 A amperage rating, and a 50 kAIC interrupt capability. These specs enable strong protection for motor-start events and high-energy drives, while maintaining selective coordination with upstream protection. This helps prevent nuisance trips while ensuring rapid clearance of genuine faults in industrial motor circuits.
Yes. The 8ACLS-5R is designed for motor-start protection with ACLS features and Class R designation, supporting reliable protection in high-energy applications. Its AmpGard mounting and single-barrel design optimize space and serviceability, making it suitable for drives and motor feeders in manufacturing, mining, and process industries.
IEEE Std. C37.41 is referenced for this model, though a Not Applicable listing is shown for certifications. No SIL, CE, or IP certifications are listed; consult Eaton for regulatory confirmation and any updates to compliance, especially for specific regional or plant requirements. This helps ensure the fuse meets local electrical codes when integrating with existing protection schemes.
The fuse’s single-barrel design, standard AmpGard mounting, and class R coordination reduce replacement time and spare-part complexity, contributing to lower maintenance costs. Its reliability in motor-start protection minimizes downtime and extends drive life, delivering a favorable return on investment in facilities with frequent motor starts and high-energy drive systems.