Eaton CB185P-90 Automotive Circuit Breaker - 3 kAIC
Part Number: CB185P-90
Quick Summary
Eaton CB185P-90 automotive circuit breaker protects 48 Vdc automotive electrical systems. Engineers often struggle with reliability and downtime when protecting compact harnesses in tight installations. RoHS compliant and designed for panel mounting, this unit combines a 90 A rating with a 3 kAIC interrupt capacity to support rugged automotive protection. While the data does not list CE or IP certifications, it aligns with Eaton Bussmann automotive protection families to simplify stocking and procurement. This approach helps fleets and equipment operators reduce spare parts variety and improves maintenance turnaround in busy automotive and industrial environments.
Product Information
Extended Description
CB185P-90 Eaton: Eaton Bussmann series C.B.185P automotive circuit breaker, Switchable, 48 Vdc, 90A, 3 kAIC, Type III, High amp
Product Name
Eaton Bussmann series CB185P automotive circuit breaker
Catalog Number
CB185P-90
UPC
051712624541
Product Length/Depth
1.9 in
Product Height
2.9 in
Product Width
2.1 in
Product Weight
0.18 lb
Compliances
Contact factory RoHS Compliant
Amperage Rating
90 A
Interrupt rating
3 kAIC
Voltage rating
48 Vdc
Mounting Method
Panel
Special features
Switchable
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Eaton Specification Sheet - CB185P-90
Feature: 90 A amperage rating provides strong overcurrent protection for 48 Vdc circuits. Business Impact: Maintains system integrity in demanding automotive environments, reducing fuse replacements and minimizing unplanned downtime. Application: Ideal for power distribution in trucks, delivery vans, and off-road equipment. Feature: 3 kAIC interrupt rating enables rapid fault clearing for high-energy faults, protecting wiring and devices. Business Impact: Improves safety margins and prevents collateral damage in control circuits. Application: Suitable for high-energy automotive controllers and motorized harnesses. Feature: Switchable design allows quick reselection of the protective path after a fault, simplifying service. Business Impact: Speeds maintenance, reduces vehicle downtime, and lowers service costs. Application: On-vehicle protection in tight engine bays with limited service windows. Feature: Panel mounting and compact form factor streamline integration with existing Eaton Bussmann protection products. Business Impact: Simplifies installation, inventory management, and cross-compatibility across fleets. Application: Retrofit and new-build dashboards, power centers, and control panels. Feature: RoHS compliant construction supports responsible sourcing and regulatory compliance. Business Impact: Eases procurement for regulated markets and enhances sustainability. Application: Automotive manufacturing and fleet maintenance programs.
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FAQs
CB185P-90 uses panel mounting, designed to fit standard automotive panels and control centers. This Enables straightforward integration with existing Bussmann series enclosures and reduces space requirements in crowded engine bays. Proper panel cutouts and secure fasteners ensure vibration resistance and reliable electrical contact in mobile applications.
The CB185P-90 is rated for 90 A with a 48 Vdc voltage rating and offers a 3 kAIC interrupt capability. Its compact dimensions (1.9 in length, 2.9 in height, 2.1 in width) and weight (0.18 lb) support easy integration into space-constrained automotive and industrial power circuits while delivering dependable overcurrent protection.
Yes. The CB185P-90 is specifically designed for 48 Vdc automotive circuits, providing reliable protection for vehicle power distribution and control systems. Its switchable feature allows quick reconfiguration after faults, and its high interrupt rating helps isolate faults without damaging wiring or components in rugged automotive environments.
CB185P-90 is RoHS compliant, supporting lead-free and regulated material requirements. This helps simplify procurement for automotive manufacturers and fleet operators who must meet environmental standards, reduce material reporting overhead, and align with sustainability goals while maintaining system protection performance.
Common use cases include 48 Vdc power distribution in commercial fleets, off-road or construction equipment, and industrial control panels requiring reliable overcurrent protection. Its 90 A rating, 3 kAIC interrupt capability, switchable operation, and panel mounting suit compact enclosures and retrofit projects where fast fault isolation and minimal downtime are critical.