Eaton CB185-80 Automotive Circuit Breaker - 3 kAIC Waterproof
Part Number: CB185-80
Quick Summary
The Eaton CB185-80 automotive circuit breaker provides reliable overcurrent protection for vehicle electrical systems. Engineers often struggle with waterproof, compact protection that fits in tight automotive housings and remains serviceable in harsh environments. This unit is RoHS compliant and uses a rugged waterproof enclosure with switchable operation for rugged use in fleets, industrial vehicles, and OEM electrical assemblies. With an 80 A amperage rating, a 48 Vdc voltage rating, and a 3 kAIC interrupt rating, it delivers dependable protection while minimizing nuisance trips. The flush-mount design and Bussmann series lineage support easy field replacement and scalable protection across multiple vehicle platforms, delivering business value through reduced downtime and simpler maintenance.
Product Information
Extended Description
CB185-80 Eaton: Eaton Bussmann series C.B.185 automotive circuit breaker, Switchable, 48 Vdc, 80A, 3 kAIC, Type III, High amp, Waterproof
Product Name
Eaton Bussmann series CB185 automotive circuit breaker
Catalog Number
CB185-80
UPC
051712614450
Product Length/Depth
1.9 in
Product Height
2.9 in
Product Width
1.68 in
Product Weight
0.23 lb
Compliances
Contact factory RoHS Compliant
Amperage Rating
80 A
Interrupt rating
3 kAIC
Voltage rating
48 Vdc
Material
Waterproof
Packaging Type
Standard
Mounting Method
Flush
Special features
Switchable
Bussmann series 4-foot automotive planogram no.10730
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Bussmann series complete full line catalog no. 1007
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Eaton Specification Sheet - CB185-80
Feature: 80 A amperage rating, 48 Vdc voltage rating, and 3 kAIC interrupt rating. Business impact: Enables reliable protection for high-demand automotive circuits, reducing the risk of costly electrical damage and downtime. Application: Suitable for heavy-duty vehicle electrical systems and fleet installations. Feature: Waterproof enclosure and flush mounting. Business impact: Enhances reliability in wet environments and simplifies integration into tight spaces, reducing installation time. Application: Marine, off-road, and outdoor vehicles where moisture exposure is a concern. Feature: Switchable operation. Business impact: Facilitates maintenance and testing without removing the device from service, lowering maintenance costs. Application: Routine diagnostics and fault isolation in automotive power distribution. Feature: Standard packaging with catalog number CB185-80 and UPC 051712614450. Business impact: Streamlines inventory, procurement, and replacement practices across repair centers and OEMs. Application: Retail planning and field service. Feature: RoHS compliant with factory confirmation. Business impact: Supports regulatory compliance and sustainability goals in automotive assemblies. Application: Customer-managed compliance programs and supplier audits.
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FAQs
CB185-80 uses flush mounting, which allows the unit to sit neatly against a panel or enclosure surface. This simplifies installation in modern vehicle dashboards and power distribution modules, reduces enclosure footprint, and improves vibration tolerance. Compatibility with standard automotive housings makes field replacements straightforward and minimizes redesign needs in new builds.
The CB185-80 provides an 80 A amperage rating, a 48 Vdc voltage rating, and a 3 kAIC interrupt rating. These specifications enable robust overcurrent protection for typical automotive circuits, tolerate surge conditions common in vehicle power systems, and deliver reliable fault isolation, which translates to reduced wiring damage and lower maintenance costs over the vehicle’s life cycle.
Yes, CB185-80 is RoHS compliant, which helps manufacturers meet regulatory and sustainability requirements for automotive assemblies. This reduces hazardous material concerns during production and service, supports environmental targets, and simplifies supplier audits. When used in conjunction with other compliant components, it contributes to an overall compliant, safer electrical system.
CB185-80 provides overcurrent protection for 48 Vdc automotive circuits with a rugged, waterproof design suitable for fleets, off-road equipment, and OEM power modules. It is best applied to main or feeder circuits where high-current reliability and moisture resistance are essential, helping prevent circuit damage and enabling quicker fault diagnosis during servicing.
Official documentation is available from Eaton. Look for the Eaton Specification Sheet for CB185-80 and Bussmann catalogs, plus related planograms and product pages. These resources provide full electrical ratings, dimensions, mounting details, and installation guidance to support sourcing, design validation, and procurement decisions.