Eaton CB185P-50 Automotive Circuit Breaker - 3 kAIC
Part Number: CB185P-50
Quick Summary
The CB185P-50 automotive circuit breaker from Eaton provides reliable overcurrent protection for 48 Vdc automotive systems. For engineers facing nuisance trips and prolonged diagnostics in fleets, a durable, fast-reset device reduces downtime and maintenance costs. RoHS compliant and panel-mount capable, the unit’s high-amp profile supports heavy-duty circuits in trucks, buses, RVs, fleets, and marine applications. This is backed by Eaton Bussmann series reliability, ensuring consistent performance and easy sourcing for procurement teams. With a 50 A rating, a 3 kAIC interrupt rating, and a compact footprint, it integrates smoothly into existing automotive panel assemblies.
Product Information
Extended Description
CB185P-50 Eaton: Eaton Bussmann series C.B.185P automotive circuit breaker, Switchable, 48 Vdc, 50A, 3 kAIC, Type III, High amp, Trucks, buses, RVs and marine systems
Product Name
Eaton Bussmann series CB185P automotive circuit breaker
Catalog Number
CB185P-50
UPC
051712592987
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
50 A
Interrupt rating
3 kAIC
Voltage rating
48 Vdc
Mounting Method
Panel
Special features
Switchable
Bussmann series 4-foot automotive planogram no.10730
CB185P-50~TYPE 3 HI AM PANEL MOUNT CB - 50 AMP
CB185P-50~TYPE 3 HI AM PANEL MOUNT CB - 50 AMP
Bussmann series Fuseology
Eaton Specification Sheet - CB185P-50
Switchable operation with a 50 A, 48 Vdc rating enables safe isolation of circuits during service and testing, reducing go/no-go errors for technicians. The ability to reset quickly lowers maintenance time and downtime in fleet environments, especially on highway trucks, city buses, RVs, and marine installations. The 3 kAIC interrupt rating provides robust fault protection, limiting wiring damage and protecting loads in high-current scenarios. Its compact panel-mount form factor—1.9 in long, 2.9 in high, and 2.1 in wide—saves space in crowded fuse panels and aligns with standard Eaton Bussmann series layouts, enabling fast replacements. RoHS compliance reduces regulatory and disposal risk, while documented specifications and datasheets ease procurement. The Type III high-amp characteristics deliver predictable trip behavior for reliable fleet protection, and the Eaton Bussmann lineage supports consistent performance across multi-vehicle deployments.
Get a Quick Quote for a Eaton CB185P-50
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton CB185P-50?
Enquire Now
FAQs
CB185P-50 is designed for panel mounting with dimensions of 1.9 in length, 2.9 in height, and 2.1 in width. Ensure a properly rated panel space, secure mounting, and access to terminals for reliable 50 A operation at 48 Vdc. Use standard panel hardware and follow Eaton datasheets for torque and wiring guidelines to minimize resistance and heat buildup.
Key specs include a 50 A amperage rating, 3 kAIC interrupt rating, and a 48 Vdc voltage rating. The device is switchable and panel-mountable, with RoHS compliance. These features deliver reliable overload protection, fast fault isolation, and straightforward replacement in automotive electrical systems.
Yes. The CB185P-50 is designed for heavy-duty 48 Vdc automotive circuits commonly found in trucks, buses, RVs, and marine installations. Its 50 A capacity and 3 kAIC interrupt rating provide robust protection for high-current loads, while the panel-mount form factor supports tight, space-constrained installations in fleets.
CB185P-50 is RoHS compliant as documented in Eaton's specifications. For additional approvals such as CE or IP ratings, contact Eaton or refer to the official catalogs and datasheets to determine applicability for specific regional requirements or industry standards.
The switchable design, 50 A protection, and 3 kAIC rating reduce repair time by enabling quick circuit isolation and fast resets. Its compact panel-mount form simplifies replacement, while RoHS compliance and standardized Eaton Bussmann series parts streamline stocking and procurement, contributing to lower downtime, predictable maintenance budgets, and improved fleet reliability.