Eaton CB185P-70 Automotive Circuit Breaker - RoHS
Part Number: CB185P-70
Quick Summary
The Eaton CB185P-70 automotive circuit breaker protects 48 VDC automotive circuits. Engineers wrestling with heat, vibration, and tight panel space will appreciate its switchable design and compact form factor. The unit is RoHS compliant, with additional certifications available from the factory upon request. With a 70 A rating and a 3 kAIC interrupt capability, it delivers reliable overcurrent protection for critical vehicle electronics while simplifying installation in rugged automotive environments. Its panel-mount compatibility and light weight help reduce installation time and total cost of ownership, making it a practical choice for modern 48V electrical architectures.
Product Information
Extended Description
CB185P-70 Eaton: Eaton Bussmann series C.B.185P automotive circuit breaker, Switchable, 48 Vdc, 70A, 3 kAIC, Type III, High amp
Product Name
Eaton Bussmann series CB185P automotive circuit breaker
Catalog Number
CB185P-70
UPC
051712592994
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
70A
Interrupt rating
3 kAIC
Voltage rating
48 Vdc
Mounting Method
Panel
Special features
Switchable
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Eaton Specification Sheet - CB185P-70
The CB185P-70 delivers 70 A at 48 VDC with a 3 kAIC interrupt rating, providing robust overcurrent protection for vehicle power rails. This combination minimizes wiring damage during faults and reduces unplanned downtime in fleets and OEM assemblies. Switchable design enables quick fault isolation and post-trip reset without full disassembly, cutting service time in field installations and lowering maintenance costs in automotive and industrial deployments. Compact panel-mount form factor with dimensions of 1.9 in depth, 2.9 in height, and 2.1 in width, plus a light 0.18 lb weight, allows easy integration into crowded enclosures and reduces cabinet footprint. RoHS compliance ensures regulatory alignment for automotive and industrial systems, while factory-supplied certifications remain available to meet specific customer requirements. Compatibility with Eaton Bussmann series protection devices simplifies cascading protection schemes and improves harness integration in 48V architectures.
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FAQs
The CB185P-70 provides a 70 A continuous amperage rating with a 3 kAIC interrupt capacity and a 48 VDC voltage rating. This protects automotive power rails from overcurrent events while ensuring fast fault clearance. When selecting, confirm that connected harnesses and downstream devices can tolerate the peak interrupt current and that system wiring meets insulation standards.
Yes. The CB185P-70 is designed for panel mounting and fits in space-constrained enclosures thanks to its compact footprint: 1.9 in depth, 2.9 in height, and 2.1 in width, with a weight of 0.18 lb. This enables straightforward integration into existing dashboards, control panels, or protected junction boxes without sacrificing protection performance.
Switchable means the breaker can be turned off or reset without disassembling the panel or harness. In automotive and industrial settings, this facilitates rapid fault isolation, easier post-trip troubleshooting, and faster restoration of normal operation, reducing vehicle downtime and service costs in fleets or equipment with frequent fault events.
The CB185P-70 is RoHS compliant, aligning with responsible waste and materials restrictions. While RoHS is listed, additional certifications (such as CE or industry-specific approvals) may be available on request from Eaton. For regulated environments or OEM specifications, contact the factory to confirm current certification coverage and lead times.
Typical applications include protecting 48 VDC power rails in automotive electronics, battery management interfaces, and auxiliary circuits in hybrids and light-duty EVs. The 70 A rating and 3 kAIC interrupt capacity support reliable fault clearing in wiring harnesses and controllers, while the panel-mount design enables integration into protected enclosures such as engine compartments, dashboards, or trunk-side junction boxes.