Eaton CB185P-35 Automotive Circuit Breaker - 3 kAIC
Part Number: CB185P-35
Quick Summary
The Eaton CB185P-35 automotive circuit breaker protects 48 Vdc vehicle electrical systems from overcurrent. Nuisance trips and compact panel space often hinder reliability and maintenance in mobile equipment. RoHS compliant and panel-mountable with a 3 kAIC interrupt rating ensure safe, scalable protection for automotive and off-highway applications. In practice, customers value reliable trip protection that minimizes downtime while fitting into compact automotive panels without sacrificing accessibility during service. This device integrates with Bussmann series documentation and Eaton's specification sheets to support compliance reasoning, maintenance planning, and streamlined sourcing in procurement workflows. Manufacturers benefit from its 1.9 in depth, 2.1 in width, and 2.9 in height footprint that ease panel layout and replacement.
Product Information
Extended Description
CB185P-35 Eaton: Eaton Bussmann series C.B.185P automotive circuit breaker, Switchable, 48 Vdc, 35A, 3 kAIC, Type III, High amp
Product Name
Eaton Bussmann series CB185P automotive circuit breaker
Catalog Number
CB185P-35
UPC
051712502115
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
35 A
Interrupt rating
3 kAIC
Voltage rating
48 Vdc
Mounting Method
Panel
Special features
Switchable
Bussmann series 4-foot automotive planogram no.10730
CB185P-35~TYPE 3 HI AM PANEL MOUNT CB - 35 AMP
CB185P-35~TYPE 3 HI AM PANEL MOUNT CB - 35 AMP
Bussmann series Fuseology
Eaton Specification Sheet - CB185P-35
The CB185P-35 delivers a 35 A continuous rating with a 3 kAIC interrupt capacity at 48 Vdc, combining fast response with rugged DC protection. This translates to fewer nuisance trips and reduced downstream wiring damage, especially in high-load automotive power rails and battery management circuits. It's well-suited for panel-mounted power distributions in light vehicles, forklifts, and off-road equipment where space is at a premium. Switchable operation is a key feature that simplifies maintenance and testing, allowing validation of circuit integrity without powering down the entire system and minimizing downtime during service. The unit's RoHS compliance supports regulatory readiness across markets and streamlines sourcing with Bussmann series documentation for easy procurement workflows. Its compact dimensions—1.9 in depth, 2.1 in width, and 2.9 in height—facilitate integration into tight enclosures and rugged chassis while keeping weight to a minimum.
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FAQs
CB185P-35 is a panel-mount DC circuit breaker designed for automotive panels. Install it in a standard panel cutout that accommodates the device footprint (2.1 in width by 2.9 in height) and a depth of 1.9 in. Connect the 48 Vdc input to the line terminal and the protected load to the output terminal, using appropriate gauge wiring and securing the unit for vibration resistance in mobile equipment.
The 35 A rating defines continuous current capacity for the protected circuit, while the 3 kAIC interrupt rating specifies the maximum fault current the breaker can interrupt safely. Together they assure reliable protection for DC distribution in automotive and off-highway systems, reducing insulation damage and downstream failures during short-circuit events.
CB185P-35 is well suited for automotive electrical protection and off-highway equipment, including battery management networks, 48 Vdc power rails, and compact distribution panels in light-duty trucks, agricultural machinery, and mobile industrial equipment. Its switchable feature supports testing and maintenance without full system shutdown, improving uptime in field deployments.
CB185P-35 is RoHS compliant, aligning with restricted-substance regulations in many markets. For additional certifications such as CE or UL, please consult Eaton’s datasheets or contact the factory, as the provided data emphasizes RoHS compliance and compatibility with Bussmann series documentation for procurement and design validation.
Eaton offers a full set of resources for the CB185P-35, including the Eaton Specification Sheet, Bussmann catalogs, a 4-foot automotive planogram, and related product videos. These materials help verify ratings, footprints, mounting requirements, and procurement workflows, facilitating quick integration into existing DC protection schemes.