Eaton CB185-35 Automotive Circuit Breaker - Waterproof
Part Number: CB185-35
Quick Summary
CB185-35 automotive circuit breaker protects 48 Vdc systems across rugged mobile equipment and industrial vehicles. A common pain point is moisture ingress and unreliable protection in harsh field conditions, leading to unplanned downtime. This device is RoHS compliant and features waterproof housing with Type III switchable action to maintain circuit integrity. Together with a 35 A rating and 3 kAIC interrupt capacity, CB185-35 helps meet safety margins while reducing maintenance costs. Engineers can rely on flush mounting for easy panel integration and consistent performance in automotive control circuits. Documentation and datasheets from Eaton provide clear installation guidance and compatibility with Bussmann series accessories.
Product Information
Extended Description
CB185-35 Eaton: Eaton Bussmann series C.B.185 automotive circuit breaker, Switchable, 48 Vdc, 35A, 3 kAIC, Type III, High amp, Waterproof
Product Name
Eaton Bussmann series CB185 automotive circuit breaker
Catalog Number
CB185-35
UPC
051712502092
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
35 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
CB185-35~TYPE 3 - SWITCHABLE W.P. CB - 35 AMP
CB185-35~TYPE 3 - SWITCHABLE W.P. CB - 35 AMP
Bussmann series Fuseology
Eaton Specification Sheet - CB185-35
Feature 48 Vdc automotive rating → Business Impact The CB185-35 is engineered for modern vehicle electrical systems, delivering reliable overcurrent protection in 48 Vdc networks, which reduces unexpected shutdowns and extends component life. Application often includes automotive control circuits and rugged mobile equipment where uptime is critical. Feature 35 A rating → Business Impact It provides precise protection for high-current automotive loads while minimizing nuisance trips, lowering replacement costs and improving system predictability in fleet operations. Application Automotive, industrial vehicles, and heavy equipment. Feature 3 kAIC interrupt rating → Business Impact High fault-current events are cleared quickly, protecting conductors and downstream electronics, reducing arc damage and downtime. Application suitable for harsh environments where fault energy is a concern. Feature Waterproof housing + Type III switchable → Business Impact Enables dependable operation in wash-down, rain, or salt-prone environments, supporting compliance with outdoor and marine installations. Application Marine, outdoor machinery, and agricultural equipment. Feature Flush mounting + Standard packaging → Business Impact Simple integration and a clean panel appearance, reducing install time and risk of wiring interference. Application panel integration in control cabinets and engine bays. Feature RoHS compliant → Business Impact Supports regulatory compliance and sustainability goals, easing procurement for regulated industries. Application broad industrial adoption and multi-site deployments.
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FAQs
CB185-35 provides a 3 kAIC interrupt rating and a 48 Vdc voltage rating, with a continuous current capability of 35 A. This combination supports reliable overcurrent protection for 48 V automotive circuits while maintaining system continuity during fault events. The device is designed for rugged environments typical in automotive and industrial equipment.
Yes. CB185-35 features waterproof construction and Type III switchable action, making it well-suited for wash-down areas, exposed outdoor installations, marine equipment, and environments with moisture exposure. Its flush-mount design also helps maintain panel integrity in challenging conditions.
CB185-35 is designed for flush mounting with standard packaging, enabling quick panel integration. Ensure a clean mounting surface, follow the datasheet installation guidance, and verify 48 Vdc system compatibility. The switchable mechanism allows for convenient reset or cycling without requiring extensive tooling.
CB185-35 is RoHS compliant as indicated by Eaton. While the data does not list CE or SIL ratings, always consult the latest Eaton specifications and datasheets for any additional certifications required for your region or application.
The 35 A rating with a 3 kAIC interrupt capacity provides reliable short-circuit protection, reducing the risk of extensive wire and component damage. Waterproof, switchable operation minimizes downtime from water exposure or nuisance trips, while flush mounting speeds installation and lowers maintenance labor costs over the life of a fleet or facility.