Eaton CB185-50 Automotive Circuit Breaker - 3 kAIC

Part Number: CB185-50
Manufacturer
Eaton
Part number
CB185-50

Quick Summary

CB185-50 automotive circuit breaker protects 48 VDC automotive circuits from overloads in industrial vehicles. Engineers often struggle with reliability in harsh environments, where moisture, dust, or vibration can cause nuisance trips. This unit is RoHS compliant, Type III switchable, and housed waterproof to support rugged applications. In practice, it integrates with Eaton Bussmann series protection to simplify maintenance and spare-part inventories while delivering dependable protection for fleet and off-road electrical systems.

Product Information

Extended Description

CB185-50 Eaton: Eaton Bussmann series C.B.185 automotive circuit breaker, Switchable, 48 Vdc, 50A, 3 kAIC, Type III, High amp, Waterproof
Product Name
Eaton Bussmann series CB185 automotive circuit breaker
Catalog Number
CB185-50
UPC
051712597999
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
50 A
Interrupt rating
3 kAIC
Voltage rating
48 Vdc
Material
Waterproof
Packaging Type
Standard
Mounting Method
Flush
Special features
Switchable
Feature → Business Impact → Application: The CB185-50 provides 50 A protection at 48 Vdc with a 3 kAIC interrupt rating, delivering reliable fault interruption and reducing the risk of downstream damage in demanding vehicle electrical systems. This translates to increased uptime, lower repair costs, and safer operation for buses, trucks, and industrial equipment. Application: suited for 48 Vdc automotive circuits in harsh environments where waterproof, high-amperage protection is required, such as construction fleets and agricultural machinery.Feature → Business Impact → Application: Waterproof, rugged housing supports continued operation in wet or dusty conditions, minimizing false trips and maintenance cycles in marine, off-road, and mining applications. Application: ideal for equipment mounted in exposed environments where moisture resistance is critical and flush mounting improves panel aesthetics and space utilization.Feature → Business Impact → Application: Type III switchable functionality enables easy reset and field servicing while maintaining precise protection curves. Application: compatible with standard Eaton Bussmann protection schemes, enabling straightforward integration into existing electrical protection strategies and reducing training time for maintenance crews.Feature → Business Impact → Application: RoHS compliant components ensure regulatory alignment and safer disposal, lowering compliance risk for OEMs and fleet operators. Application: suitable for regulated markets and long-term asset management.Feature → Business Impact → Application: Compact dimensions and standard packaging type simplify replacement and retrofit projects, cutting installation time and downtime. Application: seamless fit in compact control panels and retrofit projects across automotive and industrial equipment.

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FAQs

The CB185-50 uses flush mounting for panel integration, enabling a low-profile fit in crowded control enclosures. This helps maintain panel aesthetics and minimizes protrusion, which is especially valuable in compact automotive and industrial control panels.
This device is rated for 50 A at 48 Vdc with an interrupt rating of 3 kAIC. These specifications provide strong protection against overloads and short circuits in 48 VDC automotive circuits and related equipment.
Yes, the CB185-50 is RoHS compliant, ensuring compliance with hazardous substances restrictions and safer disposal. This makes it suitable for regulated markets and OEMs seeking compliant, long-term protection components.
Absolutely. The CB185-50 features a waterproof housing and a Type III switchable design, making it well-suited for marine, off-road, and rugged industrial applications where exposure to moisture and dust is common.
By providing reliable, resettable protection (switchable) and a high interrupt rating, the CB185-50 reduces nuisance trips and downstream damage, lowering downtime and maintenance costs. Its compact form factor also simplifies retrofits and spares inventory management.