Eaton CB185-150 Automotive Circuit Breaker - 3 kAIC
Part Number: CB185-150
Quick Summary
The Eaton CB185-150 automotive circuit breaker protects 48 Vdc circuits in automotive and light industrial equipment. In harsh environments, reliability and fast fault isolation matter, and busy teams need a unit that is both rugged and easy to service. RoHS compliant, with waterproof construction, it supports outdoor and wet-location use; additional certifications should be confirmed with the manufacturer. This combination of form factor and electrical rating delivers business value through improved uptime, simpler maintenance, and safer, compliant assemblies. For 48 Vdc circuits in fleet vehicles and industrial equipment, CB185-150 provides a proven balance of protection and serviceability. Engineers can rely on its 150 A rating and 3 kAIC interrupt capacity to meet demanding loads while maintaining compact panel footprints.
Product Information
Extended Description
CB185-150 Eaton: Eaton Bussmann series C.B.185 automotive circuit breaker, Switchable, 48 Vdc, 150A, 3 kAIC, Type III, High amp, Waterproof
Product Name
Eaton Bussmann series CB185 automotive circuit breaker
Catalog Number
CB185-150
UPC
051712596435
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
150 A
Interrupt rating
3 kAIC
Voltage rating
48 Vdc
Material
Waterproof
Packaging Type
Standard
Mounting Method
Flush
Special features
Switchable
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Eaton Specification Sheet - CB185-150
Feature: 150 A amperage rating with a 3 kAIC interrupt capacity. Business Impact: Fast fault clearance protects wiring harnesses and components, reducing downtime and replacement costs in high-current automotive circuits. Application: Main power feeds in 48 Vdc systems within automotive and light industrial equipment. Feature: Switchable operation. Business Impact: Simplifies servicing, testing, and post-fault resets without disassembly, lowering maintenance time and labor costs. Application: Fleet and off-road equipment where regular checks are routine. Feature: Waterproof construction and rugged enclosure. Business Impact: Enables reliable performance in wet or exposed environments, extending service life and reducing weather-related failures. Application: Outdoor enclosures, engine bays, and damp locations. Feature: Flush mounting and compact footprint. Business Impact: Saves panel space, improves vibration resistance, and enables dense panel layouts in constrained installations. Application: Sealed automotive panels and compact industrial control panels. Feature: RoHS compliant with standard packaging. Business Impact: Supports regulatory compliance and streamlined supply chains for automotive and industrial programs. Application: Global manufacturing and compliant component sourcing. Feature: 1.9 in length, 2.9 in height, 1.68 in width with 0.23 lb weight. Business Impact: Lightweight, space-efficient protection suitable for tight harness routing and panel design. Application: Vehicle interiors and compact control housings. Feature: Type III, Waterproof, and Switchable. Business Impact: Delivers reliable protection with flexible operation in challenging environments. Application: Heavy-duty automotive and rugged industrial interfaces.
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FAQs
CB185-150 is designed for flush mounting in panels with a compatible cutout. Use the standard mounting provisions and ensure the 48 Vdc conductors are routed to minimize resistance and heat. Confirm clearance for the 1.9 in depth, 2.9 in height, and 1.68 in width envelope and secure wiring with appropriate strain relief to maintain vibration resistance in automotive or industrial environments.
CB185-150 provides a 150 A amperage rating and a 3 kAIC interrupt capacity, enabling rapid fault clearance for high-current circuits. It operates at 48 Vdc and features a switchable function for easy reset and testing. These specifications help protect wiring, sensors, and controllers from overloads while supporting reliable performance in 48 V automotive systems.
Yes. The CB185-150 features waterproof construction designed for rugged, outdoor, or damp locations. Its RoHS compliance further supports use in regulated automotive and industrial applications. For critical IP or CE documentation, contact the manufacturer to verify the exact certifications applicable to your region and project requirements.
CB185-150 is RoHS compliant per the supplier’s notes. While the data does not specify CE, IP, or SIL ratings, RoHS compliance supports regulatory expectations for hazardous substances. For precise certification status (CE, IP rating, SIL), consult Eaton’s technical documentation or request confirmation from the factory before procurement.
The switchable feature plus a 3 kAIC interrupt capacity enables quick fault isolation and easier post-fault testing, reducing maintenance time. The compact footprint and lightweight design simplify harness routing and panel design, potentially lowering assembly costs. Over time, the robust waterproof construction helps minimize weather-related failures, improving uptime and total cost of ownership in fleet and industrial deployments.