Eaton CB285P-100 marine rated circuit breaker - 3 kAIC
Part Number: CB285P-100
Quick Summary
CB285P-100 is a marine rated circuit breaker designed to protect 48 Vdc automotive power circuits. Engineers face corrosion, moisture ingress, and unreliable interruptions in harsh marine environments. Key considerations include RoHS compliance, waterproof housing, and suitability for 48 Vdc systems; verify producer certifications such as CE or IP where required. This combination supports safer operation, regulatory alignment, and reduced downtime across marine, automotive, and industrial panels. Its compact panel-mount, single-pole form suits compact enclosures while delivering reliable protection. For engineers evaluating replacement, the 3 kAIC interrupt rating provides margin against fault currents typical in marine electrical systems. Together with RoHS compliance and specifications, it helps meet stringent procurement standards.
Product Information
Extended Description
CB285P-100 Eaton: Eaton Bussmann series C.B.285P marine rated circuit breaker, Switchable, 48 Vdc, 100A, 3 kAIC, Automotive, Type III, High amp, Single-pole, Waterproof
Product Name
Eaton Bussmann series CB285P marine rated circuit breaker
Catalog Number
CB285P-100
UPC
051712741781
Product Length/Depth
1.9 in
Product Height
2.91 in
Product Width
1.77 in
Product Weight
0.175 lb
Compliances
RoHS Compliant Contact factory
Amperage Rating
100 A
Interrupt rating
3 kAIC
Voltage rating
48 Vdc
Material
Waterproof
Number of poles
Single-pole
Packaging Type
Standard
Mounting Method
Panel
Special features
Switchable
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Eaton Specification Sheet - CB285P-100
Marine-rated waterproof housing and 48 Vdc operation provide robust protection in saltwater environments. This reduces corrosion-related failures and moisture ingress, cutting unplanned maintenance in demanding marine panels. For boats, yachts, and offshore equipment, the CB285P-100 delivers reliable power isolation without compromising enclosure integrity. The device's compact dimensions and standard packaging help installers fit it into crowded panels and make retrofits straightforward. The combination of rugged construction and clear labeling supports safer operations in power-distribution enclosures. Feature: 3 kAIC interrupt rating preserves system integrity under fault conditions. Business impact: rapid fault clearance minimizes insulation damage and reduces downstream failures, translating into lower maintenance costs and less downtime. Application: accommodates typical marine switchgear faults while offering designers a comfortable safety margin for 48 Vdc power distribution networks. Feature: Switchable and Type III automotive design enables safe isolation and easy maintenance. Business impact: technicians can de-energize circuits without removing power from the entire panel, improving maintenance efficiency and safety. Application: onboard power centers, engine rooms, and rugged equipment where quick disconnection is essential. Feature: 100 A, 48 Vdc rating aligns with typical boat and vehicle systems. Impact: protects wiring, loads, and distribution networks at peak draw while staying compatible with standard 40–60 A loads. Application: DC power feeds for navigation, lighting, auxiliary systems on yachts and commercial vessels. Feature: Waterproof construction and single-pole panel mounting with standard packaging simplifies enclosure design, reduces installation time, and improves reliability in splash zones. Application: helm consoles, battery disconnects, and remote control panels where compact, corrosion-resistant protection is required. Feature: RoHS compliant, with optional CE verification depending on region. Business impact: reduces risk of restricted materials in supply chains and streamlines audit trails; combined with waterproof design, this breaker is suitable for marine, automotive, and industrial control panels. Feature: Space-efficient panel-mount footprint and lightweight construction. Impact: enables easier retrofits in crowded enclosures and reduces weight in mobile platforms like boats and service vehicles. Application: replacement for legacy breakers in service panels and new builds.
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FAQs
CB285P-100 is designed for panel mounting with standard dimensions that fit common electrical enclosures. For compatibility, verify panel cutouts align with the device’s depth and width, ensure a waterproof seal at the mounting face, and provide appropriate strain relief for 48 Vdc wiring. Use the standard terminal arrangement and observe correct polarity and isolation procedures during installation to maximize protection and lifecycle.
CB285P-100 offers a 100 A amperage rating and a 3 kAIC interrupt rating at 48 Vdc. This combination provides fast fault interruption to prevent insulation damage and downstream faults. It supports single-pole protection in DC distribution networks, making it suitable for navigation lights, control loads, and auxiliary circuits in marine and automotive panels.
Yes. The CB285P-100 is specifically described as marine rated with waterproof construction suitable for saltwater environments. It is well-suited for helm panels, engine rooms, and battery-distribution subsystems on boats and yachts, where reliable isolation and protection against moisture are critical for safety and uptime.
CB285P-100 lists RoHS compliance, with a note to contact the factory for additional certifications. For regions requiring CE marking or IP-related ratings, confirm with Eaton’s technical support or regional distributor. Verification of RoHS is straightforward via certification documents; CE and IP status may vary by lot or configuration, so obtain written confirmation for your procurement sanity.
The CB285P-100 delivers long-term reliability with waterproof housing and robust short-circuit protection, reducing unplanned outages and maintenance cycles on vessels or fleets. Its switchable feature simplifies maintenance disconnections, helping crews service panels faster and more safely, while the 3 kAIC capability adds a margin against high fault currents, supporting lower total cost of ownership over time.