Eaton CB285P-30 Marine Rated Circuit Breaker - 3 kAIC
Part Number: CB285P-30
Quick Summary
The Eaton CB285P-30 marine rated circuit breaker is a 48 Vdc protection device designed to shield critical DC circuits in harsh marine and automotive environments. It provides reliable overcurrent protection for panel-mounted electrical systems, reducing the risk of electrical fires and equipment damage. Operators often struggle with water ingress, vibration, and corrosion that cause nuisance trips or degraded performance; this unit's waterproof housing and single-pole design address those challenges. With RoHS compliance noted by Eaton and a 3 kAIC interrupt rating, it supports durable, code-facing protection for demanding applications. By combining a compact form factor with switchable operation, it delivers fast, dependable protection with straightforward installation and maintenance, supporting uptime and lifecycle cost reduction.
Product Information
Extended Description
CB285P-30 Eaton: Eaton Bussmann series C.B.285P marine rated circuit breaker, Switchable, 48 Vdc, 30A, 3 kAIC, Automotive, Type III, High amp, Single-pole, Waterproof
Product Name
Eaton Bussmann series CB285P marine rated circuit breaker
Catalog Number
CB285P-30
UPC
051712741095
Product Length/Depth
1.9 in
Product Height
2.91 in
Product Width
1.77 in
Product Weight
0.175 lb
Compliances
Contact factory RoHS Compliant
Amperage Rating
30 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-30
Feature: Marine rated waterproof enclosure provides reliable protection against water, dust, and vibration. Business Impact: Enhances uptime by minimizing corrosion-related faults and premature breaker wear in harsh environments. Application: Suitable for boat panels, RV electrical bays, and marine service equipment where exposure is constant. Feature: 48 Vdc rating with 30 A current capability and 3 kAIC interrupt rating ensures fast, controlled fault interruption. Business Impact: Protects high-energy DC circuits from battery surges, reducing propulsion losses and fire risk. Application: DC starter circuits, motor controllers, and auxiliary power feeds aboard vessels and rugged vehicles. Feature: Single-pole, panel mounting offers a compact footprint and easy installation. Business Impact: Simplifies integration into standard panels and tight enclosures, lowering installation time and labor costs. Application: Cruise boats, workboats, and industrial control panels with limited space. Feature: Switchable operation enables quick isolation for maintenance and testing. Business Impact: Improves serviceability and safety during routine checks, reducing downtime. Application: Routine electrical servicing in busy marine or automotive aquatics and fleets. Feature: RoHS compliant design supports regulatory alignment and supply-chain reliability. Business Impact: Reduces compliance risk for global deployments and OEM integrations. Application: Global marine OEMs and automotive projects demanding cleaner materials. Feature: Automotive-grade considerations and Type III ruggedness for high-amperage DC applications. Business Impact: Delivers reliable performance under vibration and temperature extremes. Application: Power modules in marine yachts, heavy equipment, and rugged industrial vehicles.
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FAQs
Yes. The CB285P-30 is designed for 48 Vdc circuits with a 30 A rating and a 3 kAIC interrupt capability, making it suitable for DC protection in marine environments. Its panel-mount, single-pole design supports compact installations in boat panels and rugged vehicles, helping protect battery feeds and auxiliary circuits from overcurrent events.
The device fits standard panel spaces with a depth of 1.9 inches, height of 2.91 inches, and width of 1.77 inches. It is designed for panel mounting and features a compact footprint suitable for space-constrained enclosures in boats, RVs, and industrial equipment, simplifying retrofit projects and OEM assemblies.
Its marine-rated waterproof construction, 48 Vdc operation, 30 A capacity, and 3 kAIC interrupt rating address the demanding power needs of automotive and marine DC systems. The switchable single-pole design supports quick isolation for maintenance, reducing downtime and improving reliability in vibration-prone, moisture-rich environments.
The data notes RoHS compliance for the CB285P-30. For broader regulatory certifications (such as CE or IP ratings), verify with Eaton or consult the official specification sheets. The RoHS mark helps ensure materials meet restricted substance requirements across many markets and supply chains.
Best used on 48 Vdc DC power feeds in marine electrical panels, automotive power bases, and rugged industrial controllers. ROI comes from reduced nuisance trips, lower maintenance costs, and extended component life due to robust waterproofing and high interrupt rating, which translates to fewer service interruptions and longer system uptime.