Eaton CB185P-30 Automotive Circuit Breaker - 3 kAIC
Part Number: CB185P-30
Quick Summary
CB185P-30 automotive circuit breaker from Eaton protects 48 Vdc circuits in demanding automotive and industrial equipment. Engineers often wrestle with nuisance outages, wasted time, and costly downtime when short circuits strike in harsh environments. RoHS compliant and built for high-amp switching with a 3 kAIC interrupt rating, Type III trip, and scalable protection. Panel mounting and a switchable design streamline installation, reduce maintenance, and support reliable diagnostics in OEM control panels. The compact form fits standard panel cutouts, supporting rugged performance under temperature and vibration commonly seen in vehicles and machines.
Product Information
Extended Description
CB185P-30 Eaton: Eaton Bussmann series C.B.185P automotive circuit breaker, Switchable, 48 Vdc, 30A, 3 kAIC, Type III, High amp
Product Name
Eaton Bussmann series CB185P automotive circuit breaker
Catalog Number
CB185P-30
UPC
051712502108
Product Length/Depth
1.9 in
Product Height
2.9 in
Product Width
2.1 in
Product Weight
0.18 lb
Compliances
Contact factory RoHS Compliant
Amperage Rating
30 A
Interrupt rating
3 kAIC
Voltage rating
48 Vdc
Mounting Method
Panel
Special features
Switchable
Bussmann series 4-foot automotive planogram no.10730
CB185P-30~TYPE 3 HI AM PANEL MOUNT CB - 30 AMP
CB185P-30~TYPE 3 HI AM PANEL MOUNT CB - 30 AMP
Bussmann series Fuseology
Eaton Specification Sheet - CB185P-30
Feature: 30 A amperage rating combined with a 3 kAIC interrupt rating provides reliable short-circuit protection for 48 Vdc automotive circuits. Business impact: reduces risk of wiring damage and system downtime, enabling OEMs to meet uptime targets in critical control panels. Application: ideal for automotive harnesses and battery-management interfaces where fast, predictable interruption is essential. Feature: Switchable design simplifies testing and maintenance by allowing a controlled reset without full system power-down. Business impact: lowers service time and boosts diagnostic efficiency in field or shop environments. Application: panel-mounted protection in service panels, control enclosures, and diagnostic bays. Feature: Panel mounting with a compact footprint fits tight panel spaces and accelerates installation. Business impact: minimizes enclosure redesign and labor costs during assembly. Application: OEM control panels and vehicle junction boxes. Feature: RoHS compliant construction supports regulatory compliance and supply-chain integration. Business impact: reduces hazardous material handling, simplifies supplier qualification, and eases recycling. Application: environmentally responsible electrical protection in mixed-product assemblies. Feature: Type III trip and high-amp capability ensure stable response under surge conditions. Business impact: improves protection consistency across diverse loads and reduces nuisance trips. Application: heavy-duty automotive and industrial control circuits. Feature: Small form-factor and weight support streamlined logistics and easier field replacements. Business impact: lowers shipping costs and inventory footprint for maintenance teams. Application: wherever a like-for-like CB185P-30 replacement is needed within the Bussmann series family.
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FAQs
To install CB185P-30, mount the device in a compatible panel cutout using the panel mounting method specified in Eaton’s datasheet. Connect 48 Vdc conductors to the protected circuit, observe the 30 A amperage rating, and ensure proper enclosure clearance for heat dissipation. After securing the unit, verify the switchable function by performing a controlled reset test with power present only on the protected circuit.
CB185P-30 is ideal for automotive control panels, battery management interfaces, and industrial equipment requiring reliable 48 Vdc protection. Its 3 kAIC interrupt rating and Type III trip make it suitable for high-current automotive harnesses and rugged machinery environments where quick interruption during faults is critical for safety and equipment longevity.
Key specs include a 30 A amperage rating, a 3 kAIC interrupt rating, and a 48 Vdc voltage rating. These parameters determine how the device responds to fault currents and how much fault current it can safely interrupt. Additionally, the switchable feature and Type III trip characteristic influence reset behavior and trip timing in real-world faults.
Yes, CB185P-30 is RoHS compliant, ensuring restriction of hazardous substances in line with modern regulatory expectations. This supports safer disposal and easier supplier qualification for automotive OEMs and industrial integrators. For additional certifications beyond RoHS, consult Eaton directly as certain markets may require further validation or UL/CE documentation.
The CB185P-30 delivers ROI through reduced downtime from fewer nuisance trips, faster fault isolation, and easier maintenance thanks to its switchable design. Its robust 3 kAIC interrupt rating and RoHS compliance also lower warranty and compliance risks, while compact panel mounting cuts assembly time and inventory footprint in production lines.