Eaton CB123-10B Automotive Circuit Breaker - 22Vdc 1.5kAIC
Part Number: CB123-10B
Quick Summary
CB123-10B automotive circuit breaker protects 22 Vdc automotive circuits from faults. Designers and technicians often struggle to find compact, vibration-tolerant protection that fits tight enclosures while delivering reliable interrupt performance. This Eaton device is RoHS compliant; for full regulatory declarations including CE, SIL, and IP ratings, consult Eaton's datasheet. The CB123-10B combines rugged heavy-duty construction with a compact footprint and a #10-32 TPI stud, delivering quick installation and dependable protection for automotive electrical systems. Used in automotive protection applications and in electrical protection & circuit control portfolios, this part supports uptime, safety, and cost-effective maintenance in harsh environments.
Product Information
Extended Description
CB123-10B Eaton: Eaton Bussmann series C.B.123-B automotive circuit breaker, 22 Vdc, 10A, 1.5 kAIC at 12 Vdc, Type III, Heavy duty, 10-32 TPI stud
Product Name
Eaton Bussmann series CB123-B automotive circuit breaker
Catalog Number
CB123-10B
UPC
051712601696
Product Length/Depth
0.58 in
Product Height
1.35 in
Product Width
1.8 in
Product Weight
0.54 lb
Compliances
Contact factory RoHS Compliant
Amperage Rating
10 A
Interrupt rating
1.5 kAIC at 12 Vdc
Voltage rating
22 Vdc
Connection
#10-32 TPI stud
Bussmann series 4-foot automotive planogram no.10730
Bussmann series complete full line catalog no. 1007
Bussmann series complete full line catalog no. 1007
Bussmann series Fuseology
Eaton Specification Sheet - CB123-10B
Feature: Amperage rating of 10 A and voltage rating of 22 Vdc, with an interrupt capability of 1.5 kAIC at 12 Vdc, Type III heavy-duty design, and a #10-32 TPI stud connection. Business Impact: Provides reliable overload protection for mid-power automotive loads, reducing the risk of harness damage and unplanned downtime. Application: Ideal for 22 Vdc vehicle power circuits and business-critical automotive modules. The design supports consistent performance under vibration and temperature cycling common to automotive environments. Feature: Compact form factor with a footprint and weight suitable for crowded panels (0.58 in depth, 1.35 in height, 1.8 in width; 0.54 lb). Business Impact: Eases installation in tight enclosures and streamlines serviceability. Application: Panel-mounted controls and inline harness protection in constrained spaces. Feature: RoHS compliant. Business Impact: Aligns with modern regulatory expectations and supplier risk management, enabling easier integration into automotive supply chains. Application: Global vehicle programs and regional assemblies. Feature: Connection through #10-32 TPI stud. Business Impact: Ensures secure, vibration-resistant connectivity with standard automotive wiring and Bussmann series compatibility. Application: Harness and connector assemblies in compact automotive protection layouts. Feature: Documentation and support availability (spec sheets, catalogs, planograms). Business Impact: Accelerates design wins and reduces procurement lead times. Application: Engineering evaluations and BOM planning across the Eaton Bussmann line.
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FAQs
CB123-10B uses a threaded #10-32 TPI stud connection, which favors secure, vibration-resistant mounting in automotive panels. When installing, ensure the stud terminals are clean, torque per manufacturer guidelines, and that wiring harness connectors are compatible with the stud size. Position the device to minimize exposure to moisture and heat, and reference the Eaton datasheet for any enclosure-specific clearance or derating notes.
The CB123-10B provides a 10 A amperage rating and a 22 Vdc voltage rating, with an interrupt rating of 1.5 kAIC at 12 Vdc. It is a Type III, heavy-duty automotive circuit breaker designed to withstand automotive fault conditions and provide reliable, fast interruption to protect wiring and loads in 22 Vdc systems.
Yes. The device is specified for 22 Vdc operation, with a 10 A rating and a robust interrupt capability, making it well-suited for protecting power distribution and critical loads in 22 Vdc automotive networks. Its heavy-duty construction and rugged terminals help maintain protection in harsh automotive environments.
CB123-10B is RoHS compliant, supporting restricted hazardous substances requirements. For broader regulatory declarations such as CE, SIL, or IP ratings, consult the Eaton datasheet or contact Eaton directly to confirm the latest certification scope and any regional adaptations.
By providing reliable overload protection and reducing fuse replacements in automotive circuits, CB123-10B minimizes downtime and maintenance costs. Its compact, rugged design aids in long service intervals and easier field servicing, contributing to overall lifecycle cost savings and improved system uptime in harsh automotive environments.