Eaton CB123-15HB Automotive Circuit Breaker - 1.5 kAIC
Part Number: CB123-15HB
Quick Summary
The Eaton CB123-15HB automotive circuit breaker protects critical vehicle circuits with fast, reliable interruption for automotive and heavy equipment. Engineers often struggle with nuisance trips and wiring downtime, which disrupt productivity and increase maintenance costs. Key certifications and ratings include RoHS compliance and rugged Type III heavy-duty construction, paired with a 24 VDC operating voltage and a 15 A trip current. These features translate into shorter downtime, safer electrical harnesses, and easier compliance for regulated markets while supporting integration with Bussmann series protection in control panels. In practice, the CB123-15HB fits compact spaces and simplifies procurement for industrial automation projects.
Product Information
Extended Description
CB123-15HB Eaton: Eaton Bussmann series C.B.123-HB automotive circuit breaker, 24 Vdc, 15A, 1.5 kAIC at 12 Vdc, Type III, Heavy duty, 10-32 TPI stud
Product Name
Eaton Bussmann series CB123-HB automotive circuit breaker
Catalog Number
CB123-15HB
UPC
051712601641
Product Length/Depth
0.55 in
Product Height
2.1 in
Product Width
1.7 in
Product Weight
0.44 lb
Compliances
Contact factory RoHS Compliant
Amperage Rating
15 A
Interrupt rating
1.5 kAIC at 12 Vdc
Voltage rating
24 V DC
Connection
#10-32 TPI stud
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Eaton Specification Sheet - CB123-15HB
Feature: 24 V DC, 15 A rating with 1.5 kAIC interrupt at 12 V DC. Business impact: enables fast fault isolation and limits arcing energy, protecting sensitive automotive electronics and reducing component wear. Application: ideal for automotive control modules and power rails in commercial vehicles. The result is improved reliability and longer interval between maintenance shutdowns. Feature: Type III heavy-duty design. Business impact: withstands vibration, temperature cycling, and harsh environments common in trucks and construction equipment. Application: suitable for heavy-duty mobile power distribution and ECU protection. Feature: #10-32 TPI stud connection. Business impact: enables secure mounting and straightforward wiring harness integration, reducing installation time. Application: panel-mounted or enclosure protection near control wiring. Feature: RoHS compliant. Business impact: supports regulatory compliance across global markets and simplifies supplier audits. Application: any regional automotive electronics program seeking green compliance. Feature: Compact footprint with measurable dimensions. Business impact: saves space in crowded control panels and minimizes enclosure changes. Application: compact automotive control assemblies and mobile equipment racks. Feature: Access to specification sheets and catalogs. Business impact: accelerates engineering, sourcing, and downstream procurement. Application: design reviews and BOM creation for Eaton Bussmann series protections.
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FAQs
Installation starts by confirming the #10-32 TPI stud terminals are clean and free of corrosion. Secure the breaker to a panel mount or enclosure with appropriate hardware, tighten to the recommended torque, and attach conductors using ring or lug terminals sized for 15 A circuits. Verify the stud is fully seated to ensure a reliable electrical path and perform a functional trip test after wiring to confirm correct operation.
CB123-15HB is rated for 24 V DC operation, 15 A continuous current, and an interrupt rating of 1.5 kAIC at 12 V DC. The device uses a Type III, heavy-duty design suitable for automotive and mobile equipment environments. It features a robust #10-32 TPI stud termination and RoHS compliance, supporting safe, reliable circuit protection in demanding applications.
Yes. The CB123-15HB’s Type III heavy-duty construction, 24 V DC rating, and 1.5 kAIC interrupt capacity data make it well-suited for off-road and heavy equipment control circuits. Its rugged design helps withstand vibration and temperature swings typical in mobile machinery, while the RoHS-compliant build supports regulatory needs in diverse markets.
CB123-15HB is RoHS compliant, aligning with environmental and material standards for electronic components. While publicly listed certifications in the data set include RoHS, for additional regulatory certifications (such as CE, IP ratings, or SIL) please contact Eaton or check the latest datasheet and certification attachments. The product also adheres to the standard practices for automotive circuit protection in Bussmann series offerings.
The CB123-15HB reduces maintenance costs by minimizing nuisance trips and protecting crucial circuits from faults, thereby lowering downtime and repair expenses. Its rugged design and reliable RoHS-compliant construction help extend service intervals in harsh environments. For procurement and lifecycle planning, pairing this breaker with the Eaton Bussmann catalog supports faster BOM decisions and easier field replacements.