Bussmann CB123-10B Eaton serie...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$79.79
$35.09
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Bussmann CB123-10B Eaton series CB123-B automotive circuit breaker, 22 Vdc, 10A, 1.5 kAIC at 12 Vdc, Automotive, type III, heavy duty, #10-32 TPI stud

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Model: CB123-10B

In Stock (leaves warehouse same day if ordered before 3pm ET)

$79.79
$35.09
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Bussmann CB123-10B Eaton series CB123-B automotive circuit breaker, 22 Vdc, 10A, 1.5 kAIC at 12 Vdc, Automotive, type III, heavy duty, #10-32 TPI stud.

  • Amp rating: 123 A
  • Interrupt rating: 1.5 kAIC at 12 Vdc
  • Product type: Circuit Breaker
  • Dimensions (L x W x H): 0.58 x 1.8 x 1.35 in

Genuine Bussmann part number CB123-10B.

Manufacturer Resources

Product Specs

Amperage Rating:
10 A
Compliances:
Contact factory
Connection:
#10-32 TPI stud
Interrupt Rating:
1.5 kAIC at 12 Vdc
Product Height:
1.35 in
Product Length Depth:
.58 in
Product Weight:
.54 lb
Product Width:
1.8 in
Voltage Rating:
22 Vdc
Department:
Electrical
Product Type:
Circuit Breaker
Product Group:
Fuses
Product Subgroup:
Automotive Fuses

Bussmann CB123-10B – Frequently Asked Questions

1) How does the CB123-10B circuit breaker connect to the wiring, and do I need ring terminals?
It terminates on #10-32 TPI threaded studs, so the wiring lands on ring terminals sized for a #10 stud, secured with #10-32 nuts. There are no push-on blades or screw clamps. Crimp your leads with #10 ring lugs before mounting, and keep the nuts tight, since a loose stud connection on a DC circuit heats up fast.
2) Is the Bussmann CB123-10B a fuse or a resettable breaker?
It is a circuit breaker, not a one-time fuse, so it is meant to trip on overload and be restored rather than replaced. The CB123-B series is described as a type III heavy duty automotive breaker, which is the manually resettable style, so after a trip you reset it at the breaker rather than waiting for it to cycle back on its own.
3) Can I use the Bussmann CB123-10B on a 24 volt truck or bus system?
No. The breaker is rated 22 Vdc, which covers nominal 12 volt systems with charging headroom but falls short of a 24 volt nominal system, where bus voltage runs near 28 volts while charging. Its 1.5 kAIC interrupting rating is also stated at 12 Vdc. For a 24 volt fleet circuit, specify a breaker rated at least 28 Vdc.
4) I need to replace a 10 amp stud-mount breaker in a truck. What exact part do I order?
Order Bussmann part number CB123-10B, from the Eaton CB123-B automotive series. Match three things against the one coming out: 10 amp rating, #10-32 studs, and a 12 volt DC circuit. The -10B suffix is the amperage, so a different number in that position is a different trip rating, not a different finish or mounting.
How fast can I get the Bussmann CB123-10B delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Bussmann CB123-10B come with a warranty?
Absolutely. The Bussmann CB123-10B is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Bussmann CB123-10B?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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