Bussmann CB ATM Footprint Auto...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$249.78
Bussmann CB ATM Footprint Automotive Circuit Breaker, Single-Pole Marine-Rated

Bussmann CB ATM Footprint Automotive Circuit Breaker, Single-Pole Marine-Rated

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Model: CB185P-25

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

$249.78
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Bussmann CB ATM Footprint Automotive Circuit Breaker, Single-Pole Marine-Rated

The Bussmann CB ATM Footprint Automotive Circuit Breaker is a single-pole, 14 Vdc rated circuit protection device built on the compact ATM footprint for automotive and marine electrical systems. Housed in a Grey UL94V-0 rated thermoplastic shell with a gold metal cover (Type I) or silver metal cover (Type II), this Bussmann circuit breaker is available in a wide range of amperage ratings from 5A to 200A to match specific circuit load requirements. Its switchable, marine-rated design delivers dependable overload protection in demanding automotive and marine DC power applications.

Key Features

  • ATM Footprint: Compact ATM automotive footprint fits standard automotive and marine fuse and breaker panel layouts.
  • Broad Amp Rating Range: Available in 5A, 6A, 10A, 11A, 15A, 20A, 25A, 30A, 35A, 40A, 50A, 60A, 70A, 80A, 90A, 100A, 110A, 120A, 135A, 150A and 200A ratings to match circuit load requirements.
  • Durable Construction: Grey UL94V-0 rated thermoplastic housing resists heat and supports reliable long-term performance.
  • Cover Options: Gold metal cover identifies Type I construction; silver metal cover identifies Type II construction.
  • 14 Vdc Rating: Rated for 14 Vdc automotive and marine DC electrical systems.
  • Single-Pole Switchable Design: Single-pole configuration with switchable operation for circuit control alongside overload protection.
  • Marine-Rated, Water-Resistant: Marine-rated, waterproof construction supports use in moisture-prone automotive and marine environments.

Certifications & Compliance

  • UL94V-0 Rated Thermoplastic Housing

Technical Specifications

  • Product Type: ATM Footprint circuit breaker
  • Voltage: 14 Vdc
  • Amp Rating Range: 5A - 200A across 21 options
  • Housing Material: Grey UL94V-0 rated thermoplastic
  • Cover: Gold metal (Type I) or silver metal (Type II)

Typical Applications

  • Automotive Electrical Systems
  • Marine Electrical Systems
  • DC Power Distribution Panels
  • Boat and RV Wiring Installations
  • Aftermarket Automotive Circuit Protection

Why Bussmann?

Bussmann, an Eaton brand, engineers circuit protection products trusted across automotive and marine industries for dependable performance. This ATM footprint circuit breaker combines a UL94V-0 rated thermoplastic housing with a single-pole, switchable, marine-rated design to deliver consistent overload protection across its full 5A to 200A amperage range. Choose Bussmann for code-conscious, reliable circuit protection in demanding DC electrical applications.

Manufacturer Resources

Product Specs

Department:
Electrical
Product Type:
ATM Footprint Circuit Breaker
Product Material:
Thermoplastic
Product Color:
Grey
Voltage Rating:
14VDC
Amperage Rating:
5A - 200A
Configuration:
Single-Pole
Standards:
UL94V-0
Product Group:
Circuit Protection
Product Subgroup:
Breakers / Disconnects

Bussmann CB185P-25 – Frequently Asked Questions

1) Will a Bussmann CB ATM footprint circuit breaker drop into a standard ATM (Mini) fuse block on a boat or RV panel?
That's the point of the design. The Bussmann CB breaker is built on the compact ATM automotive footprint so it seats in standard automotive and marine fuse and breaker panel layouts that take ATM blade fuses. You get resettable overload protection in the same slot instead of a one-shot fuse.
2) What amp ratings does the Bussmann CB ATM breaker come in, and how do I pick the right one?
Twenty-one ratings, 5A through 200A: 5, 6, 10, 11, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 90, 100, 110, 120, 135, 150 and 200 amps. Size it to the circuit's continuous load and the wire gauge feeding it, not to the device's peak draw. Low ratings like the 5A CB227-05 suit instrument and accessory circuits; the 100A to 200A parts such as CB185P-100 and CB187P-200 are main feed and inverter/windlass territory.
3) Can I use the Bussmann CB breaker on a 24V system or on 120V AC?
No. It is rated 14 Vdc only, which covers 12-volt automotive and marine DC systems. Don't put it on a 24V bus, and never on AC branch circuits. For 24V or AC work you need a breaker rated for that system voltage.
4) What is the difference between the gold cover and silver cover Bussmann CB breakers?
Cover color is the construction identifier. A gold metal cover marks Type I construction, a silver metal cover marks Type II. Both sit on the same grey UL94V-0 thermoplastic body. If you're standardizing a fleet or a panel build, match the cover color to what's already installed so the reset behavior stays consistent across the boat or vehicle.
5) Is the Bussmann CB circuit breaker safe to mount in a wet bilge or open engine compartment?
It is marine-rated with water-resistant, waterproof construction, so moisture-prone automotive and marine locations are within its intended use. The housing is grey UL94V-0 thermoplastic, a flame-retardant rating that matters in an engine bay.
6) Can the Bussmann CB breaker be used as a switch to kill the circuit?
Yes. It is a single-pole switchable breaker, so you can open the circuit by hand for service work as well as have it trip on overload. That saves adding a separate disconnect on an accessory or pump circuit.
7) Which Bussmann CB part number do I order for a 30 amp marine circuit?
CB185P-30 is the 30A version. The CB185P series carries the mid and high range here, from CB185P-25 up through CB185P-150. Below that, 15A and 20A are CB1911-15 and CB1911-20, 10A is CB211-10, and 5A and 6A are CB227-05 and CB227-06.
8) Should I use a resettable breaker or just an ATM blade fuse in my DC panel?
Use the Bussmann CB breaker where nuisance trips are likely or access is poor: bilge pumps, winches, windlasses, trailer and accessory circuits you don't want to crawl after with a spare fuse. It resets instead of being replaced and doubles as a manual disconnect. A plain ATM fuse is the simpler choice on a low-current circuit that rarely trips, and it drops into the same footprint.
9) Is there an odd amp rating like 11A available in this Bussmann breaker, or do I have to round up to 15A?
11A is available as CB184F-110, and 135A as CB184F-135, so you are not forced to jump to the next common size. That matters when the wire gauge or the device spec sits between the usual steps and rounding up would leave the conductor under-protected.
How fast can I get the Bussmann CB185P-25 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 CB185P-25 come with a warranty?
Absolutely. The Bussmann CB185P-25 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 CB185P-25?
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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