Bussmann CBT-20N Eaton CBT-N S...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$77.77
$31.75
Bussmann CBT-20N Eaton series CBT-N automotive circuit breaker, 2A, Automotive, type II

Bussmann CBT-20N Eaton CBT-N Series Automotive Circuit Breaker, 2A, Type II

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Model: CBT-20N
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$77.77
$31.75
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Bussmann CBT-20N Eaton CBT-N Series Automotive Circuit Breaker, 2A, Type II

The Bussmann CBT-20N is an Eaton Bussmann series CBT-N automotive circuit breaker rated for 2A, engineered to deliver reliable overcurrent protection in automotive electrical systems. Built to Type II automotive circuit breaker specifications, this compact device is RoHS compliant, making it a solid choice for OEM and aftermarket automotive wiring protection. Its low-profile design allows it to fit easily into tight automotive harness and panel applications, making it a practical drop-in replacement for automotive circuit protection points that call for a dependable, resettable 2A device rather than a single-use fuse.

Key Features

  • Amperage Rating: 2A rating provides precise overcurrent protection for automotive electrical circuits.
  • Type II Automotive Design: Engineered to Type II automotive circuit breaker specifications for dependable trip and reset performance.
  • Eaton Bussmann CBT-N Series: Part of the trusted Eaton Bussmann CBT-N series of automotive circuit breakers.
  • Compact Footprint: Measures approximately 1.3 in in length/depth, .52 in wide, and .15 in high for easy installation in space-constrained automotive applications.
  • Lightweight Construction: At approximately .2 lb, it adds minimal weight to automotive wiring assemblies.
  • RoHS Compliant: Manufactured to RoHS compliance standards for restricted-substance requirements.
  • Resettable Protection: As a circuit breaker rather than a one-time fuse, the CBT-20N can be reset after a trip event instead of requiring replacement.

Certifications & Compliance

  • RoHS Compliant

Technical Specifications

  • Amperage Rating: 2 A
  • Compliances: RoHS Compliant
  • Product Height: .15 in
  • Product Length Depth: 1.3 in
  • Product Weight: .2 lb
  • Product Width: .52 in

Typical Applications

  • Automotive Electrical Systems
  • Automotive Wiring Harness Protection
  • OEM and Aftermarket Automotive Circuits
  • Mobile Equipment Electrical Protection
  • Low-Amperage Automotive Accessory Circuits

Why Bussmann?

Bussmann by Eaton is a recognized name in circuit protection, and the CBT-N series automotive circuit breaker reflects that reliability in a compact, RoHS compliant package. For professionals and OEMs specifying automotive-grade overcurrent protection, the Bussmann CBT-20N delivers dependable Type II performance built into the trusted CBT-N platform, with a compact, lightweight housing that supports space-constrained automotive electrical design without compromising on circuit protection performance or RoHS compliance.

Manufacturer Resources

Product Specs

Amperage Rating:
2 A
Compliances:
RoHS Compliant
Product Height:
.15 in
Product Length Depth:
1.3 in
Product Weight:
.2 lb
Product Width:
.52 in
Department:
Electrical
Product Type:
Circuit Breaker
Product Group:
Fuses
Product Subgroup:
Automotive Fuses

Bussmann CBT-20N – Frequently Asked Questions

1) What does Type II mean on the Bussmann CBT-20N automotive circuit breaker?
Type II is the modified-reset automotive breaker class. The CBT-20N is built to Type II automotive circuit breaker specifications, so it trips on an overcurrent and stays tripped until the fault is cleared or power to the circuit is removed, rather than cycling on and off repeatedly. That behavior is what you want on an accessory circuit where a repeatedly self-resetting breaker would keep re-energizing a shorted wire.
2) Can I use the CBT-20N instead of a 2 amp automotive blade fuse?
Yes, in the sense that it protects at the same 2 A rating and is resettable instead of single-use, so a nuisance trip does not mean digging out a spare fuse. It is not a blade-fuse drop-in shape, though: the CBT-20N is a discrete breaker measuring 1.3 in length/depth, .52 in wide and .15 in high, so it needs its own mounting and termination point in the harness rather than a standard ATO/ATC fuse block cavity.
3) Will a 2A breaker like the CBT-20N be big enough for my accessory circuit?
Two amps is a low-current protection point, sized for things like signal, sensor, instrument and small accessory feeds. If your load draws more than 2 A steady, the CBT-20N will trip, and you need a higher-amperage breaker in the CBT-N series instead. Size the breaker to the wire and the load, not to the convenience of what is on the shelf.
4) How much room do I need to fit the Bussmann CBT-20N in a wiring harness or panel?
It is small: 1.3 in by .52 in by .15 in, and about .2 lb. That flat, low profile is why it goes into tight harness runs and crowded panels where a bulkier breaker will not sit. Leave yourself access to the terminals and, if you need it, to the reset.
5) Is the Bussmann CBT-20N RoHS compliant for an OEM build?
Yes. The CBT-20N is manufactured to RoHS compliance standards for restricted-substance requirements, which is normally the box an OEM or fleet build needs ticked on a purchased circuit protection device.
6) What part number do I order for the 2 amp CBT-N breaker?
The manufacturer part number is CBT-20N, from the Eaton Bussmann CBT-N series. Within that series the number carries the rating, so the 20N is the 2 A device. Quote the full CBT-20N when ordering so you do not get a neighbouring amperage.
7) Where is a 2A resettable automotive breaker actually used?
Typical points are automotive electrical systems and wiring harness protection, OEM and aftermarket circuits, mobile equipment, and low-amperage accessory feeds. Fleet and equipment maintenance crews favour a resettable device at these points because a trip is cleared in the field without stocking replacement fuses.
How fast can I get the Bussmann CBT-20N 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 CBT-20N come with a warranty?
Absolutely. The Bussmann CBT-20N 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 CBT-20N?
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
Why buy the Bussmann CBT-20N from ZenSupply?
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