Bussmann 2121500 MINI Circuit ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$9.98
Bussmann 2121500 MINI Circuit Breaker Type II, Gray Thermoplastic

Bussmann 2121500 MINI Circuit Breaker Type II, Gray Thermoplastic

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Model: 21215-00

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

$9.98
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Bussmann 2121500 MINI Circuit Breaker Type II, Gray Thermoplastic

The Bussmann MINI Circuit Breaker Type II delivers dependable overcurrent protection for low-voltage DC electrical systems. Molded from gray thermoplastic material, this compact breaker carries a 14 Vdc rating with a 225A at 14 Vdc interrupt rating, and the MINI Circuit Breaker family is available in 15A and 20A amp ratings to match a range of circuit loads. The compact footprint of the MINI platform makes it easy to integrate into tight panel spaces, fuse blocks, and wiring harnesses where space is at a premium. The Type II construction makes it a reliable choice for automotive, marine, and other low-voltage DC circuit protection applications where consistent, code-appropriate performance is required from installation to installation.

Key Features

  • Amp Rating Options: Available in 15A and 20A ratings, allowing installers to size the breaker to the specific circuit load within the MINI Circuit Breaker family.
  • Voltage Rating: 14 Vdc rating suited for low-voltage DC circuit protection in automotive and marine-style electrical systems.
  • Interrupt Rating: 225A at 14 Vdc interrupt rating for dependable overcurrent protection under fault conditions.
  • Breaker Type: Type II MINI Circuit Breaker construction for compact, panel-friendly installation alongside other MINI-series components.
  • Durable Construction: Gray thermoplastic material housing provides a rugged, non-conductive enclosure that protects the internal breaker mechanism.
  • Color: Gray thermoplastic housing for straightforward visual identification on a panel, fuse block, or wiring harness.
  • Compact Footprint: The MINI form factor is designed to conserve panel space compared to larger circuit breaker styles.

Technical Specifications

  • Product Color: Grey
  • Breaker Type: Type II
  • Voltage Rating: 14 Vdc
  • Interrupt Rating: 225A at 14 Vdc
  • Amp Rating Options: 15A, 20A
  • Material: Gray Thermoplastic

Typical Applications

  • Automotive and Marine Electrical Systems
  • Low-Voltage DC Circuit Protection
  • Battery and Power Distribution Circuits
  • Mobile, Off-Road, and Industrial Equipment Wiring
  • Fuse Block and Panel-Mounted Circuit Protection

Why Bussmann?

Bussmann is a recognized name in circuit protection, and the MINI Circuit Breaker Type II reflects that reputation with a durable gray thermoplastic housing and a defined 225A at 14 Vdc interrupt rating. Available in 15A and 20A ratings, this breaker line gives electrical professionals a dependable, consistent option for low-voltage DC overcurrent protection across a range of automotive, marine, and mobile equipment applications. Choosing Bussmann for this role means specifying a component built to a defined electrical rating rather than an unrated substitute.

Manufacturer Resources

Product Specs

Product Group:
Fuses
Product Color:
Gray
Product Width:
.001 in
Compliances:
Contact factory
Product Length Depth:
.001 in
Special Features:
Type II
Department:
Electrical
Packaging Type:
Standard
Voltage Rating:
14VDC
Product Weight:
.22 lb
Product Subgroup:
Automotive Fuses
Product Material:
Thermoplastic
Product Height:
.001 in
Product Details:
MINI Circuit breaker
Product Type:
Circuit Breaker
Series:
MINI
Amperage Rating:
15A - 20A

Bussmann 21215-00 – Frequently Asked Questions

1) Will a Bussmann MINI Type II circuit breaker work on a 12-volt automotive or marine system?
Yes. The Bussmann MINI Type II breaker is rated 14 Vdc, which is the standard charging-system voltage on a nominal 12-volt automotive or marine circuit. It is a low-voltage DC device only, so don't put it on 24V or any AC branch circuit.
2) What does Type II mean on a MINI circuit breaker, and will it reset itself?
Type II is the modified-reset style: after it trips it stays tripped while power is applied to the circuit, and it resets once the load or power is removed. That's different from a Type I auto-reset, which cycles on and off repeatedly on its own, and from a Type III manual reset with a button. The Bussmann MINI breaker is built as Type II.
3) Can I drop this breaker into an existing MINI (ATM) fuse block in place of a blade fuse?
Yes, that's the point of the MINI form factor. It's built on the MINI platform to share the same compact footprint used by MINI-series components, so it plugs into MINI fuse blocks, panel positions, and harness holders instead of a blade fuse, and gives you a resettable device in that slot rather than one you have to carry spares for.
4) What fault current can the Bussmann MINI Type II breaker safely interrupt?
225A at 14 Vdc. That's the clearing limit under fault conditions, so it covers typical 12V accessory and distribution branches fed downstream of a battery. On a circuit that can deliver more available fault current than that at the breaker, you need a device with a higher interrupt rating.
5) Is a resettable MINI breaker better than a MINI blade fuse for accessory circuits?
For circuits that see nuisance overloads, a winch, a lift gate, a bilge pump, a light bar, the resettable breaker saves a service call because nobody has to find and swap a fuse. A MINI blade fuse is the cheaper and simpler choice on a circuit that should never trip in normal use. The Bussmann Type II version stays open while the fault is present and recovers when power is pulled, so it will not chatter the load on and off the way an auto-reset breaker does.
6) What is the housing made of, and how is it identified on a panel?
The body is gray thermoplastic, a non-conductive molded housing over the breaker mechanism. The gray color reads as circuit-breaker rather than a colored blade fuse when you're looking down a populated fuse block, which is handy for a fleet tech tracing a panel. Each unit weighs .22 lb.
How fast can I get the Bussmann 21215-00 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 21215-00 come with a warranty?
Absolutely. The Bussmann 21215-00 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 21215-00?
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 21215-00 from ZenSupply?
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