Skip Navigation

T-Spec Circuit Breaker

Fits 1/0- to 4-gauge wire (200-amp)

Item #: 120CBF200

In Stock

5 Reviews | 1 question - 2 answers

Your price: $39.99 Earn up to 40 Rewards points

Add to Cart

+ Add to wishlist + Email me alerts for this product

View all associated offers

SPL lovers

Getting tired of replacing your power fuse every time you show off how loud your system can play? You should consider replacing the fuse holder with a circuit breaker. T-Spec's competition-grade circuit breaker protects your wiring and vehicle with reliable, fast-acting, spring-loaded disconnection when sensing a short circuit or over-current condition.

Valet stereo security

A circuit breaker also allows you to disable your expensive audio system, so no one can mess with it when you park in an attended garage, use valet parking, or leave your vehicle for detailing. The breaker accepts 1/0- to 4-gauge wire and features 24-karat gold-plated conductors for corrosion-free connections. You'll need Allen head wrenches to install this circuit breaker. Warranty: 1 year. 

T-Spec Circuit Breaker Reviews

Average Customer Review:

5 Reviews

circuit breaker

Written by: Dave from New Hampshire on July 31, 2015

Crutchfield Customer Review (What's this?)

Seems to be decent quality. Having the ability to do a quick disconnect is a nice option.



T-Spec Circuit Breaker

Written by: Sloth from New Hampshire on May 27, 2015

Crutchfield Customer Review (What's this?)

Only tripped it once but it seems to do the job just fine, easy to mount and connect wires, simple set up with durable switch.

Pros: easy set up good price durable

Cons: none at this point

Works as a breaker

Written by: Anonymous from Bloomington in on April 29, 2015

Crutchfield Customer Review (What's this?)

Doesn't fit 1/0 gauge wire like it says. Had to cut out atleast half of the strands to be able to force it in. Idk what the plastic is but it cracked immediately as I tried to mount it. I hadn't even gotten the nut tight yet and it just came clean off so had to ziptie it to a refigerant hose. Works tho lol

Pros: Works

Cons: Cheap plastic. Only fits 4 awg

Works great!!

Written by: Anonymous from Elmira, NY on April 18, 2014

Crutchfield Customer Review (What's this?)

This circuit breaker works great. Accepts my 4 gauge power wires and if an upgrade is ever necessary, goes up to I/0 gauge. Much more compact than breakers I've used in the past.

Pros: Compact size

Cons: None as of yet.

hard to find

Written by: Mark H from Cincinnati, OH on September 17, 2013

Crutchfield Customer Review (What's this?)

this is a hard to find item. i am using it for my power inverter on my work truck for the added safety and to shut down when not needed.


Cons: none

Hands-on research

What's in the box?

  • 200A Circuit breaker with 1/0 AWG or 4 AWG input and output

Product Research


Overview: This package includes a T-Spec v12-series, 24K hard gold plated circuit breaker, housed in an impact-resistant polycarbonate cover. The circuit breaker has a rating of 200 amps, and protects your vehicle and electronics without the need for constantly changing blown fuses. If a short circuit occurs, the circuit breaker will safely and instantly disconnect your electronics. A red lever will indicate that the circuit breaker has activated. To reset the breaker, simply return the lever to the normal position. A manual disconnect button is also included to allow you to break the circuit whenever you want. The base has two holes to allow you to mount the circuit breaker with screws or wire ties.

Wire Connections: The circuit breaker will accept either 1/0 AWG or 4 AWG power wire. The wire is attached to the circuit breaker with Allen-head set screws, located below a snap-on removable cover. A 3mm Allen wrench (not included) is required to tighten/loosen the set screws.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Customer Q&A

1 question already asked

It is not zero Gauge that it says it fits it's 1/0 there is a difference . Zero Gauge is bigger than what is posted on there specs . The only way to make it fit is to trim some of the strans off the wire all the way around it and then use a heat shrink to protect the area u trimmed . [ JEFF  Oct 16, 2015 ]
The inner sleeve is just like any other device that accepts multiple gauge wire. Remove the inner ring to go from 4 gauge to accommodate 0/1 gauge. Do not over tighten the set screw through. I have found that every company does not warranty stripped out terminals. T-spec, Stinger, Alpine etc.....they all state that. [ David  Oct 16, 2015 ]

Searches related to the T-Spec Circuit Breaker Fits 1/0- to 4-gauge wire