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30 amp. In-Line Circuit Breaker - Perpendicular Mount Bracket

30 amp. In-Line Circuit Breaker - Perpendicular Mount Bracket

Item # 38630
Our Price: $6.95
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Shipping Weight: 0.07 lbs
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  • Reviews (68)
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Pollak Accessories and Parts - 38630

  • Wiring
  • Circuit Breaker
  • Pollak
  • 30 Amp


  • Metal housing with perpendicular mounting bracket
    • 2-Piece design
    • Attached by spot welding
  • Cycling automatic reset
    • Cycles continuously during over-current condition
    • Returns to run mode when source of over-current is removed
  • (2) 10-32 Studs
    • Yellow, dichromate (copper color) plating on battery terminal
    • Zinc plating (silver color) on auxiliary terminal
  • Straight mounting bracket
  • SAE Standard J553 compliant


  • Applications: Accessory circuit, cooling fan, door locks, headlamps, tail lamps, window lift, sunroof, trailering package, electric brake controls
  • Terminal dimensions: 0.66" long
  • Current rating: 30 DC amp
  • Voltage rating: 12 VDC (Voltage Direct Current)
  • Operating temperature: -10 degrees F (-23 degrees C) to 150 degrees F (65 degrees C)
  • Storage temperature: -20 degrees F (-29 degrees C) to 200 degrees F (93 degrees C)
  • 1-Year limited warranty

54-230 Pollak Single-Way, Thermal Circuit Breaker - Cycling/Automatic Reset - 90-Degree Mount Bracket - 30 Amp

Customer Satisfaction Score:

Customer Reviews

30 amp. In-Line Circuit Breaker - Perpendicular Mount Bracket - 38630

Average Customer Rating:  4.8 out of 5 stars   (68 Customer Reviews)


The Duel cable with a black and white wires on the FJ Cruiser it takes about 14 ft to run through the frame on the driver side. I used a tape measure to fish the wire through the frame. The Prodigy P3 was easy to install and works very well

Jack D.




Does exactly what it is supposed to do...protect the wiring under overload. So far, no issues after one year of being in the harsh conditions under my Jeep's hood.


Circuit breaker seems to be working as intended. Ni issues so far at 1 year+


Excellent quality and strength. Why skimp on something as important as your hitch? I have purchased three of these Draw Tites - I guess a repeat customer will scream about the true quality a company can garner from repeat customers. When you pull show cars worth six figures, you can't afford a poorly made hitch.
Step up, step out, and don't fret what you are pulling.


It's a circuit breaker!

We got
this wire our small teardrop for underway charging. I put it inline after the relay/solenoid, wired so we wouldn't exceed reasonable current flow in 10ga. wiring. I don't think it's ever tripped, except when I loaded it for testing.

Would use again.


I had a couple of corroded breakers on my 12 year old travel trailer that caused a lack of 12v power from the house battery to the 12v system components. The replacements solved the problem. I have purchased from etrailer before and I've always been completely satisfied with the products.


The equipment arrived complete and in good shape. However the most impressive thing about this, and earlier orders with etrailer was the customer service. When they saw one of the items was delayed they reached out to offer an alternative. They also kept me well informed of progress and when it was shipped/delivered. The videos on their products including installation are also very detailed and helpful. Great place to do business with.


Good fast transaction. Item was as adve rtised.


Perfect connector for what I was looking for on my 2019 RAV4. I originally installed it with the L bracket, but later changed it to be flush in the bumper. Looks very clean. The prefab pigtail made install into the car very easy as well.


Works perfect on my travel trailer, in between my converter and my auxiliary battery. So cheap, that I bought 2 so as to have a spare...why not? Processing and shipping was super fast, I ordered on Wednesday afternoon and had it Saturday. It was awesome to see the video provided by eTrailer, as it helped convince me that this was the exact part I needed. I'll be shopping here again!


This product. Is. A great one its going to be used to conect my brake controller to. My 99 Chevy Tahoe I. Got. Both the 20 amp and the. 30 amp . Hopfuly I. Won't need. the 40amp . thanks so much for a. Wonderful produce


Cheaply made. Product gets a 3 star. Shipping gets a zero star. Your warehouse picked a product that had the all important bracket broken off. It was not in the box so the extreme volume and lack of packers delayed my installation. Thank you for shipping correct item 2 weeks late. This is becoming a regular policy.


I should have ordered the in-line breaker without mounting bracket......discovered it, but you were so fast the parts had been shipped..... I removed the bracket and installed it my Jeepster. It does the job.


I install them in line and one more time the tutorial video was the best tool in my tool box. even wen I got a HVAC back ground the video was my best tool. Thank you.


Exactly what I needed to add a brake controller to my RV. Thanks for the support.


They had to send this to me extra because it was missing from the ETBC7L kit that I purchased. It was inconvenient that it was missing but customer service and getting the replacement was easy and expedient.


Fast shipping and arrived on time. Breaker has plastic case not metal but should not affect its function. Bolted on in place of original and should work as original. Pleased with purchase.


I ordered this controller and additional parts from Laser. Before committing to buying, I asked him many questions. He answered them all in about a clear and concise way as possible while presenting a picture of how to install the device. It arrived today and I haven't started, but he also emphasized that I could call if I ran into any difficulties. I'll follow up when the job is complete. My experience in this context could not have been better.


Everything was as advertised, and thank you Kaylyn R for your wonderful customer service. It took awhile to get everything installed, because of crazy events in the past year, but it all works great!


I am very pleased with your products. The installation went very well and your video sure made it look easy. I have already told my friends about your products.


very fast delivery,sales person was very helpful,easy installation,will do biss again,thank you e trailer.


The right part, manufacturer, shipped and received as promised. etrailer reliable as usual. Thank you!


great product used on 3 vehicles for brake control


Etrailer is the bomb, great customer service and everything arrived on time, with no issues!


Worked perfect just had to shorten studs so hood spring would clear them when closed.

Etrailer Expert

Mike L.


You might consider relocating the breaker. If its close enough to the hood spring that you had to shorten the studs, theres a chance that on rough pavement the spring could still contact the studs, which could short out the circuit.

Show More Reviews

See what our Experts say about this Pollak Accessories and Parts

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    If the lights inside the trailer, and other 12 volt accessories, run exclusively off of the 12 volt circuit from the 7-Way trailer connector you will need to mount a battery on the trailer to power them when the trailer is not plugged into the tow vehicle. The way this would work is that the 12 volt wire from the 7-Way would go to the positive terminal on the battery. Your 12 volt accessories including the dome light would also need to connect to the positive battery terminal. That way...
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  • Is a Circuit Breaker Required when Installing a Brake Controller on a 2008 Cadillac Escalade
    The short answer is neither. You will not need to use a circuit breaker when installing a brake controller on your 2008 Cadillac Escalade because it already has the wiring and fuse locations for the brake controller. The 2 wires under the hood that attach to the studs at the front of the power distribution box are factory wires. Fuses will be installed (if not present already) in the locations closest to those studs. I have linked the video you mentioned and a help article explaining...
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  • Does Circuit Breaker part # 38630 Need to Be Grounded
    The circuit breaker part # 38630 that you referenced does not require any grounding. If you wanted to zip-tie it out of the way you would not need to worry about attaching it to a metal surface so that it would be grounded.
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  • Brake Controller on 2001 Ford F350 Not Getting Power
    That lead is fused. Take a look in the power distribution box under the hood. There should be two blue maxi fuses that protect the power supply for the brake controller, and the 12-Volt accessory circuit to the trailer connector. Your owners manual should be able to provide the specific fuse location. If the fuse is missing or blown, install or replace it. If you should decide that you wish to wire the controller directly to 12-Volt power, I would recommend running a circuit directly...
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  • Can Inline Fuse be Used to Run 12 Volt Hot Lead to 7-Way
    You can use a 30 amp fuse if you like, though I do recommend using a circuit breaker instead, the 30 Amp In-Line Circuit Breaker # 38630. This is going to be a lot easier because while you will need to replace the fuse, a circuit breaker will automatically reset. I have added a link below to a video review for you to check out as well if you'd like.
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  • Valley Odyssey Brake Controller Installation on 2001 Chevy Silverado
    You have really gone a long way to troubleshoot this problem! I am impressed. When you test the prongs in the junction box under the dash, in addition to the pin that went hot when the brakes are applied, there should be a pin that shows constant 12 Volts. Have you checked the power distribution box under the hood? This is where the fuse that powers up the brake controller is located. The fuse is a 30 amp, and will be located toward the rear of the fuse block closest to the cab. Just...
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  • Replacement 30 Amp In-Line Circuit Breaker - Perpendicular Mount Bracket
    The 30 amp circuit breaker # 38630 is an exact match for your current circuit breaker though it may not have W29 stamped on it. I spoke with Pollak about that designation and is a date code or batch number so you could get one that is completely different from W29.
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  • Troubleshooting Trailer Brake Controller Working with Brake Pedal but Not with Manual Override
    If you are getting the decimal on the Reese Brakeman display when applying the brake pedal but not with the manual override lever, it is an indication that the controller is not receiving power. The LED decimal is showing up with the brake pedal because it is getting power/indication from the brake light switch. But when the manual override lever is used, power needs to come through the controller's black wire, which should be connected to the truck's battery via 30 amp circuit breaker...
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  • Power Lost to Power Mirrors, Dome Light, Visor Lights and Blower Motor Blows Fuse 2001 Dodge Ram
    Is this the result of the installation of something, such as a brake controller? On a 2001 Dodge Ram 2500 a brake controller has to be hardwired in. Three of the four connections are straight-forward. But one could cause some problems if not attached to the correct wire. The 3 easier ones are white for ground, black for 12 volt power in, and blue for output to trailer brakes. The white ground wire must be attached to the negative battery terminal. No other location is substantial enough....
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  • Can Prodigy P3 Brake Controller Activate Two Trailers Brakes
    The Prodigy P3 # 90195 can work on up to 4 brake axles or 8 total brake assemblies. As long as your two trailer combined have no more than 4 brake axles the P3 would work fine. The power wire for the controller (black wire) will need to be protected with a 30 amp breaker like the part # 38630.
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  • What Amperage Rating Breakers are Used for 7-Way Trailer Wiring
    If the breakers are for the 12 volt power circuit of the 7-way wiring then they would most likely be 40 amp like the part # 9510 but if they are for the brake controller output circuit they are most likely 30 amp like the # 38630.
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  • How to Install a Brake Controller in a 1997 International 4900
    You will need to hardwire the Pilot Brake Controller # 80550 in your 19997 International 4900 as there isn't a brake controller port. To do that check out the FAQ article I attached on installing a brake controller from scratch on a vehicle. Basically the blue wire of the controller will get run to the brake output circuit of your trailer connector, the black wire will run to the positive side of your batter through a circuit breaker like part # 38630. The white wire will run to the...
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  • Will the Pigtail Wiring Harness 7894 Work with the Tekonsha PowerTrac
    Yes, the Pigtail Wiring Harness for Tekonsha and Draw-Tite Brake Controllers part # 7894 will work with your Tekonsha PowerTrac Electronic Brake Controller part # 39523. The brake controller ports on most Tekonsha, Reese, and Draw-Tite brake controllers are the same. If you don't already have a circuit breaker for the brake controller power then you will need this as well, part # 38630.
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  • How to Wire a Hopkins Agility in a 1985 Chevy Silverado
    To install the Hopkins Agility Brake Controller # HM47295 that you referenced the blue wire will be run to the brake output circuit of your 7-way, the white wire will be run to the negative side of your vehicle battery, the black wire will run through a 30 amp circuit breaker to the positive side of your battery and the red wire will be run to the stoplight circuit. This circuit is typically found near the brake pedal, you will want to find a wire that only sees voltage when the brakes...
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  • Is a Circuit Breaker Needed for a Trailer Brake Controller on a 2003 Chevy Silverado Duramax 3500
    If the brake controller is connected to the 2003 Chevy Silverado tow package port (to the left of the brake pedal, second port from the left, top row) using Tekonsha Wire Replacement, # 3015-P, or a similar harness, and the truck came with a factory 7-Way, then the connection is already fused/circuit protected, so the brake controller will not need another circuit breaker. It is possible that a 7-Way was added later and the wiring and circuit breaker you see are related. But, the 2003...
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  • Is there a Fuse Holder Rated for 30 Amp Fuses for Landing Gear on a 5th Wheel Trailer
    I have a solution for you but it isn't a fuse holder! I recommend using a 30 amp circuit breaker, such as # 38630. The benefit is that you won't have to replace fuses should one blow. The breaker will automatically reset once the overload condition is fixed! The fuse holders that we carry, see link, max out at 25 amp fuses. This is do in part to the wiring gauge and terminals used in the fuse holder part.
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  • Troubleshooting 7-Way 12 Volt ACC Circuit Not Functioning on a 2010 Chevy Silverado
    First thing you want to do is test the 12 volt accessory circuit of the 7-way on your truck with a circuit tester like part # PTW2993 to determine if the truck is at fault. This will be the pin in the 1:00 position. If there is no voltage there and you made the connections under the hood of your truck the fuse or relay is most likely bad on your truck and needs to be replaced.
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  • How to Wire a Brake Controller on a 1993 Ford F-250 with a 6-Way Connector
    To install a brake controller in your 1993 Ford F-250, you will need to do some hard wiring. There will be four wires coming from the brake controller. The white wire is ground, the black wire is for 12V power, the blue wire is for the brake output and the red wire is for the stop light switch. I would recommend picking up the Wiring Kit for Electric Brake Controllers, # 5506. This kit includes all of the items that you will need to hard wire your brake controller. First, the white wire...
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  • Will Tekonsha Prodigy P3 Brake Controller Work on Triple Axle Trailers
    You can use the Tekonsha Prodigy P3 Trailer Brake Controller # 90195 on a triple axle trailer with no worries about the wiring getting fried; the P3 is actually able to work with up to four axles and eight brake assemblies. If you are hardwiring the controller in you will need to make sure you use 30-amp circuit breaker # 38630 with your six brake assemblies. The low amperage on the red brake light switch is because it only needs enough amps to light the signals; it will not fry the wiring...
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  • Can a 30 Amp Fuse be Used Instead of a Circuit Breaker When Installing a Trailer Brake Controller
    You can use a 30 amp fuse if you wanted to. The difference is that a circuit breaker like # 38630 or # PK54530 will automatically reset should there be a short or overload. With a fuse you would have to replace it.
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  • Troubleshooting Trailer Brake Controller with No Signal on Black 12V Power Wire
    Typically for brake controllers, the black wire provides 12V power from battery to the brake controller. Since you said there is no signal on the black wire going to the controller, this tells us that there is something wrong with the wire or circuit breaker and means the controller is not getting any power. If the controller has no power, then it cannot send a brake signal back to the trailer brakes. Since this wire comes directly from the battery, there should always be signal on the...
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  • What Amperage Circuit Breaker Should be Used for Brake Controller Install
    That will depend on the amount of brake axles your trailer has. . The 20 amp breaker like # 9506P is for 1 and 2 axle brakes, and the 30 amp like part # 38630 is for 3 and 4 axle brakes
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  • Wiring and Installing an Electric Brake Controller on a 1986 P30 Chassis Motorhome
    Brake controllers are not vehicle specific items so there are not diagrams available for individual vehicles. We do have a help page on installing brake controllers that will walk you through the process, but I will briefly run through the process to give you an idea of what has to be done. Most brake controllers have 4-Wires, typically they are: blue, black, red and white. The white wire is a ground, so it needs to be connected to any solid ground point. The red wire is the stop light...
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