Fuses and Circuit breakers
​(Over-current Protection Device)

​(I make a commission for purchases made through the links below)

Battery Bank to Inverter Main fuse

MegaFuses work great and cost very little money, and are preferred over the typical ANL fuse you would find from most solar distributors. Unlike ANL, Megafuses can be used with 48V systems and have a higher disconnect amperage. Stick to these fuses if you do not want to have problems with your 12V system.

​(if you are building a large 48V system, scroll down this page to "T Class Fuse)

How to size an MegaFuse for 12V inverters (or any appliance really): 
  1. Take the continous wattage rating on the inverter and divide it by the voltage it operates at (12V)
  2. Let's say you have a 1500W 12V inverter. The maximum amperage it requires is 1500(W)/ 12(V) = 125 (Amps)
  3. Take the maximum current (125Amps in this situation) and multiple it by 1.25. 125 X 1.25 = 156.25
  4. You need a fuse that can handle 156.25A. But they only make 150A and 200A fuses. So what you will need to do is round up to 200A fuse. Be sure to use inverter cables that can handle 200A, so if a fault were to occur, the cables can carry 200A to the fuse. 


100 Amp Fuse and Holder

150 Amp Fuse and Holder

175 Amp Fuse and Holder

200 Amp Fuse and Holder

250 Amp Fuse and Holder

300 Amp Fuse and Holder
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48V Lithium Battery Inverter Fuse: Class T

The ANL fuse above works great for most 12V systems...

But if you are building a large 48V lithium based solar power system, the arc that it can create in a fault can be massive! So large in fact, that the ANL fuse above will not save your system if a fault were to occur.

In this instance, you will need a T Class fuse. This fuse can work on any size battery bank, and will protect your system better than anything else around. 

These are more expensive than an ANL fuse, but if you are using a 48V battery bank, these are required!

Click here for a 200A T Class Fuse and Holder
​
Click here for a 300A T Class Fuse and Holder
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12V Fuse Block

Connect 12 volt appliances here with this fuse block. Easy to use and easy to install! These are great. 

Click here to purchase

Inline fuses for 12v DC appliances

Top Quality Inline fuse holder with copper wire.

Do not buy the cheap chinese ones, they will melt if you push more than 15 amps through them. You have been warned. Buy the high quality ones only!

Click Here
Assorted standard size fuses for fuse block and inline fuse holders

Click Here

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