Breadboard Power Supply 5V/3.3V Dual Voltage with Fuse Protection
Best power solution for electronics hobbyists building low-current breadboard prototypes.
Power your low-current prototyping circuits efficiently with this compact breadboard power supply module. It accepts input power from either a standard 2.1mm x 5.5mm DC barrel jack or a Micro USB port, operating between 7V and 12V DC. This fully assembled board delivers stable dual output voltages of 5.0V and 3.3V, selectable via a jumper. For added safety during USB operation, it includes a PTC resettable fuse to protect against overcurrent conditions. It is an essential, ready-to-use component for hobbyists and engineers powering circuits up to 500mA total current.
$5.99
Owner Satisfaction
4.5
/ 5
Category Rank
392
/ 775
#392 in Circuit Board Accessories
Price vs Category Average
-77%
Below average
Input Voltage
712
/ to V DC
Who it's for
- Makers prototyping with microcontrollers like Arduino and ESP modules
- Hobbyists prioritizing safety for their sensitive electronic components
- Beginners seeking a clean, wire-free breadboard setup
Who should skip it
- Users wanting a simple, USB-powered solution
- Engineers powering high-draw components like motors or LED arrays
- Prototypers working on crowded, space-constrained breadboard layouts
Performance breakdown
Breadboard Compatibility
Designed to seat perfectly across standard breadboard power rails.
Power Versatility
Dual input options provide excellent flexibility for various workbench setups.
Safety Integration
Resettable PTC fuse offers reliable protection against accidental short circuits.
Voltage Flexibility
Jumper-selectable outputs handle common logic levels with ease.
Current Capacity
Limited to 500mA, making it unsuitable for high-power motor projects.
Build Quality
Fully assembled and ready for immediate use right out of the box.
Key Specs
Input Voltage
7 to 12V DC
Output Voltages
3.3V (max 100mA) and 5.0V (max 500mA)
Maximum Combined Current
500mA
Input Ports
Standard 2.1mm x 5.5mm DC barrel jack and Micro USB port
Protection
PTC resetable fuse for USB port overcurrent protection
Accessory Type
Power Supply Module
Brand
MakerSpot
Features
- Dual output voltages (5.0V and 3.3V)
- Selectable output voltage via 2-pin shunt jumper
- Power input via DC barrel jack or Micro USB
- PTC resettable fuse for overcurrent protection
- Fully assembled and tested
- Supports low current prototyping circuits
What customers say
Customers highly value this power supply for its reliability and essential safety features. The dual voltage output, providing both 5V and 3.3V, is a major convenience that simplifies prototyping setups by removing the need for extra power bricks. Users particularly praise the integrated fuse protection, recognizing it as a crucial safeguard against shorts common in breadboard work, setting it apart from basic alternatives. While the core performance and value are excellent, some users noted minor inconsistencies with physical fit across different breadboards and found the indicator lights overly bright during extended use. Overall, this unit is strongly recommended for electronics enthusiasts seeking a dependable and safe power solution.
Know before you buy
No, you should only use one power source at a time. Using both simultaneously could damage the module or your power source.
The module supports a maximum combined output current of 500mA. Please note that the 3.3V output is limited to 100mA, while the 5.0V output can handle up to 500mA.
You can toggle the output voltage using the 2-pin shunt jumper located on the board. Simply move the jumper to the pins corresponding to your desired voltage.
The module includes a PTC resettable fuse specifically for the USB input. If an overcurrent condition occurs, the fuse will trip to protect your components and will automatically reset once the fault is removed and the module cools down.
Yes, the MakerSpot breadboard power supply arrives fully assembled and tested, so it is ready to plug directly into your breadboard right out of the box.
Still have a question?
Ask Hayley anything about this product before you decide.