4-pin Molex connectors have become the standard in computer construction. In this regard, they are currently the most common type of power connection for computers with ATX power supplies. The four-pin connector is a standard introduced by the world-famous Molex company and although you can also find connectors from many other manufacturers, the classic 4-pin connector will be most often associated with the Molex brand. It is a company that manufactures and develops new cables, plugs and electronic connectors.
Original Prusa i3 MK3/S/+ to MK3.9 upgrade kit - for self-assembly
Index: PSA-23192
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ARK connectors
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Socket DC 5.5 x 2.5 mm with terminal connector - 5pcs
DC φ5.5 x 2.5 mm slot (for AC power supply) with a detachable connector that allows you to mount the cable using a screwdriver.
Index: KAB-07209
Index: KAB-07209
Barrier strip for PCBs, 4-pin, 8.5mm raster - 5pcs.
Barrier strip for PCB, 4-pin with 8,5 mm pitch, maximum voltage for contacts is 300 V and current is 20 A.
Index: AKS-10956
Index: AKS-10956
Barrier strip for PCBs, 3-pin, 8.5mm raster
Barrier strap for PCB, 3-pin, with a pitch of 8.5 mm, the maximum voltage for the contacts is 300 V and current is 20 A.
Index: AKS-10955
Index: AKS-10955
DC 5,5x2,1mm socket with quick connection and buttons v2
DC φ5.5 x 2.1 mm socket (for AC adapter) with connector allowing you to mount the cable using the buttons.
Index: KAB-03506
Index: KAB-03506
Grove - 4-pin screw connection
Module from the Grove series with a 4-pin screw connection of 3.5 mm. It is designed to connect the cables with diameter from 0.2 mm to 0.8 mm for the microcontroller. It has...
Index: SEE-11348
Index: SEE-11348
ARK connector raster 5.0mm 3 pin - self-locking - 10 pcs.
Self-locking connector, 3-pin. Pitch of 5 mm. Height: 15.0 mm. Items are sold in sets of 10 pieces.
Index: KAB-09445
Index: KAB-09445
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Plug DC φ5.5 x 2.5 mm with terminal connector - 5pcs
DC φ5.5 x 2.5 mm plug (for power supply unit) with a detachable connector that allows you to mount the cable with a screwdriver. Items are sold in sets of 5 pieces.
Index: KAB-07208
Index: KAB-07208
Socket DC 5.5 x 2.1 mm with terminal connector
DC φ5.5 x 2.1 mm slot (for power supply unit) with a detachable connector that allows you to mount the cable using screwdriver.
Index: KAB-07210
Index: KAB-07210
Electric cube self-locking 3 pin 2mm 10A/380V
The 3-pin self-locking electrical cube allows for the connection of cables with a voltage of 380 V with a current flow of up to 10 A . The connection grid is 10 mm, the...
Index: KAB-03716
Index: KAB-03716
Electric cube 2pin 32A/400V - orange - 5pcs.
The 2-pin electric cube allows you to connect the wires with a voltage of 400 V with the flow of current up to 32 A in a simple way, without the need of using the tools.
Index: KAB-06900
Index: KAB-06900
Electric cube self-locking 2 pin 2mm 10A/380V - 10 pcs
The 2-pin electric self-locking cube allows you to connect the wires with a voltage of 380 V with the flow of current up to 10 A. Connection pitch is 10 mm, the maximum...
Index: KAB-03717
Index: KAB-03717
Electric cube 12pin 12mm 20A/250V
The 12-pin electric cube allows you to connect the wires with a voltage of 250 V with the flow of current up to 20 A. Connection pitch is 10.5 mm, the maximum diameter of the...
Index: KAB-06896
Index: KAB-06896
Electric cube 12pin 6mm 5A/250V
The 12-pin electric cube allows you to connect the wires with a voltage of 250 V with the flow of current up to 5 A. Connection pitch is 8.5 mm, the maximum diameter of the...
Index: KAB-03718
Index: KAB-03718
ARK connector raster 3,5 mm 3 pin (+) - 10pcs
Screw, clamp, 3-pin conector. Pitch of 3.5 mm. Height of 8.4 mm. The screw for the cross screwdriver (+). Price for 10 pcs of conectors.
Index: KAB-02555
Index: KAB-02555
Electric cube 12pin 8mm 10A/250V
The 12-pin electric cube allows you to connect the wires with a voltage of 250 V with the flow of current up to 10 A. Connection pitch is 10 mm, the maximum diameter of the...
Index: KAB-06895
Index: KAB-06895
Electric cube 12pin 4mm 3A/250V
The 12-pin electric cube allows you to connect the wires with a voltage of 250 V with the flow of current up to 3 A. Connection pitch is 8 mm, the maximum diameter of the cable...
Index: KAB-06894
Index: KAB-06894
ARK connector 5mm 3 pin (+) - 5pcs
Screw, clamp, 3-pin conector. Pitch of 5 mm. Height of 8.4 mm. The screw for the cross screwdriver (+). Price for 5 pcs of conectors.
Index: GRL-13565
Index: GRL-13565
ARK connector KF301 raster 5,0mm 3 pin (-) - 5pcs
Screw, clamp, 3-pin conector. Pitch of 5 mm. Height of 10 mm. The screw for the flat screwdriver (-).
Index: KAB-00808
Index: KAB-00808
ARK connector 5mm 2pin (+) - 10pcs
Screw, clamp, 2-pin conector. Pitch of 5 mm. Height of 8.4 mm. The screw for the cross screwdriver (+). Items are sold in sets of 10 pieces.
Index: GRL-13564
Index: GRL-13564
Connector ARK4 connect wires to the breadboard with screw connectors. Suitable for standard breadboards available in our store.
Index: MOD-01469
Index: MOD-01469
DC 5.5x2.5mm socket with quick connection
DC φ5.5 x 2.5 mm socket (for AC adapter) with connector allowing you to fix the cable with a screwdriver.
Index: KAB-05819
Index: KAB-05819
ARK connector 2.54mm raster 2 pin (-) - 10pcs
Screw, clamp, 2-pin conector. Pitch of 2.54 mm. Height of 8.5 mm. The screw for the flat screwdriver. Items are sold in sets of 10 pieces.
Index: KAB-09443
Index: KAB-09443
ARK connector 2.54mm raster 3 pin (-) - 10pcs
Screw, clamp, 3-pin conector. Pitch of 2.54 mm. Height of 8.5 mm. The screw for the flat screwdriver. Items are sold in sets of 10 pieces.
Index: KAB-09444
Index: KAB-09444
DC 5,5x2,1mm socket with quick connection
DC φ5.5 x 2.1 mm slot (for AC adapter) with the connector allowing you to mount the cable with a screwdriver.
Index: KAB-01804
Index: KAB-01804
See also
- Connectors - goldpin
- Pogo Pin
- Electric cubes
- Quick couplings
- DC plugs and sockets
- BNC connectors
- BLS connectors
- D-SUB connectors
- Connectors - FSF / FPC ZIF
- Amphenol FCI connectors
- Banana connectors
- Crocodile cables
- Connectors - 4-pin
- RJ network connectors
- USB connectors
- Jumpers
- Wire tips
- SMA connectors
- Mounting connectors
- Connectors - raster 2.5 mm
- Connectors - raster 2.54 mm
- 230 V network sockets
- IDC connectors
- Slip connectors
- Molex connectors
- Connectors
It is worth noting that there are several types of four-pin plugs. In this category, you can buy 4-pin Molex connectors, four-pin plugs for printing, pins for sockets with different rasters, SATA adapters and other power cables. In our offer you will find everything you need to be able to use these solid connectors in your project. You can choose between cable-mounted and PCB-soldered versions. The huge popularity of Molex connectors results from excellent electrical parameters as well as simple, but well-thought-out design. Check out all the products below now!
How do Molex 4-pin connectors work? Security basics
The contact thickness of Molex connectors, perfectly selected by the manufacturer, allows the transfer of currents in the range of 7A. This value is sufficient for many devices we build. The Molex connector does not allow reverse connection of the plug to the socket. Thanks to this, we are dealing with an additional security function. The lack of possibility to reverse connection of the plug with the socket means that it is protected against short-circuits and reverse polarity of the supply voltage. It is crucial for systems not equipped with appropriate protections. In turn, the reversal of the poles of the supply voltage is most often catastrophic for electronic systems, and in extreme cases it may lead to damage to the power supply, overheating of the wires or even to a fire.
Practical application of Molex connectors
Today, 4-pin connectors are slightly less used than they used to be, but they are still very popular. A simple, four-pin design, cables with an exceptionally comfortable plastic plug, are features that make it easy to recognize products such as 4-pin Molex connectors. The four wires have different functions. The two middle ones, black in color, ensure safety (electric mass). On the sides there are energy supply wires - red and yellow. Most often, the former has +5 V DC, and the latter is +12 DC.
The pitch of Molex connectors for installation on printed circuit boards is 5.08 mm, which significantly facilitates their use in new projects. A significant advantage of Molex 4-pin connectors is their compatibility with ATX computer power supply wiring harnesses. Thanks to this functionality, we can use these efficient and popular ATX power supplies in our own projects without having to recover connectors from old devices. Using power supplies just becomes easier thanks to Molex connectors and definitely more affordable for everyone. What's more, we can choose both an angular and a straight version, which makes it easy to adjust the direction of the connector operation to the dimensional conditions of the housing of our device.
Molex 4-pin connectors
4-pin Molex connectors are appreciated by both beginners and the most advanced electronics and DIY enthusiasts. This is due to the fact that their use is relatively wide, and the simple and safe design means that there are no installation problems. When designing a PCB, remember to use mounting holes with the correct diameters. Molex connectors for mounting on wires consist of a plastic housing and contacts that must be crimped on the isolated ends of the wires. When selecting the pins, pay attention to their type - the plug works with male pins, and the socket should be connected with female pins. Detailed information on this subject can be found in the technical documentation available on our website. Also, remember to carefully check the product card of the selected connector to find out the detailed technical parameters. Choose the best connectors in Botland now! If so, we will be happy to help you with your choice!