DC Voltage Power Units | McMaster-Carr

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741 Products

Electrical Transforming and Conditioning

DIN-Rail Power Supplies

Heavy Duty DIN-Rail Power Supplies

Heavy Duty Motor-Starting DIN-Rail Power Supplies

Made of durable components for a long life in demanding conditions, these power supplies convert AC voltage to power DC motors and other devices that require high start-up current.

Motor-Starting DIN-Rail Power Supplies

Convert AC voltage to power DC motors, solenoid valves, charging capacitors, and other devices that require large start-up current.

Compact Motor-Starting DIN-Rail Power Supplies

Sized to fit into small and cramped enclosures, these compact power supplies mount onto DIN rails to convert AC to DC voltage. Despite their size, they're designed to power motors, solenoid valves, and other devices that require large start-up current.

Low-Profile DIN-Rail Power Supplies

Less than 2 1/2" deep, mount these power supplies to a DIN rail in shallow enclosures and control panels, such as those used in building automation systems.

Multiple-Voltage DIN-Rail Power Supplies

Power multiple devices with different voltages at the same time—these power supplies take AC voltage and convert it into several DC voltages at once.

AS-Interface DIN-Rail Power Supplies

Send both electrical and data signals to equipment on AS-interface networks.

Status-Indicating DIN-Rail Power Supplies

Monitor voltage, current, remaining life, and other maintenance data from your PC, PLC, or by glancing at the digital display. There's no need to inspect these power supplies with multimeters or other test equipment.

Power Supplies

To power electronics ranging from simple prototypes to complex industrial automation and process control equipment, these general purpose power supplies convert AC to DC voltage.

Open-Frame Power Supplies

Convert AC to DC voltage to power equipment in tight spaces—since these power supplies don’t have an enclosure, you can use them inside devices where enclosed power supplies can’t fit.

Sealed Power Supplies

Completely sealed and protected from dust and water, these power supplies don't need a separate electrical panel or enclosure. Instead, mount them directly to machine tools, process control equipment, conveyors, and other equipment found in harsh industrial areas.

Remote On/Off Power Supplies

Save power by switching these power supplies on and off remotely, so devices only run when they're needed.

Junction-Box-Mount Power Supplies

Convert AC voltage to DC voltage without plugging a bulky adapter into your outlet. These power supplies come mounted onto a cover that fits a standard junction box, also known as an outlet box.

Logic Level Converters for Development Boards

Communicate between a development board and other components, such as sensors and actuators, that use digital signals at a different voltage.

DIN-Rail DC to DC Converters

Mount these DC converters to DIN rails on fixtures such as industrial cabinets and electrical panels. By converting voltages, they let you connect power supplies to equipment that requires a different input voltage.

DC to DC Converters

When your power supply sends out DC power at a higher voltage than you need, change to the proper voltage with these converters.

AC to DC Electromagnet Transformers

Flip the switch to reverse the magnetic current and release your electromagnet's hold.

High-Speed AC to DC Electromagnet Transformers

Suitable for high-speed automated applications, these transformers reverse the magnetic current and release your electromagnet's hold faster than other electromagnet transformers.

Electrical Testing Power Supplies

Ultra-Low-Noise Benchtop Power Supplies

Change AC voltage to DC voltage to power extremely sensitive audio, measuring, and testing devices while keeping electronic interference—often called output or ripple noise—from passing on to the device.

Benchtop Power Supplies

Convert AC voltage into the DC voltages needed to test, design, and prototype a wide variety of electrical circuits and equipment.

Fixed-Voltage Benchtop Power Supplies

No need to adjust the voltage on these power supplies—they’re specifically designed to convert 120V AC to 13.8V DC.

Programmable Benchtop Power Supplies

Use your computer to remotely control these power supplies that convert AC voltage to DC voltage for powering electronics from simple prototypes to advanced testing equipment.

Rack-Mount Power Supplies

Mount these power supplies into standard 19”-wide electronics racks, which can hold multiple electronic devices and keep your benchtop clear.

Electrical Wiring and Connecting

AC to DC Adapter Cords

Plug these adapter cords into a standard outlet and they change AC voltage to DC voltage.

Detachable-Cord AC to DC Adapters

Couple these adapters with a cord that matches your outlet and length requirements to run DC-powered electronics.

International AC to DC Adapter Cords

Swap the plug to match the outlet of the region you’re in instead of using separate cords for each country. These adapter cords convert AC voltage to power DC electronics.

Medical-Grade AC to DC Adapters

To run DC-powered lab and medical equipment from your outlet, add a power cord with the plug style and length you need. These adapters meet strict IEC, UL, or ANSI/AAMI standards for use with medical devices.

EMI Filtering IEC Connectors
with Integrated Power Supply

Change AC voltage to DC voltage and bring power to electronic devices while protecting them from harmful electromagnetic interference (EMI).

LED Drivers

Send electricity to LED lights while protecting them from voltage and current fluctuations.

Electronic Prototyping

Rectifiers

Convert AC voltage to DC voltage on a circuit board.

Voltage-Regulating Diodes

Power sections of a circuit with a specific voltage. Also known as Zener diodes, these diodes are often used as a reference point in amplifiers and other voltage-sensitive circuits.

Diodes

Keep the current in a circuit flowing in one direction.

Surge-Suppressing Diodes

Protect sensitive electronics from surges in voltage. Also known as transient voltage suppressor (TVS) diodes, these diodes limit voltage in your circuit and divert the excess away.

Fast-Acting Diodes

Limit current to a single direction in circuits that power on and off frequently. Also known as Schottky diodes, these diodes switch faster than other diodes.

Diode Assortments

Control voltage and current in circuits with a variety of diodes.

Desktop Computer Power Supplies

Convert AC voltage to DC voltage to power components inside desktop computers.

Power Supplies for Programmable Logic Controllers

Designed for PLCs, these power supplies attach to your processor to bring your automated system to life. Once connected, they take in the voltage from your facility, convert and regulate it, and send out stabilized power to the rest of your equipment.

Electrical Transforming and Conditioning

DIN-Rail Power Supplies

Heavy Duty DIN-Rail Power Supplies

Heavy Duty Motor-Starting DIN-Rail Power Supplies

Motor-Starting DIN-Rail Power Supplies

Compact Motor-Starting DIN-Rail Power Supplies

Low-Profile DIN-Rail Power Supplies

Multiple-Voltage DIN-Rail Power Supplies

AS-Interface DIN-Rail Power Supplies

Status-Indicating DIN-Rail Power Supplies

Power Supplies

Open-Frame Power Supplies

Sealed Power Supplies

Remote On/Off Power Supplies

Junction-Box-Mount Power Supplies

Logic Level Converters for Development Boards

DIN-Rail DC to DC Converters

DC to DC Converters

AC to DC Electromagnet Transformers

High-Speed AC to DC Electromagnet Transformers

Electrical Testing Power Supplies

Ultra-Low-Noise Benchtop Power Supplies

Benchtop Power Supplies

Fixed-Voltage Benchtop Power Supplies

Programmable Benchtop Power Supplies

Rack-Mount Power Supplies

Electrical Wiring and Connecting

AC to DC Adapter Cords

Detachable-Cord AC to DC Adapters

International AC to DC Adapter Cords

Medical-Grade AC to DC Adapters

EMI Filtering IEC Connectorswith Integrated Power Supply

LED Drivers

LED Drivers

Electronic Prototyping

Rectifiers

Voltage-Regulating Diodes

Diodes

Surge-Suppressing Diodes

Fast-Acting Diodes

Diode Assortments

Desktop Computer Power Supplies

Desktop Computer Power Supplies

Power Supplies for Programmable Logic Controllers

Power Supplies for Programmable Logic Controllers

EMI Filtering IEC Connectors
with Integrated Power Supply