Power Supplies | McMaster-Carr

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3,992 Products

Power Supplies

AC to DC Power Supplies

DIN-Rail-Mount Power Supplies

Cost-effective for clean environments with a stable supply of electricity

27 products

Power Supplies

Convert your facility's AC voltage to power equipment that runs on DC voltage

56 products

Heavy Duty DIN-Rail-Mount Power Supplies

Built to last in marine, heavy industrial, and other tough environments

22 products

Low-Profile DIN-Rail-Mount Power Supplies

Under 2 1/2" deep to fit in shallow enclosures often found in automation systems

15 products

Heavy Duty Motor-Starting DIN-Rail-Mount Power Supplies

Power equipment that requires high start-up current in harsh environments

23 products

Motor-Starting DIN-Rail-Mount Power Supplies

Cost-effective power for equipment that requires high start-up current in clean areas

10 products

Compact Motor-Starting DIN-Rail-Mount Power Supplies

Fit into cramped enclosures to power equipment that requires high start-up current

9 products

Multiple-Voltage DIN-Rail-Mount Power Supplies

Power multiple devices with different voltages at the same time

6 products

Sealed Power Supplies

Fully sealed to block out dust and water so there’s no need for an enclosure

5 products

Remote On/Off Power Supplies

Remotely power devices only when needed to save energy

34 products

Junction-Box-Mount Power Supplies

Mount directly to standard junction boxes, no bulky plug-in adapters needed

2 products

Open-Frame Power Supplies

With no housing, these fit inside devices where enclosed versions can’t

4 products

AS-Interface-Network DIN-Rail-Mount Power Supplies

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

1 product

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)

5 products

Status-Indicating DIN-Rail-Mount Power Supplies

Track voltage, current, and other data from your PC, PLC, or the built-in digital display

4 products

Electrical Testing Power Supplies

Ultra-Low-Noise Bench-Mount Power Supplies

Power sensitive devices while blocking electronic interference

12 products

Bench-Mount Power Supplies

Test and design a wide range of electrical circuits right at your workbench

6 products

Programmable Bench-Mount Power Supplies

Control and monitor voltage, current, and power outputs remotely from your computer

6 products

Rack-Mount Power Supplies

Mount into standard electronics racks to power multiple devices and keep benchtops tidy

2 products

Fixed-Voltage Bench-Mount Power Supplies

Convert 120V AC to 13.8V DC, a common voltage for radio transmitters and battery chargers

3 products

Desktop Computer Power Supplies

Power components inside desktop computers

1 product

AC to DC Electromagnet Transformers

High-Speed AC to DC Electromagnet Transformers

Instantly reverse the current to release your electromagnet's hold

3 products

AC to DC Electromagnet Transformers

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

3 products

Other Products

Voltage Adapters

Change AC voltage to DC voltage to power a device

284 products

Transformers

Raise or lower voltage to meet the needs of an individual circuit

237 products

LED Drivers

Deliver the electrical current your LEDs need

49 products

USB Chargers

Power up mobile devices and other electronics

21 products

Power Converters

Connect power supplies to equipment that requires a different input voltage

50 products

Inverters

Transform DC voltage to power devices that run on AC voltage; prevent overload damage

12 products

Power Cords

Connect equipment and devices to a power source

263 products

Logic Level Converters

Translate signals between development boards, sensors, and other components with different voltages

1 product

Backup Power Supplies

Transfer power to a built-in battery during partial and complete outages

19 products

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

1,544 products

Battery Chargers

Charge everything from large-cell to cordless tool to household batteries

54 products

Outlet Strips

Plug in multiple devices to power them from a single outlet

113 products

Power Supply Conditioners

Raise or lower current to keep it at a stable output level during incoming dips and surges

7 products

Motor Controller/Drives

Determine settings such as steps, direction, and step resolution from one device

3 products

USB Cords

Transfer data between computers, printers, and mobile devices

254 products

Diodes

Route current in one direction and block it in the other to protect sensitive electronics

93 products

USB Connectors

Plugs, sockets, receptacles, and adapters to make USB connections

76 products

Rectifiers

Convert AC voltage to a constant DC voltage on a circuit board

30 products

Ethernet Switches

Expand your data network by connecting computers, printers, and servers

5 products

Air to Hydraulic Power Units

Power a hydraulic cylinder with air to avoid the setup, cost, and mess of hydraulic fluid

8 products

Extension Cord Reels

Keep extension cords easy to access without creating a tripping hazard

94 products

Wireless Charging Pads

Charge smartphones with direct contact—no need to plug them in

3 products

Hydraulic Motors

Power equipment where electric motors aren't safe and air-powered motors aren't strong enough

6 products

Temperature-Controlled Outlet Adapters

Automatically turn heating and cooling devices on and off as temperatures rise and fall

3 products

Thunderbolt Cords

Transmit data and video at high speeds between PCs, mobile devices, and displays

2 products

Outlet Strip Mounts

Snap in outlet strips for quick mounting on flat surfaces

4 products

Extension Cords

Extend the reach of power from an outlet

387 products

Hydraulic Actuators

Turn heavy loads to do everything from opening tank doors to pivoting conveyors

16 products

Light Retrofit Kits

Upgrade to energy-efficient LED lights without completely replacing old fixtures

11 products

Solenoid Valve Connectors

Sockets and receptacles to connect solenoid components, such as valves and motors

17 products

Workstation Lights

Mount above your workspace to brighten your work and add light where ceiling lights can't reach

11 products