Power Source | McMaster-Carr

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1,090 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

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

Multiple-Voltage DIN-Rail-Mount Power Supplies

Power multiple devices with different voltages at the same time

6 products

Motor-Starting DIN-Rail-Mount Power Supplies

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

10 products

Junction-Box-Mount Power Supplies

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

2 products

Compact Motor-Starting DIN-Rail-Mount Power Supplies

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

9 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

Open-Frame Power Supplies

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

4 products

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

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

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

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

Electrical Testing Power Supplies

Ultra-Low-Noise Bench-Mount Power Supplies

Power sensitive devices while blocking electronic interference

12 products

Programmable Bench-Mount Power Supplies

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

6 products

Bench-Mount Power Supplies

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

6 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

Rack-Mount Power Supplies

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

2 products

Desktop Computer Power Supplies

Power components inside desktop computers

1 product

Other Products

Batteries

Household, button/coin cell, large-cell, and cordless tool batteries

419 products

Battery Chargers

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

53 products

LED Drivers

Deliver the electrical current your LEDs need

49 products

USB Chargers

Power up mobile devices and other electronics

1 product

Battery Testers

Measure the health of rechargeable batteries, or check if it's time to replace disposable batteries

6 products

Backup Power Supplies

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

19 products

Power Generators

Supply power to equipment in the field

7 products

Motor Controller/Drives

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

3 products

Battery Boxes

Store and protect batteries from dirt, debris, and water

8 products

Diodes

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

93 products

Battery Adapters

Use a 20-volt battery in an 18-volt Dewalt cordless tool

1 product

Hydraulic Power Units

Create and supply hydraulic pressure to keep hydraulic systems running

7 products

Battery Charger/Starters

Send a starting current to large-cell batteries and fully charge them

4 products

Solar Panels

Charge large-cell batteries with sunlight

5 products

Battery Jump Starters

Clamp to large-cell batteries to start vehicles and machines when you don't have access to an outlet

5 products

Flush Valve Replacement Parts

Replace virtually any part in the most common flush valve brands

1 product

Rectifiers

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

30 products

Light Retrofit Kits

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

11 products

Shunts

Measure the current flowing through a circuit when the current is too high to only use a meter

5 products

Capacitors

Deliver a burst of electrical energy for a short time to boost power to motors and other equipment

87 products

Air to Hydraulic Power Units

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

8 products

Ethernet Switches

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

5 products

Extension Cords

Extend the reach of power from an outlet

5 products