Electrical Adapters | McMaster-Carr

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Electrical Connection

Apple-Compatible 30 Pin

Flat-Pin Mini Thermocouple Connector

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1,986 Products

Electrical Power, Networking, and Controlling

Extension Cords

Extend the reach of power from an outlet

39 products

USB Cords

Transfer data between computers, printers, and mobile devices

212 products

Power Cords

Connect equipment and devices to a power source

45 products

Metric Circular Cords

Send power and control signals to equipment with metric connections

21 products

Thunderbolt Cords

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

2 products

Video Adapter Cords

Send video between devices with different connections

8 products

Power Connectors

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

72 products

Metric Circular Adapters

Join connectors of different sizes, configurations, or types

24 products

USB Connectors

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

62 products

RJ45 Adapters

Connect two Ethernet cords together

48 products

Coaxial Adapters

Join coaxial cords that have the same gender or different connection types

23 products

Molex Connectors

Plugs, sockets, and housings for making Molex connections

19 products

D-Sub Adapters

Link computer equipment with different connection types

28 products

HDMI Adapters

Convert one HDMI size or style to another

14 products

DisplayPort Connectors

Connect two DisplayPort cords of the same gender and connection type

1 product

Video Adapters

Convert from one video connection to another

7 products

Fiber-Optic Connectors

Join fiber-optic cords that have the same gender and connection type

10 products

Mini Adapters

Create a branch off a main cord or connect multiple devices with mini connections to a single port

8 products

Audio Adapters

Connect two stereo cords or extend a connection

3 products

Mini Connector Thread Adapters

Join two connectors that both have internal threads

6 products

USB Chargers

Power up mobile devices and other electronics

27 products

Terminal Adapters

Convert wire terminals from one connection type or gender to another

7 products

USB Extenders

Increase the reach of USB devices with a transmitter and receiver

3 products

Terminal Splitters

Divide one male quick-disconnect connection into two

4 products

Data Connection Hubs

Add USB, DisplayPort, or HDMI ports to your computer to connect multiple device

3 products

Voltage Adapters

Change AC voltage to DC voltage to power a device

284 products

Power Supplies

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

259 products

Transformers

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

237 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

Logic Level Converters

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

1 product

Phase Converters

Generate three-phase output power from a single-phase input

11 products

Current Conditioners

Lower current flows to levels that work with panel monitors and other electrical measuring equipment

33 products

Rectifiers

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

30 products

Battery Terminal Adapters

Convert one battery terminal style to another

6 products

Fuse Block Reducers

Adapt fuse blocks designed for large, high-amp fuses to hold small, low-amp fuses

8 products

Stepper Motor Drives

Control the speed and position of stepper motors

6 products

Circuit Board Voltage Regulators

Power circuits from a high-voltage source without frying your system

15 products

Diodes

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

93 products

Heating, Ventilation, and Air Conditioning

Temperature-Controlled Outlet Adapters

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

3 products

Lighting

Light Retrofit Kits

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

11 products

Light Socket Adapters

Convert light fixtures to accept different bulbs

5 products

LED Drivers

Deliver the electrical current your LEDs need

49 products

Light Starters

Replace or add starters in magnetic ballasts

7 products

Measuring and Inspecting

Test Lead Adapters

Change tip styles to take different measurements with the same test leads

6 products

Fluid Handling

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

155 products

Thermocouple and RTD Mounts

Join thermocouple connectors and probes that have different connection types

18 products

Thermocouple Connector Adapters

Convert round-pin male connectors to flat-pin male connectors

10 products