Distribution Boards | McMaster-Carr

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1,094 Products

Electrical

Circuit Breaker Boxes

Circuit Breaker Boxes

Hold a series of circuit breakers in line; also known as load centers

Circuit Breaker Box Filler Plates

Circuit Breaker Box Filler Plates

Conceal live electrical components in circuit breaker boxes to prevent injury and damage

Circuit Board Voltage Regulators

Circuit Board Voltage Regulators

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

Varistors

Protect sensors, programmable logic controllers, and other small components from electrical surges

Diodes

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

Terminal Blocks

Terminal Blocks

Mate with terminals to complete circuits in control panels, motors, and small machines

Electrical Plugs

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

Electrical Cords

Electrical Cords

Connect equipment and devices to a power supply

Electrical Connector Contacts

Electrical Connector Contacts

Crimp wire into pins and sleeves to create custom Molex or Amphenol connectors

Circuit Board Headers

Circuit Board Headers

Make quick connections to development boards and other circuit boards when prototyping

Circuit Board Terminals

Circuit Board Terminals

Connect wire to circuit boards

Development Board Cords

Development Board Cords

Connect your development board to components such as sensors and actuators

Electrical Cable

Electrical Cable

Make multi-wire connections; generally for higher voltages and longer distances than wire

Electrical Sockets

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

Electrical Wire

Electrical Wire

Make single-wire connections; generally for lower voltages and shorter distances than cable

Potting Boxes

Fill with potting compound to protect electronic assemblies from dust, moisture, and vibration

Circuit Boards

Create your own circuit board designs by adding components

Development Boards

Development Boards

Prototype electronics and build simple automation systems by configuring inputs and outputs

Single-Board Computers

Single-Board Computers

Combine the functionality of a PC with the flexibility of a development board’s inputs and outputs

Transformers

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

Electronic Component Kits

Electronic Component Kits

Include diodes, rectifiers, and transistors to convert current or amplify electronic signals

Circuit Board Capacitors

Circuit Board Capacitors

Store electrical energy then release it all at once to briefly boost power to circuit boards

Rectifiers

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

Inductors

Resist changes in current to protect circuit board components from surges

Measuring and Inspecting

Decade Boxes

Test and troubleshoot circuits without needing to solder capacitors or replace resistors

Fabricating and Machining

Vises

Secure workpieces in place

Electronic-Component Positioning Stands

Electronic-Component Positioning Stands

Pin components against a circuit board to free up your hands for soldering

Lighting

Light Bulbs

Standard household, miniature, compact, tubular, ultraviolet, infrared, and blacklight bulbs

Light Transmitters

Light Transmitters

Light up small and hard-to-reach areas such as the inside of models, prototypes, and circuit boards

Light Pipes

Concentrate and direct light from the bulb on a circuit board to a display

Communication

Display Screens

Display Screens

Display text, numbers, symbols, and other information from your electronics

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)