Machine Switches | McMaster-Carr

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4,451 Products

Electrical

Manual Switches

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

Manual Switch Contact Blocks

Manual Switch Contact Blocks

Mount to switches to control electrical circuits as you move the switch

Disconnect Switches

Disconnect Switches

Make sure equipment stays turned off during inspection and maintenance

Motor Switches

Turn motors, lighting, and electric heat circuits on and off

Limit Switches

Turn equipment on or off when objects touch the actuator; often used for conveyors and bin filling

Timer Switches

Automatically turn electrical equipment on or off after a set interval

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

Potentiometers

Control speed, volume, and light intensity by varying electrical flow; also known as rheostats

Switch Guards

Prevent people from activating switches accidentally

Motor Starter Overload Protectors

Motor Starter Overload Protectors

Upgrade your motor starter protector to use less energy and emit less heat

Motor Starters

Turn motors on and off and protect them from current overloads

Motor Voltage Monitors

Motor Voltage Monitors

Protect electric motors by cutting power when faults occur

Snap-Acting Switches

Snap-Acting Switches

Open and close circuits quickly to minimize arcing and sticking; often used as door-open indicators

Bumper Switches

Bumper Switches

Signal when overhead doors close or items reach the end of conveyors

Magnetic Switches

Magnetic Switches

Actuate when a magnet comes within sensing distance; often used to detect when doors or windows open

Transistors

Boost weak electrical signals and rapidly control data transmission

Circuit Breakers

Circuit Breakers

Reusable way to interrupt circuits when they overload or short

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

Terminals

Attach to the end of wire to connect circuits in control panels, motors, and small machines

Electrical Connectors and Cords

Electrical Connectors and Cords

Supply power to equipment by combining plugs, sockets, receptacles, and cords

Building and Machinery Hardware

Indicating Knobs

Indicating Knobs

Control devices and view settings at a glance

Fluid Handling

Float Switches

Start process equipment such as pumps and motors when the liquid in your tank reaches the float

Pressure Switches

Pressure Switches

Activate controls, set off alarms, and power equipment when a set pressure is reached

Float Switch Relays

Float Switch Relays

Amplify current to actuate equipment that has a higher current rating than your float switch

Vacuum Switches

Vacuum Switches

Activate controls, set off alarms, and power equipment when a set vacuum is reached

Level Sensor Switches

Level Sensor Switches

Activate equipment by detecting the liquid level in a tank

Flow Switches

Turn equipment on or off when flow rate reaches a set point

Pressure and Vacuum Switches

Pressure and Vacuum Switches

Activate controls, set off alarms, and power equipment when a set pressure or vacuum is reached

Material Handling

Tablet Holders

Equip tablets with safety switches to halt robots, conveyors, and other machinery in an instant

Robot Safety Padding

Robot Safety Padding

Trigger an emergency stop when robot arms contact a worker or object

Heating, Ventilation, and Air Conditioning

HVAC Switches

Control and monitor airflow in HVAC systems automatically

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