Mechanical switches are one of the most common electrical devices as they allow power to be turned on or off.
Switches are rated for the amount of current and voltage they are suitable for. For switching low power and low currents like using a switch as an input to a microcontroller just about any switch will do. When using a switch to control power from a battery or turn a motor on then care should be taken to ensure the switch is rated to the expected current. For high power uses an electronic solid state switch can be better.
Mechanically switches are varied. Momentary switches are either on or off while you hold them like buttons while others will maintain the state until switched back like toggles or sliders. Like relays, switches can be SPST (single pole single throw), DPDT (double pole double throw) or lots of other variations.
Code: SKU-000216
This is a small device called a reed switch. When the device is exposed to a magnetic field the two ferrous materials inside the switch pull together and the switch closes. When the magnetic field is removed the reeds separate and the switch opens. This makes for a great non-contact switch. More Details...
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Code: SKU-000732
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Code: SKU-000915
These panel-mounting rocker switches have built-in indicator lights to let you know when your switch is engaged. They mount into a 20.2mm diameter hole and are rated up to 16A @ 12v. More Details...
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Code: SKU-000256
Your project will probably need an on/off switch. If you plan to house the project in an enclosure we found this great rocker switch to help you out. More Details...
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Code: SKU-000908
This little round on/off toggle switch is rated up to 10A at 125VAC and can be panel mounted in a 20mm diameter hole. It'll also look pretty slick in your project. More Details...
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Code: SKU-002572
This single-pole, double-throw (SPDT) rocker switch makes a great on/off power switch. It is rated for 10 A at 125 VAC and 6 A at 250 VAC. More Details...
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Code: SKU-002105
This is a single pole 10 position rotary switch able to select up to 10 different states in a durable package. Unlike our other rotary switch this model is much more robust and capable of handling larger currents and voltages. More Details...
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Code: SKU-001067
A simple slide potentiometer can go a long way. Rated at 10KOhm and 0.1W. Comes with solder tab connections. The pot has an overall travel of 30mm and has two mounting holes on top.Dimensions: 9.5mm x 45mmDocuments:Datasheet (C3031N-1A2-B10K-GP) More Details...
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Code: SKU-001066
A simple slide potentiometer can go a long way. Rated at 10KOhm and 0.1W. Comes with solder tab connections. The pot has an overall travel of 20mm and has two mounting holes on top.Dimensions: 9.5mm x 35mmDocuments:Datasheet (C2031N-1A2-B10K-GP) More Details...
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Code: SEN-10021
This single-pole, double-throw (SPDT) momentary switch can be used as a general-purpose micro switch or tactile bump sensor for your robot. The switch body dimension is 20.0 x 6.4 x 10.2 mm, and the 16.3mm lever arm is has a roller at the tip. More Details...
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