Switches, Buttons, And Relays

Switches, Buttons, And Relays

Switches, buttons and relays provide the fundamental control points for electronic and robotic systems. Momentary and latching types let you select or toggle power sources, trigger functions, or detect physical contact, making them ideal for power‑routing boards, tactile sensors and user‑interface panels. They differ in contact rating, actuation style and mounting method – from miniature snap‑action levers suited to whisker‑type bump sensors, to slide or push‑button units that fit neatly on PCBs or breadboards. Relays add electrical isolation and higher current capability, allowing safe switching of motors or loads while preventing reverse flow. Compatibility with standard connectors and footprints, reliable contact performance and straightforward integration are the key factors that determine which device best matches a given automation or embedded project.

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Mini Pushbutton Switch: PCB-Mount, 2-Pin, SPST, 50mA (5-Pack)

Code: SKU-002571

These small, two-pin, normally open, momentary tactile buttons are intended for mounting to PCBs, but they can also be plugged into standard 0.1" breadboards. They work well as reset buttons and can be connected to microcontroller inputs to serve as a user-interface components.

$ 2.90

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Mini Slide Switch: 3-Pin, SPDT, 0.3A (3-Pack)

Code: SKU-002574

These small single-pole, double-throw (SPDT) slide switches are rated for 300 mA at 50 VDC and make great on/off power switches for low power electronics. They can also be used as a convenient way to choose between two analogue or digital input signals.

$ 3.20

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Mini Snap-Action Switch with 13.5mm Lever: 3-Pin, SPDT, 1A

Code: SKU-005210

This miniature single-pole, double-throw (SPDT) momentary switch can be used as a general-purpose micro switch or as a small tactile bump sensor for your robot. The switch body dimension is 12.8 × 6.0 × 6.5 mm, and the lever arm is 13.5 mm long.

$ 1.80

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Rocker Switch: 3-Pin, SPDT, 10A

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.

$ 2.75

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Snap-Action Switch with 16.3mm Roller Lever: 3-Pin, SPDT, 5A

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.

$ 3.65

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Snap-Action Switch with 16.7mm Lever: 3-Pin, SPDT, 5A

Code: SEN-10023

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 lever arm is 16.7 mm long.

$ 3.45

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Snap-Action Switch with 18.5mm Bump Lever: 3-Pin, SPDT, 5A

Code: SEN-10024

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 19.8 x 6.4 x 10.2 mm, and the 18.5 mm lever arm has a semicircular bump at the tip that simulates a roller.

$ 3.30

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Snap-Action Switch with 50mm Lever: 3-Pin, SPDT, 5A

Code: SEN-10022

This single-pole, double-throw (SPDT) momentary switch can be used as a general-purpose micro switch, but the long lever arm makes it especially useful as a tactile bump sensor for your robot (e.g whiskers or antennae).

$ 3.90

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FPF1320 Power Multiplexer Carrier with USB Micro-B Connector

Code: SKU-003304

This breakout board for Fairchild’s FPF1320 acts as a power multiplexer, allowing you to select which of two power sources is connected to a load while blocking reverse current into either of the sources.

$ 5.95

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TPS2113A Power Multiplexer Carrier with USB Micro-B Connector

Code: SKU-003306

This breakout board for Texas Instruments’s TPS2113A autoswitching power multiplexer allows you to select which of two power sources is connected to a load while blocking reverse current into either of the sources.

$ 12.95

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