This small single-pole, double-throw (SPDT) slide switch is rated for 100 mA at 120 VDC and makes great on/off power switches for low power electronics.
They can also be used as a convenient method to choose between two analog or digital input signals.
The three pins switch has a 5mm high toggle and 0.1″ lead spacing compatible with standard solderless breadboards.
These switches are sold in packs of 5.