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Knife Switch for Physics Labs | Single Pole Double Throw (SPDT) Circuit Switch
This single pole double throw (SPDT) knife switch is a dependable component for hands-on electricity experiments and classroom circuit demonstrations. The open mechanical design allows students to clearly see how electrical connections are made and redirected, making it an effective teaching tool for exploring circuit control and switching paths. It is commonly used in physics and electronics lessons focused on basic electrical circuits and current flow.
Knife Switch Features:
• Single pole double throw (SPDT) configuration
• Visible mechanical switching action
• Durable base for stable mounting
• Metal contact terminals for reliable conductivity
• Ideal for classroom circuit experiments and demonstrations
An SPDT knife switch allows a single electrical input to be connected to one of two output paths, making it useful for experiments that compare circuits, reverse current paths, or control which component receives power. The clear, hands-on design helps students easily understand how switches influence electrical circuits.
Did You Know? Knife switches were among the earliest electrical switches used in laboratories because their open design makes it easy to see exactly when a circuit is connected or disconnected.