GSC International 4-91201 Circuit Switch, Single Pole, Single Throw. This Single Pole, Single Throw (SPST) Circuit Switch is a classic and effective electrical control device used to manually open or close a simple circuit.

Circuit switches are used to manipulate how electricity flows through a circuit. The base and the handle of the switch are insulated to allow for handling. Wires are connected to the screw-type binding posts. This circuit switch is a single pole, single throw switch.

Simple Circuit Control – Opens or closes one circuit path with a single throw mechanism; perfect for basic on/off control of low-voltage DC circuits.

Excellent for Education – Widely used in science classrooms to teach electricity and circuit logic through hands-on demonstrations.

Visual Functionality – Exposed metal components and lever arm make it easy for students to see how current is switched manually.

Ideal for DIY Projects – Great for hobbyists and tinkerers building custom circuits, battery setups, or small electronic models.

Low Voltage Applications – Recommended for low-current and low-voltage DC uses only (not suitable for household AC power).

⚠️ Proposition 65 Warning for California Residents:

WARNING: This product may expose you to chemicals including styrene and/or bisphenol A (BPA), which are known to the State of California to cause cancer, birth defects, or other reproductive harm.

For more information, visit www.P65Warnings.ca.gov.