What is the voltage level of a Class 1 solid-state device that may cause potential damage?

• A. Less than 1,000 V
• B. 1,000 to 5,000 V
• C. 5,000 to 10,000 V
• D. 10,000 V or more

Answer: (A)

Class 1 devices are considered low-voltage equipment. The voltage limit for Class 1 is set to below 1,000 volts. This boundary distinguishes it from higher classes, where insulation, safety procedures, and ratings must handle much greater voltages. Although even low voltages can damage sensitive circuitry if not properly rated or protected, voltages under 1,000 V are what define Class 1 in this context. That’s why the best choice is the option describing voltages less than 1,000 V.