Power-limited Class 1 circuits are restricted to a maximum voltage of how many volts?

Power-limited Class 1 circuits are defined by the National Electrical Code (NEC) and can operate at a maximum voltage of 30 volts. This voltage limit is crucial because it ensures that the circuits remain safe for low-energy applications, preventing hazards such as electric shock while allowing for sufficient power delivery for devices that need it.

In applications where limited energy is essential, such as in low-voltage control systems or alarms, maintaining this threshold is necessary to adhere to safety standards and protect both users and equipment. Class 1 circuits can handle some power delivery, but they are specifically designed to mitigate risk, making the 30-volt limit a critical aspect of their design and implementation.