33V

33V is a nominal electrical voltage designation used to describe a DC power level around 33 volts. The exact value and allowable tolerance depend on the specific power supply or battery system, but 33V serves as a practical reference point for designing and specifying equipment that operates from a low to mid-range DC rail.

Common contexts for 33V systems include telecommunications hardware, industrial automation equipment, LED lighting drivers, and other electronics that require more than 12 or 24 volts but less than higher high-voltage rails. In battery technology, 33V can be achieved by several configurations of series-connected cells, such as lithium-ion packs designed for portable devices or light electric vehicles; the pack voltage will vary with charge state and chemistry.

Electrical characteristics of a 33V rail typically emphasize stable voltage within a defined tolerance, adequate current delivery, and proper isolation and protection. Because 33V lies below many definitions of high voltage, it is often treated as low voltage in safety standards, yet it can still cause harm with sufficient current, poor insulation, or wet conditions. Devices operating at this level usually implement standard protection measures such as fusing, proper enclosure, and clear labeling.

There is no universal standard that fixes 33V as a formal category; it is a descriptive designation used by manufacturers to indicate a nominal operating voltage. See also low-voltage systems, DC power supplies, and Li-ion battery configurations.