Protection Circuits
Protection Circuits identifies safeguards included to respond to specified electrical or thermal fault conditions.
Examples include over-voltage, over-current and over-temperature protection. Each addresses a different condition, and its trigger threshold and response depend on the design. A general protection label does not establish that every possible fault is covered or that connected equipment cannot be damaged.
Protection Circuits — Power Supply
Check which safeguards are actually specified and whether a trip shuts the output down, limits current or requires a reset. Follow the instructions for recovery rather than repeatedly restarting a supply that enters protection. A recurring trip can indicate an incompatible load or another problem requiring investigation.
Protection does not make the wrong voltage, polarity or connector acceptable. It also does not replace ventilation or operating-temperature limits. Compare the named protections and their stated conditions, not simply the number of features listed.