Блоки питания должны обладать встроенной защитой от короткого замыкания и перегрузки по току, и на их выходе устанавливать дополнительные устройства защиты не требуется.
Power supplies must have built-in protection against short-circuit and over-current, and on their way out to install additional safety devices are required.
power units must have built-in protection against short circuit and overload current, and the output device is not required to install additional protection.