A surge protector is made to handle a very short duration of high current and open the circuit due to the current. If the current is not as high as the protector is set for, it will not open and your equipment may still be damaged. They are good for most problems but not for everything that can happen. They can also be damaged by the same current that they are protecting you from. Protector go bad over time also so they should be tested and replaced when needed. The price to replace is much less then what would have happened if it was not in place. Since they can go bad over time or damaged due to a high current. You might want to rethink puchase against renting. Just my thoughts on something I know about.
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