Rent Secondary Injection Test Sets from Protec Today

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Circuit breakers are commonly found in homes, industrial facilities and power substations. Used to protect the power line from reversal, overload, earth fault, and over current conditions, this protective device is preferred over fuses. These power interrupters can be reset and reused for future use which makes it cheaper because they do not need to be replaced every time the device trips.

In order to check the effectiveness of a breaker, a primary injection test or a secondary injection test is conducted. Used circuit breakers are best tested using a 
secondary injection test set. This is because primary injection tests a protective device while it is connected to the power line. When the breaker trips, the coils can induce an inductive kickback which can be several thousands of volts. This can effectively shorten the operating life of the protective device. Primary injection is suitable for new circuit breaker installations to test its effectiveness. Secondary injection is safer on used protective devices because it does the test with no power in its contacts.

Here are just a few Secondary Injection Test Sets available for rent from Protec:




Eaton Cutler Hammer 140D481G03 Secondary






Siemens PTS-5







Square D by Schneider S33595



With offices in Texas, Illinois, New Jersey and Nevada, Protec offers a full stock of electrical test and measurement equipment, with rental options that work for you.

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