Pushmatic electrical panels are different than others because their circuit breakers are push button style as opposed to the more switch style that we see in most electrical panels. The Pushmatic panels were generally comprised of heavy duty components, but the problem over time was that the circuit breakers themselves could age in a way that made them defective. Since the push button circuit breaker relied on greased components to ensure proper function, regular maintenance such as pushing the button on and off several times was required to keep the buttons in serviceable condition. Lack of maintenance would cause the internal parts to bind, which rendered them inoperable. In addition, the breakers had labels that would change from “on” to “off” when the breaker was pushed, and in some cases the label would say “off” but the breaker was still engaged. Other problems with the circuit breakers included failure to trip when they were supposed to, and arching of the contacts within the breaker which caused them to weld together. All these concerns are considered to be potential shock and fire hazards.
If you are considering buying a house with a Pushmatic electrical panel, you should have a licensed electrical contractor further evaluate the panel and determine whether the panel should be replaced, or if repairs are needed. They can also run tests on the electrical system, and make load calculations that can determine if the existing panel is properly sized and in safe operable condition. New Pushmatic circuit breakers can be purchased, but determination of whether the breakers are compatible should be done by a licensed electrical contractor.
Check out the video below for more information about Pushmatic electrical panels.