Like the Siemens Q-series, Square D home panels are designed for snap-in circuit breakers. In many cases, a Square D type "QO" panel can accommodate Siemens Q-series circuit breakers, but this is not always the case.
What does QP mean on a breaker?
Some research says that a QP circuit breaker is the 1" or 2" wide breakers that protect a 110V or 220V circuit respectively, and is made by Siemens. Square D is another manufacturer of circuit breakers and service panels.
Are QP and MP breakers interchangeable?
Siemens type QP breakers are interchangeable with Murray type MP-T breakers which are in turn interchangeable with Crouse-Hinds type MP breakers.
Are Siemens and Eaton circuit breakers interchangeable?
Eaton's UL classified breakers are designed and tested to be both mechanically and electrically interchangeable with circuit breakers manufactured by General Electric, Thomas & Betts, ITE/Siemens, Murray, Crouse-Hinds, and Square D.
What breakers are compatible with Siemens QP breakers?
A Siemens QP breaker compatibility chart or manual may say that their circuit breakers fit into other load centers made by other brands. General Switch, Westinghouse, Murray, Challenger, Arrow Hart, and General Electric serve as good examples of such brands.Sep 29, 2021
Are MP and QP breakers interchangeable?
Since all breakers are not interchangeable with QP breakers, using another brand can result in an electrical fire or issues with circuits. Even if a breaker appears to fit in your panel, the connection might not be as secure as a breaker of the correct brand.
What panels are Siemens breakers compatible with?
General Switch, Westinghouse, Murray, Challenger, Arrow Hart, and General Electric serve as good examples of such brands. However, that doesn't always mean that the breakers they produce are also compatible with Siemens panelboards.Sep 29, 2021