Engineered for residential and commercial applications, the 150A QN2150R provides reliable thermal-magnetic protection for 120/240V systems. It mounts into Siemens load centers and meter combinations, requiring four total panel spaces for installation. The unit serves as an exact replacement for the legacy MPD2150R. Featuring a factory-installed reverse handle, this two-pole plug-on breaker delivers a 10kAIC rating. It accepts 4 AWG to 300 kcmil wire via standard lug terminals.
How many panel spaces are needed to install the QN2150R?
Although it is a two-pole breaker, the QN frame design requires four total panel spaces for proper installation in compatible Siemens load centers and meter combinations.
What does the R suffix indicate on this Siemens breaker?
The R signifies a factory-installed reverse handle. This configuration is typically required when the unit is installed as a main breaker in specific panel orientations to ensure proper handle operation.
Is the QN2150R a suitable replacement for legacy MPD series breakers?
Yes, this Siemens breaker serves as an exact replacement for the legacy MPD2150R circuit breaker.
Can this breaker be used as a main breaker?
Yes, the QN2150R is frequently installed as a main breaker in residential electrical distribution systems and meter combinations that accept QNR type breakers.
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