MNEPV breakers are the same as CBI QY breakers except the standard used is inadequate for the solar industry. MidNite breakers have been evaluated by ETL to 150VDC and are listed for US and Canada. All of the NRTL listings still apply. Breakers ordered under the CBI part numbering system will not be listed for 150VDC and in many cases are not suitable for the solar industry. 150VDC ETL listed in the US and Canada.

DIN-mount breakers fit MidNite Solar and Magnum Energy enclosures, and MidNite Solar and OutBack Power PV array combiners. These breakers are polarized, so the positive wire from the power source needs to be connected to the "+" side of the breaker. The maximum PV array voltage must not exceed the voltage rating of the breakers used. The 600 VDC breakers also have a remote-trip actuator, useful for rapid shutdown