I am working on a design involving a 125 VDC (nominal) circuit, and am looking to specify a 2-pole MCCB. Although the nominal rating of my DC system is 125 VDC (62.5 VDC on negative and 62.5 VDC on positive), and is ungrounded, the system floats at 134-136 VDC. The ratings on MCCB for DC tend...