M90 can be configured with fully redundant power and battery modules. Should one fail, the remaining modules smoothly take over the load. Power modules can be hot swapped without risk to the critical load. The new 15kVA power modules allow the M90 to be scaled from 15kVA to 45kVA. M90 systems configured with the 20kVA power module are scalable from 20kVA to 60kVA. As power requirements change, M90 modularity makes it easy to add modules and increase capacity.