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A system includes a plurality of module locations at which uninterruptible power supply (UPS) modules are installable and a control circuit configured to selectively support standby UPS and on-line UPS operation of modules installed at the plurality of module locations. The system may include a plur

A system includes a plurality of module locations at which uninterruptible power supply (UPS) modules are installable and a control circuit configured to selectively support standby UPS and on-line UPS operation of modules installed at the plurality of module locations. The system may include a plurality of UPS modules installed in the plurality of module locations and including at least one UPS module configured to operate as a standby UPS. The plurality of UPS modules may further include at least one UPS module configured to operate as an on-line UPS. The UPS modules may share a common architecture including a submodule location at which a submodule is installable and circuitry configured to support operation of submodules with different functions in the submodule location.

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1. A system comprising: a plurality of module locations, each configured to interchangeably accept on-line uninterruptible power supply (UPS) modules and standby UPS modules; anda control circuit configured to selectively support standby UPS and on-line UPS operation of UPS modules installed at the

1. A system comprising: a plurality of module locations, each configured to interchangeably accept on-line uninterruptible power supply (UPS) modules and standby UPS modules; anda control circuit configured to selectively support standby UPS and on-line UPS operation of UPS modules installed at the plurality of module locations. 2. The system of claim 1, further comprising a plurality of UPS modules installed in the plurality of module locations and including at least one UPS module configured to operate as a standby UPS. 3. The system of claim 2, wherein the plurality of UPS modules further includes at least one UPS module configured to operate as an on-line UPS. 4. The system of claim 2, wherein the plurality of UPS modules share a common architecture including a submodule location at which a submodule is installable and circuitry configured to support operation of a submodule in the submodule location as a rectifier for on-line UPS operation or as a bypass switch for standby UPS operation. 5. The system of claim 4, wherein the UPS modules each comprise an inductor assembly coupled to the submodule location and configured to operate as an energy storage device when a submodule installed in the submodule location is operated as a rectifier and to operate as a current limiter when a submodule installed in the submodule location is operated as a bypass switch. 6. The system of claim 4, wherein the submodule location is configured to have submodules installed therein providing respective different functions. 7. The system of claim 4, wherein the submodule location is configured to have multifunctional submodules installed therein. 8. A UPS system comprising: a plurality of UPS module locations; andat least one UPS module installed at a corresponding at least one of the plurality of UPS module locations, the at least one UPS module comprising an inverter submodule and a switch submodule configured to selectively bypass the inverter submodule, wherein at least one of the submodules is installed in a submodule location configured to interchangeably support various types of submodules that provide different functions. 9. The UPS system of claim 8, wherein the at least one UPS module is configured to support a standby mode of UPS operation wherein power is provided to a load coupled to the at least one UPS module from an external AC source via the switch submodule in a first state and power is provided to the load from a battery via the inverter submodule in a second state. 10. The UPS system of claim 8, wherein the switch submodule is installed in a submodule location configured to interchangeably support various types of submodules that provide at least one different function than the switch submodule. 11. The UPS system of claim 10, wherein the various submodules comprise a rectifier submodule. 12. The UPS system of claim 10, further comprising a control circuit configured to control submodules in the submodule location to support different functions. 13. The UPS system of claim 10, wherein the at least one UPS module comprises a first UPS module installed at a first one of the UPS module locations and comprising the inverter submodule and the switch submodule and further comprising a second UPS module installed at a second one of the UPS module locations and comprising an inverter submodule and a rectifier submodule, wherein the switch submodule and the rectifier submodule are installed in a common submodule location in the respective first and second UPS modules. 14. The UPS system of claim 8, wherein the at least one UPS module comprises: a first UPS module at a first one of the UPS module locations and configured be coupled to a first AC source; anda second UPS module at a second one of the UPS module locations and configured to be coupled to a second AC source. 15. The UPS system of claim 14, wherein the first and second UPS modules are configured to be coupled to respective first and second loads. 16. The UPS system of claim 8, wherein the at least one UPS module comprises an inductor assembly coupled to the switch submodule and configured to operate as a current limiter. 17. A system comprising: a plurality of UPS module locations; andfirst and second UPS modules installed at respective first and second UPS module locations of the plurality of UPS module locations and having respective first and second power outputs configured to be coupled to respective first and second power supply inputs of a data center equipment rack, wherein at least one of the first and second UPS modules comprises an inverter submodule and a switch submodule configured to selectively bypass the inverter module and wherein at least one of the submodules is installed in a submodule location configured to interchangeably support various types of submodules that provide different functions. 18. The system of claim 17, wherein both of the first and second UPS modules are configured to provide a standby mode of UPS operation and wherein the first and second UPS modules are configured to receive power from respective first and second AC sources. 19. The system of claim 18, further comprising at least one computer equipment rack having first and second power inputs connected to respective ones of the first and second power outputs of the first and second UPS modules. 20. The system of claim 17, wherein the first UPS module is configured to support a standby mode of operation and wherein the second UPS module is configured to support an on-line mode of UPS operation. 21. The system of claim 20, further comprising at least one first computer equipment rack coupled to the first UPS module and at least one second computer rack coupled to the second UPS module.