Implementing a spst relay
You can easily get a "regular" electromechanical relay with sub 100 mA coil current and 10A contacts, but you can surely use the sub-100 mA current to turn on a transistor that can turn on the coil of a mechanical relay with 10A (or greater - greater is a good idea for longevity) contacts.

Then again, depending what you are doing, simply a transistor might do what you need.







simulate this circuit &ndash; Schematic created using CircuitLab