I don't know of any purely electrical brake systems in production, though I saw prototypes about 10 years ago. It would be difficult to implement cost effectively as motoring regulations mean you need at least one redundant hydraulic braking circuit, so you would still need a complete hydraulic system as backup.
There are some electrohydraulic systems in use, where there is a sensor on the brake pedal which transmits the braking effort electrically to a pump on a hydraulic braking circuit. The Mercedes W211 E-Class initially had such an electrohydraulic brake system (called SBC) which was a disaster and Mercedes ended up retrofitting all pre facelift W211s with conventional brakes. Some hybrids use a more successful electrohydraulic setup, such as the Toyota Prius.
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