The MPL-B520K-SK74AA is a low inertia servo motor from the Kinetix series, featuring a 400V power rating with 165mm frame size and 50.8mm magnet stack length. It operates at 4000 RPM with a 1024 sin/cos absolute single-turn encoder (Hiperface protocol). The motor includes a 24V DC holding brake and circular (Speedtec) DIN connector, without shaft key or seal. Factory warranty does not apply, but it comes with Beyondtech's warranty.