6SE3290-0DA87-2RA0 SIEMENS

The 6SE3290-0DA87-2RA0 is a braking resistor designed for use with Siemens Micromaster Vector (MMV) series inverters, specifically models MMV37/3 through MMV150/3. This resistor is crucial for dissipating excess energy generated during braking or deceleration of a motor, preventing overvoltage faults in the inverter. It is rated for a maximum DC voltage of 900V, ensuring compatibility with a wide range of industrial applications. The resistor has a continuous power rating of 80W, indicating its ability to handle sustained braking loads. Additionally, it can withstand a peak power of 1600W for up to 12 seconds, accommodating short bursts of intense braking. This corresponds to a 5% duty cycle, reflecting the proportion of time the resistor can operate at its peak power. The resistance value is 400 Ohms, carefully chosen to provide optimal braking performance while protecting the inverter. Proper selection and installation of the braking resistor are essential for reliable and efficient motor control. This component facilitates controlled deceleration, reduces wear on mechanical brakes, and enhances the overall performance and safety of the drive system. Its robust design ensures durability and long-term reliability in demanding industrial environments.