RZW02.1-200-015 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RZW02.1-200-015 is a braking resistor with a power rating of 200 kW and a resistance of 1.8 Ohms. Part of the RZW Braking Resistors series, it features an IP20 protection class and weighs 102 kg. The unit has dimensions of 960 mm in height, 795 mm in width, and 490 mm in depth.
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Product Description:
The RZW02.1-200-015 braking resistor is produced by Bosch Rexroth Indramat for the RZW Braking Resistors series. In a drive system, it absorbs surplus regenerative energy and converts it into heat so the connected inverter can decelerate large servo or induction motors without triggering overvoltage faults. By adding this component to the DC bus, machine builders can maintain controlled stopping profiles and protect sensitive power electronics during emergency braking or rapid cycle changes.
This model is rated for 200 kW of peak dissipation, indicating how much power can be converted into heat during a braking event. The resistor may remain energized for up to 18 s; once that interval ends, the unit must cool for 102 s to remain within its thermal limits. Those limits correspond to an operating factor of 15% SD, meaning the device can be active for only 15 percent of each duty cycle. Its fixed resistance value is 1.8 Ω, while the drive controller may connect additional elements in parallel, provided the total resistance does not fall below the 1.6 Ω minimum. The resistance and DC-link voltage determine the maximum braking current that the resistor will carry. These values support the proper selection of cabling and protective fuses for the electrical connection.
The thermal behavior is characterized by a time constant of 100 s, indicating how quickly the housing temperature responds to load changes. An IP20 protection class permits cabinet installation where protection against finger contact is required and exposure to airborne dust is minimal. Power lugs accept a conductor cross-section of 95 mm² and clamp beneath M10 terminals, simplifying the connection of low-impedance bus links. The assembly weighs 102 kg and measures 960 mm high, 795 mm wide, and 490 mm deep. Panel builders must reserve adequate floor space and provide sufficient structural support before mounting the unit. The product is a Design 1, Line 2 module.
