RZW02.1-200-025 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RZW02.1-200-025 is a braking resistor from the RZW Braking Resistors series and has a power rating of 200 kW with a resistance of 1.8 ohms. It has dimensions of 995 mm width, 960 mm height, and 490 mm depth, and weighs 126 kilograms. The resistor is rated for 40 degrees Celsius maximum ambient temperature and an IP20 protection class.
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Product Description:
The RZW02.1-200-025 braking resistor is produced by Bosch Rexroth Indramat and is part of the RZW Braking Resistors series. It dissipates regenerative energy from connected drive controllers to maintain bus voltage within safe limits during rapid motor deceleration or emergency stops in automated machinery. This component is intended for cabinet mounting and supports high-power axes found in material-handling lines, packaging machines, and general motion applications.
The resistor is rated for a continuous braking power of 200 kW, a figure governed by its nominal resistance of 1.8 Ω. With an operating factor of 25% SD, the element may be energized for a maximum of 30 s followed by a recovery period of 90 s, making it suitable for cyclic stops rather than sustained duty. A lower connection value of 1.6 Ω is allowed when multiple units are paralleled, but the supply must respect the two-line layout and the 95 mm² conductor area assigned to each live line. A separate ground conductor of at least 10 mm² is required for safety. Heat accumulation is moderated by a 100 s thermal time constant, so drive planners can calculate temperature rise over repeated braking events. The assembly is labeled as design 1 in the RZW line, indicating mechanical compatibility across this size class.
The cabinet footprint is defined by a width of 995 mm, a height of 960 mm, and a depth of 490 mm, while the housing mass reaches 126 kg. Surface temperature is limited to 80 °C, and safe ambient operation is specified up to 40 °C with relative humidity not exceeding 90 %. The unit carries the enclosure rating IP20, so it must be mounted inside a panel where accidental contact with live parts is prevented. These mechanical and environmental limits complement the duty-cycle and thermal characteristics discussed earlier, allowing the resistor to perform predictable energy dissipation within automated production cells.
