RZW02.1-030-006 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RZW02.1-030-006 is part of the RZW Braking Resistors series and has a resistance of 10 Ohms with a power rating of 30 kW. It features an IP20 protection class, a conductor cross-section of 6 mm², and supports a connection thread size of M10. The resistor weighs 9.5 kilograms and has physical dimensions of 490 mm width, 300 mm depth, and 270 mm height.
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Product Description:
The RZW02.1-030-006 is a braking resistor module manufactured by Bosch Rexroth Indramat and supplied within the RZW Braking Resistors series. Designed for connection to Rexroth drive controllers, the unit dissipates regenerative energy produced during rapid motor deceleration, protecting the DC bus from overvoltage. It performs this task by converting surplus electrical power into heat that is released through its finned housing. When installed in a control cabinet, the resistor allows motion axes to brake quickly without damaging power electronics in industrial automation systems.
The module measures 490 mm wide, 300 mm deep, and 270 mm high, and it weighs 9.5 kg, allowing panel mounting without heavy reinforcement. Power terminals accept copper conductors with a cross-sectional area of 6 mm², and the grounding stud has an M10 thread for secure bonding. The internal resistor elements have a cold resistance of 10 Ω. When combined with the drive’s DC-link voltage, this resistance determines the braking current and instantaneous thermal load. During steady cycling, the housing can dissipate 30 kW, while the enclosure provides an IP20 protection rating against accidental finger contact.
Dynamic duty limits are governed by a 6% operating factor, meaning the resistor may be energized for up to 7.2 s and then requires a recovery period of 112.8 s. These intervals coordinate with the 100 s thermal time constant of the ceramic stacks, keeping the temperature within design limits during repetitive stops. The permitted minimum external resistance is 8.75 Ω, which helps prevent overcurrent when multiple units are connected in parallel. The Line 2 and Design 1 identifiers align this model with compatible RZW wiring kits and mounting rails used in standard cabinet layouts.
