RZW02.1-018-015

The Bosch Rexroth Indramat RZW02.1-018-015 is a robust braking resistor in the RZW Braking Resistors series, engineered for precise energy dissipation in industrial automation and drive systems. This compact unit delivers a nominal resistance of 18.0 Ω combined with a rated power of 4.0 kW (100% SD) to efficiently manage regenerative braking loads. With a construction conforming to IP20 protection class, the resistor is optimized for indoor control panels where dust and solid ingress must be limited. Manufactured by Bosch Rexroth Indramat, the RZW02.1-018-015 integrates seamlessly into drive circuits of motors up to 4.0 kW, providing reliable peak power absorption and heat dissipation. Its solid-state design ensures long-term durability in continuous and intermittent braking operations.

The RZW02.1-018-015 resistor features a power rating of 4/16.5 kW selectable by duty cycle, supporting boosted peak absorption at a ratio of peak power to continuous power of 4:1 when operated at 15% switching duty. Its specified operating factor of 15% SD for continuous operation ensures that thermal limits are respected, while accommodating higher transient demands. The unit’s thermal time constant of 100.0 s facilitates gradual heat emission, enabling stable temperature profiles during cyclic braking. It operates within a temperature range of 0°C to 40°C and can be stored at -25°C to +70°C, making it versatile for varied industrial environments. Grounding and connection integrity are guaranteed by adhering to a minimum conductor cross-section of 10 mm² Cu, as outlined in the connection guidelines.

Operational performance is maintained under rigorous conditions, with a maximum housing temperature of 80°C and a rated ambient humidity up to 90% (non-condensing). The resistor accepts multiple switching duty percentages of 6%, 15%, 25%, 40%, and 60%, offering configurability for diverse braking profiles and cycle frequencies. During repeated regenerative events, the device sustains its nominal power handling without significant derating, assuring consistent energy management. Its compact form factor and efficient heat sink configuration reduce system footprint while preserving thermal stability. The inclusion of standardized mounting points and clear connection labeling simplifies installation and maintenance processes.

System integration is streamlined for conventional drive controllers and PLC-based automation architectures, enabling direct installation into resistor banks or modular control racks. The RZW02.1 series design ensures compatibility with common industrial communication protocols when paired with compatible drive amplifiers, although the resistor itself remains a passive component. Typical applications include conveyor braking, hoist and crane energy management, and variable-speed motor deceleration modules in manufacturing and material handling systems. For engineers seeking a dependable RZW02.1-018-015 module, Bosch Rexroth Indramat provides detailed datasheets and configuration support to optimize braking resistor selection and drive tuning in complex automation solutions.