RZW03.1-110-040

The Bosch Rexroth Indramat RZW03.1-110-040 braking resistor from the RZW Braking Resistors series sets a new standard in industrial deceleration control. This unit combines a Power Class of 110 with a Peak Power capacity of 100 kW, ensuring high-energy absorption during rapid braking cycles. Engineered for robust protection, the resistor carries an IP23 Protection Class rating, safeguarding internal components against solid objects larger than 12 mm and water spray. It operates at an Operating Factor (sd) of 40%, which provides a maximum on-time of 48 seconds per 2-minute cycle to balance thermal load and performance. The housing is constructed from galvanized steel plate, delivering both structural integrity and corrosion resistance under demanding conditions. Complementing these features is a Thermal Time Constant of 150 s, indicating its capacity to store and dissipate heat uniformly over extended operational periods.

Performance is optimized through precisely defined electrical characteristics. At 40% SD, the unit presents a Resistance of 2.7 Ω using a Resistor Type F10 element, while at 60% SD a dual F9 configuration yields 5.4 Ω. The Minimum Connectable Resistance Value of 2.5 Ω ensures safe interfacing with variable frequency drives and braking choppers. Internal current flow is regulated by a Cross-sectional Area of 70 mm² conductor, reducing localized heating and extending service intervals. Heat is actively managed by a 3.5 kVA Ventilator powered from a 3-phase 400 V AC supply, which forces airflow through the resistor bank to maintain optimal junction temperatures. This design affords rapid thermal recovery and consistent braking torque even under stop-and-go duty cycles.

Built for long-term reliability, the RZW03.1-110-040 features a rugged enclosure that resists mechanical stress and environmental ingress. Its IP23 classification and galvanized steel housing material deliver dependable protection against dust and intermittent water spray in industrial automation settings. The model’s weight varies with specific configurations, allowing flexible integration into control cabinets or standalone mounting frames. Compatibility with standard motor drive systems and braking choppers simplifies commissioning and reduces installation time. The resistor’s proven performance makes it ideal for motion control applications, conveyor braking, hoisting systems, and any high-inertia load where precise deceleration and energy dissipation are critical.