RZW02.1-005-040

The Bosch Rexroth Indramat RZW02.1-005-040 braking resistor is a robust component in the RZW Braking Resistors series, delivering a peak power rating of 5 kW and offering a resistance of 47 Ohms at a 40% operating factor. Manufactured to IP20 protection standards, this resistor ensures safe, indoor operation in demanding industrial environments. Its primary function is to dissipate regenerative energy from drive systems, converting excess electrical energy into heat for reliable braking performance and controlled energy management.

Engineered with precision, the RZW02.1-005-040 features a built-in 3.5 kVA axial ventilator (3 AC / 400 V / 50 Hz) to facilitate external ventilation and maintain optimal operating temperatures. The unit supports a minimum connectable resistance of 30 Ohms and an operating factor of 40% SD, with a corresponding power class of 005 (5.5 kW). The primary housing material is galvanized steel, offering structural integrity and corrosion resistance. The resistor displays a thermal time constant of 150 seconds for Type E and 100 seconds for Type F resistors, ensuring rapid heat dissipation and consistent thermal performance under varying load conditions. With cross-sections of 2.5 mm² for both 40% and 60% SD, the design accommodates efficient current flow and minimizes voltage drop.

The cylindrical, wire-wound design is cement-coated and housed within a perforated metal cover to promote airflow and heat release. Bolted lateral mounting brackets facilitate secure installation parallel to the main assembly surface, while porcelain terminal blocks and PG cable glands ensure reliable electrical connections and strain relief. Rated at IP20, the RZW02.1-005-040 is protected against solid objects larger than 12 mm, guaranteeing durability in standard automation cabinets. Its compact footprint—586 mm width, 275 mm depth, 120 mm height—and weight of 7.5 kg simplify integration into existing control systems. Optimized for frequent on/off cycles without performance degradation, this resistor enhances system safety, improves braking response, and elevates overall efficiency in industrial automation applications.