RZW02.1-090-040
RZW Braking Resistors
The RZW02.1-090-040, manufactured by Bosch Rexroth Indramat, is a high-performance unit in the RZW Braking Resistors series. It delivers a continuous 90 kW of energy dissipation for demanding industrial braking tasks. The device’s fixed resistor core is encased in a protective steel screen (Type F), offering robust mechanical and thermal endurance. Designed to integrate seamlessly into high-inertia motion systems, it ensures rapid deceleration with controlled energy conversion.
Engineered for precision cooling and duty-cycle management, this braking resistor features a 100 s Thermal Time Constant and an Operating Factor (sd) of 40% to balance active braking and recovery intervals. It exhibits a Peak Power-to-continuous Power Ratio of 2.2, allowing for short-duration overloads without derating. The unit requires a minimum conductor size of 10 mm² and supports a 47 Ω Minimum Connectable Resistance. With an External Ventilation Requirement of a 3 AC/400 V/50 Hz axial fan rated 3.5 kVA, it maintains core temperature below 80 °C surface heating during operation. Housed in an IP20 enclosure and rated for ambient environments up to 40 °C, it conforms to Design Code 2.1 and delivers reliable performance across industrial settings.
Installation is straightforward, and the resistor’s modular footprint facilitates integration with Bosch Rexroth motion controllers and drive platforms. Its steel-screen construction and stringent thermal design minimize insulation stress and mechanical fatigue, translating into long service intervals and low maintenance requirements. Ideal for packaging machines, presses, and conveyor systems, the RZW02.1-090-040 enhances system reliability and optimizes cycle times in automated production lines.
Technical Specifications
Braking Resistor Type
Fixed Resistor with Steel Screen (Type F)
Cross-section Requirement
At least 10 mm²
Design Code
2.1
External Ventilation Requirement
3 AC / 400 V / 50 Hz axial ventilator, 3.5 kVA
Maximum Ambient Temperature
40 °C
Minimum Connectable Resistance
47 Ω
Operating Factor (sd)
40%
Peak Power-to-continuous Power Ratio
2.2
Product Line
RZW
Protection Class
IP 20
Rated Power
90 kW
Surface Heating During Operation
Up to 80 °C
Switch-off Duration
72 s
Switch-on Duration
48 s
Thermal Time Constant
100 s
Shipping & Payment Options
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