RZW03.1-160-015 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RZW03.1-160-015 is a braking resistor from the RZW Braking Resistors series with a power rating of 160 kW and a brake resistance of 2.7 Ohms. This unit has a protection class of IP23, measures 995 mm in width, 770 mm in height, and weighs 101 kilograms. It supports a load cycle of 120 seconds and features a power cable cross-section of 70 mm².
Internal Product Review
The RZW03.1-160-015 is a Bosch Rexroth Indramat RZW braking resistor with 160 kW power data and 2.7 Ω brake resistance. IP23 protection and a 15% operating factor support dependable duty handling in demanding braking applications. A 120 s load cycle makes the resistor a strong choice for controlled energy dissipation.
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Product Description:
The RZW03.1-160-015 braking resistor is manufactured by Bosch Rexroth Indramat as part of the RZW Braking Resistors series. In drive systems that decelerate large inertial loads, the braking resistor dissipates surplus DC bus energy as heat so the inverter can avoid overvoltage trips and stop the motor quickly. The unit is designed for cabinet or machine-frame mounting and pairs with Rexroth inverters that require an external resistor within the specified resistance range.
The fixed resistance value is 2.7 Ω, allowing a compatible drive to limit current while still achieving the required braking torque. Under a nominal power load of 160 kW, the resistor can be energized for a maximum of 18 seconds within a 120-second load cycle. These operating periods correspond to an application duty cycle of 15% SD, which protects the resistor windings from thermal overload. The enclosure carries an IP23 rating, providing protection against particles larger than 12.5 mm and water spray at angles of up to 60 degrees from vertical during indoor installation. When active, the resistor releases heat through convection across a surface that measures 770 mm high and 490 mm deep. Its terminal block accepts M10 cable lugs for the power connection.
The resistor has a thermal time constant of 100 seconds, meaning its temperature rises or falls by approximately 63% of a step change during that period. If multiple drives share the component, the minimum connectable resistance per axis must remain above 2.2 Ω to prevent excessive current. Installation planning must account for the unit weight of 101 kg and the lifting points provided on the frame. Power conductors with cross-sectional areas of up to 70 mm² can be connected without additional adapters. The unit has a width of 995 mm, which establishes the lateral clearance required at the installation location. Adequate open space around the convection surfaces is necessary to prevent accumulated heat from affecting nearby electrical components.
