RZW03.1-132-040 Bosch Rexroth Indramat
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MPN: R911203497
The Bosch Rexroth Indramat RZW03.1-132-040 is part of the RZW Braking Resistors series and is designed with a rated power of 132 kW and a resistance of 2.3 Ohms. This resistor has dimensions of 1100 mm in height, 995 mm in width, and 490 mm in depth, and weighs 138 kg. Its protection class is IP23 and it supports a line cross-section of 95 mm².
Internal Product Review
The RZW03.1-132-040 is a Bosch Rexroth Indramat RZW braking resistor with 132 kW power data and 2.3 Ω resistance. IP23 protection and a 40% SD operating factor make the unit a strong fit for controlled braking in demanding drive systems. A 100 s thermal time constant further supports stable thermal behavior.
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Product Description:
The RZW03.1-132-040 is a braking resistor module produced by Bosch Rexroth Indramat for the RZW Braking Resistors series. Installed on the DC link of a servo or inverter system, it converts surplus kinetic energy into heat during deceleration. This process prevents regenerative energy from raising the bus voltage beyond safe operating limits. The module follows mechanical design 1 and is packaged for installation inside electrical machinery or in a nearby cabinet space.
The resistor network has a continuous power absorption rating of 132 kW, indicating how much regenerative power it can dissipate at the specified operating factor. Its nominal resistance is 2.3 Ω, which determines the electrical load presented to the drive during braking. Incoming conductors connect to terminals that accommodate a conductor cross section of 95 mm², providing sufficient current-carrying capacity for peak energy events. The housing measures 490 mm deep and 995 mm wide, so the installation area must provide adequate floor space and ventilation clearance. The assembly has a mass of 138 kg, requiring mounting surfaces that can support its weight. Suitable lifting equipment is necessary when positioning the module because of its size and mass.
The enclosure stands 1100 mm tall and requires sufficient overhead clearance for installation and airflow. The minimum connectable resistance is 2.2 Ω, which must be observed when arranging the braking circuit. The module has an operating factor of 40% SD, allowing conduction for up to 48 seconds followed by an off period of 72 seconds. A thermal time constant of 100 seconds indicates the rate at which the internal temperature responds to changes in dissipated power. The enclosure has a protection class of IP23, providing protection against contact with internal components, solid objects larger than the permitted size, and water spray within the applicable angle. The module is intended for dry indoor locations where unrestricted airflow can remove the heat produced during braking cycles.
