RZW02.1-132-006 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RZW02.1-132-006 is part of the RZW Braking Resistors series and has a power rating of 132 kW. It features a resistance of 2.5 Ohms, a maximum surface temperature of 80 degrees Celsius, and operates with a thermal time constant of 100 seconds. The unit has IP20 protection class, weighs 45 kilograms, and measures 795 mm wide, 490 mm deep, and 460 mm high.
Internal Product Review
The RZW02.1-132-006 is a Bosch Rexroth Indramat RZW braking resistor rated for 132 kW with 2.5 Ω resistance. IP20 protection and an 80 °C maximum surface temperature support predictable cabinet integration and controlled thermal behavior. A 6% SD operating factor makes this unit a strong choice for dynamic braking applications.
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Product Description:
The RZW02.1-132-006 is a braking resistor module produced by Bosch Rexroth Indramat for the RZW Braking Resistors series. Connected to the DC link of an inverter, it converts surplus electrical energy into heat so that motors can decelerate quickly without causing overvoltage. The unit serves as a thermal dump element during dynamic stopping cycles in industrial automation systems. It is intended for applications in which regenerative energy cannot be returned to the power supply or retained in the DC link.
The resistor has a rated power capability of 132 kW, indicating the maximum average power that it can dissipate during the permitted duty cycle. Its nominal resistance of 2.5 Ω controls the braking current that flows when the drive activates the module. The maximum surface temperature is 80 °C, which must be considered when determining enclosure clearances and selecting nearby cable insulation. During cyclic operation, the resistor can remain active continuously for 7.2 s. It must then cool for 112.8 s to prevent thermal saturation during repeated regenerative events. Adequate airflow around the housing helps remove the heat produced during braking.
An operating factor of 6% SD indicates the allowable average duty over extended operating periods. The thermal time constant is 100 s, showing how quickly the internal temperature approaches thermal equilibrium after the resistor begins dissipating energy. The assembly weighs 45 kg, so its supporting panel or wall must accommodate the applied load. The IP20 protection class makes the module suitable for protected indoor installation, but the housing does not provide protection against water. The housing measures 795 mm in width, 490 mm in depth, and 460 mm in height, providing a low-profile arrangement for wall mounting. M10 threaded inserts are provided to secure the module to its mounting surface. The unit has design code 1 and belongs to line 2 within the product series. Its minimum resistance is 2.2 Ω, which supports verification of the resistor element before operation.
