RZW03.1-005-015 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RZW03.1-005-015 is a braking resistor from the RZW Braking Resistors series and weighs 7 kilograms. It has a resistance of 47 ohms, a peak power of 5 kilowatts, and a protection class of IP23. The unit measures 335 mm in height, 230 mm in width, and 182 mm in depth.
Internal Product Review
The RZW03.1-005-015 is a Bosch Rexroth Indramat braking resistor that stands out with 5 kW peak power and 47 Ω resistance. IP23 protection and an 80 °C maximum surface temperature support dependable use in industrial braking circuits. The 15% operating factor makes the resistor a practical choice for intermittent energy dissipation.
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Product Description:
The RZW03.1-005-015 braking resistor is manufactured by Bosch Rexroth Indramat for the RZW Braking Resistors series. As a braking component, it connects to drive controllers to absorb surplus kinetic energy from decelerating servo axes and convert it into heat, preventing DC-bus overvoltage in automated machinery. The compact assembly corresponds to design 1 and fits inside control cabinets or on machine frames where thermal dissipation and protected wiring are required.
It has a nominal resistance of 47 Ω, which limits braking current while remaining above the minimum connectable resistance of 30 Ω for the associated drives. During rapid stopping, the resistor can absorb a peak power of 5 kW, while its continuous power reference is 5.5 kW when averaged over the specified duty cycle. The allowable energization window consists of a maximum on-time of 18 s, followed by a recovery interval of up to 102 s. These periods provide a duty ratio that keeps the resistor element within its thermal limits. External wiring connects to terminals that accommodate conductors with a cross-sectional area of 2.5 mm². The enclosure has an IP23 protection rating, providing protection against contact with internal components, solid objects larger than 12.5 mm, and water spray at angles up to 60 degrees from vertical.
The resistor has an operating factor of 15% SD, and its complete load cycle lasts 120 s, supporting intermittent deceleration in indexing equipment. A thermal time constant of 150 s indicates how quickly the housing responds to heat generated during successive braking events. The surface temperature is limited to 80 °C, helping prevent adjacent wiring from exceeding its insulation temperature. The unit weighs 7 kg and measures 230 mm wide, 182 mm deep, and 335 mm high, allowing its required cabinet space to be determined. It can operate at an ambient relative humidity of up to 90% when condensation is prevented.
