RZW03.1-110-006 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RZW03.1-110-006 is part of the RZW Braking Resistors series and offers a power rating of 110 kW with a resistance of 3.1 Ohms. The resistor has an ingress protection rating of IP23, weighs 51 kilograms, and measures 795 mm wide by 520 mm high by 490 mm deep. It features a conductor cross-section of 50 mm² and supports a maximum on time of 7.2 seconds and a maximum off time of 112.8 seconds.
Internal Product Review
The RZW03.1-110-006 is a Bosch Rexroth Indramat RZW braking resistor with 110 kW power data and 3.1 Ω resistance. IP23 protection and a 100 s thermal time constant support dependable braking performance in demanding drive systems. A 6% operating factor and 2.5 Ω minimum connectable resistance make the resistor a strong fit for high-energy dissipation applications.
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Product Description:
The RZW03.1-110-006 is a braking resistor element from Bosch Rexroth Indramat that belongs to the RZW Braking Resistors series. During regenerative deceleration of servo drives or inverters, the unit converts excess DC-bus energy into heat so the drive can stop loads without causing an overvoltage condition. It is intended for integration into panels or cabinets within industrial automation systems that require periodic but intense energy dissipation. This function allows energy returned by a decelerating motor to be removed from the intermediate circuit rather than retained on the DC bus.
The resistor is rated for 110 kW of pulse power during active braking, and its nominal resistance is 3.1 Ω. This resistance allows the unit to draw braking current from the drive’s intermediate circuit while remaining within the applicable electrical limits. The maximum duty window permits an energized interval of 7.2 s, followed by a required cooldown period of 112.8 s. These operating periods provide a 6% SD duty factor that prevents excessive heat accumulation during repeated braking cycles. The aluminum-clad body measures 520 mm in height, 795 mm in width, and 490 mm in depth to provide sufficient surface area for heat dissipation. Its conductor connection area accepts cables with a cross-sectional area of 50 mm², helping to minimize resistive losses at the terminals. The unit has a design index of 1 and is compatible with the standard mounting frames used for the RZW product group.
Multiple units can be connected in parallel when a drive requires a network with lower equivalent resistance, provided that the combined resistance remains above 2.5 Ω. The housing has an IP23 rating, which protects against contact with solid objects larger than 12.5 mm and against water sprayed at angles of up to 60 degrees from vertical. Openings in the enclosure permit vertical airflow to remove heat generated during braking. The unit has a thermal time constant of 100 s, allowing its temperature to rise and fall predictably during the prescribed operating and cooldown intervals. The assembly weighs 51 kg, allowing it to be installed in a suitable floor-standing industrial enclosure without placing an excessive load on the mounting structure.
