RZW03.1-045-006

Product Description:

Bosch Rexroth Indramat manufactured the RZW03.1-045-006. Bosch Rexroth Indramat makes the RZW03.1-045-006. The Bosch Rexroth Indramat RZW03.1-045-006 brake resistor can dissipate 40 kW of peak power. A key point, the peak power rating means the resistor can handle and release large amounts of electrical energy in an instant without going above operating limits or getting damaged. The rapid motor deceleration can produce a lot of regenerative energy in industrial automation applications, and the brake resistor absorbs it. By avoiding overvoltage situations on the DC bus, the resistor’s ability to manage these power spikes is crucial to keeping the system intact. This ensures the performance and safety of the connected equipment by making the drive system reliable. The resistor’s ability to handle such high peak power is directly related to its internal design, which includes the selection of resistive parts and thermal management.

The RZW03.1-045-006 brake resistor’s housing is made of galvanized steel, a material choice that shows a deep understanding of materials science. Applying a layer of zinc to steel by galvanization improves its corrosion resistance, which is important in industrial environments where dust, moisture and potentially corrosive substances are present. Even under harsh conditions, the resistor’s mechanical lifetime is guaranteed by its robust design. Furthermore, the galvanized steel housing supports the whole thermal management by promoting heat dissipation through convection and conduction. The housing keeps the resistor’s operating temperature within safe limits by transferring the heat to the surrounding environment. This keeps thermal stress away and prolongs the component’s life. The thermal time constant of 150 seconds is a measure of its thermal behavior. Under continuous power dissipation, this value shows how long it takes for the resistor’s temperature to settle at 63.2% of its final value.

The resistor’s moderate thermal response to power load variations (150 seconds thermal time constant) allows it to manage occasional high power spikes without an uncomfortable temperature increase. A higher thermal time constant means when power dissipation stops the resistor cools down slower. This has to be considered by the engineers to keep the resistor’s temperature within operating limits, avoid thermal runaway and maximize performance during long operation. The RZW03.1-045-006 brake resistor has an ingress protection (IP) rating of IP23. This means the resistor can withstand the usual environmental conditions found in industrial environments, even if it’s not waterproof. Since a fully sealed enclosure would prevent the flow of thermal energy during operation, the IP23 rating is a compromise between protection and heat dissipation.