RZW03.1-055-040
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The RZW03.1-055-040 braking resistor boasts a power rating of 50 kW at 100% SD, a resistance of 5.5 Ω at 40% SD, and a protection class of IP 23. As part of the RZW Braking Resistors series by Bosch Rexroth Indramat, it weighs 25 kg and requires free air circulation for optimal operation.
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Product Description:
Bosch Rexroth Indramat manufactured the RZW03.1-055-040. 50 kW at 100% duty cycle, the Bosch Rexroth Indramat RZW03.1-055-040 brake resistor is designed to withstand high power dissipation. The maximum continuous power the resistor can safely dissipate as heat without exceeding its thermal limits – based on Joule’s law – is shown by this rating. This states that power dissipation is proportional to the square of the voltage divided by the resistance (P = V²/R) or the square of the current and resistance (P = I²R). In practical terms, this brake resistor has to efficiently convert kinetic energy – which is often generated when equipment decelerates – into thermal energy. The 100% duty cycle shows it can do this constantly without overheating, while the 50 kW rating means it can handle big energy surges, so it’s suitable for applications that need quick and controlled braking. At 40% duty cycle, the RZW03.1-055-040 brake resistor has a resistance of 5.5 Ω. According to Ohm’s law (V = IR), this resistance value measures the resistance to current flow through the resistor and has a direct impact on the voltage drop and braking torque.
By reducing the average power dissipation, the 40% duty cycle affects the resistor’s thermal management as it only works at this resistance level for 40% of each cycle. This helps to reduce overheating as the average amount of heat generated during intermittent operation is less than during continuous operation. By controlling the brake current, the exact value of 5.5 Ω ensures consistent braking performance and allows motor-driven systems to decelerate precisely, which is critical in industrial automation applications. The RZW03.1-055-040 brake resistor has an IP 23 protection level and is designed to withstand environmental elements often found in industrial environments. ‘2’ the first number, means protection against solid objects bigger than 12 mm to avoid accidental contact with exposed components. The second number, ‘3’, means the resistor is resistant to water spraying at an angle of up to 60 degrees from the vertical.
To be able to work in various industrial environments, the IP 23 certification provides the best compromise between protecting the internal components and allowing airflow for heat dissipation. The 25 kg weight of the RZW03.1-055-040 brake resistor has to be taken into account during the installation and integration of the system. The mass of the resistor means it can absorb and hold more heat. This means it will take longer to cool down after high-power dissipation. Its weight is a key factor in the overall thermal management approach as it affects how soon the component reaches room temperature after severe braking events. Because the weight of the resistor requires proper structural support to avoid stressing the mounting hardware, its mass also affects the mechanical design.
Frequently Asked Questions about RZW03.1-055-040:
Q: What is the power rating of the RZW03.1-055-040 braking resistor?
A: The RZW03.1-055-040 braking resistor has a power rating of 50 kW at 100% duty cycle (SD), providing significant energy dissipation for industrial automation applications.
Q: What is the resistance value of the RZW03.1-055-040 braking resistor at 40% duty cycle?
A: At 40% duty cycle, the RZW03.1-055-040 braking resistor has a resistance of 5.5 Ω, allowing controlled braking performance.
Q: What is the protection class of the RZW03.1-055-040 braking resistor?
A: The RZW03.1-055-040 braking resistor has a protection class of IP 23, meaning it is protected against solid objects larger than 12 mm and water spray from any direction.
Q: What is the weight of the RZW03.1-055-040 braking resistor?
A: The RZW03.1-055-040 braking resistor weighs 25 kg, which is typical for industrial-grade resistors designed to handle high power.
Q: What are the installation requirements for the RZW03.1-055-040 braking resistor?
A: The RZW03.1-055-040 braking resistor requires free air circulation for optimal thermal management and must be installed in a non-aggressive operating environment.
