Overview
The B&R Power Panel 4P0420.00-490 is a high‑performance power distribution and control unit designed for industrial automation environments. As part of B&R’s renowned automation portfolio, this power panel provides a robust and efficient solution for managing electrical power to various control systems, actuators, sensors, and other field devices. Its compact construction, flexible integration options, and advanced safety features make it suitable for a wide range of applications, including manufacturing lines, process control stations, building automation, and renewable energy systems.
Unlike generic power supplies, the 4P0420.00-490 is engineered to meet the demanding requirements of continuous industrial operation. It delivers stable 24V DC output, ensuring that sensitive electronic components receive clean, regulated power. With an intuitive user interface and multiple communication ports, this panel simplifies system configuration and monitoring, helping engineers reduce downtime and improve overall productivity.
Key Features and Benefits
The 4P0420.00-490 incorporates several design elements that distinguish it from conventional power panels. Below are its most significant characteristics:
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Precise Voltage Regulation – The unit accepts a wide input voltage range (380V AC ±10%) and provides a tightly regulated 24V DC output (±1%). This ensures that connected automation devices operate within their specified voltage tolerances, reducing the risk of erratic behavior or damage.
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High Power Output – With a maximum output power of 5 kW and a DC output current rating of 10 A, the panel can supply sufficient energy for medium‑sized control cabinets, including PLCs, HMI terminals, I/O modules, and communication converters.
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Forced Air Cooling – An internal fan maintains optimal operating temperatures even when the panel is installed in enclosures with limited natural convection. This thermal management approach extends component life and ensures consistent performance under high loads.
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Dual Mounting Options – The unit supports both wall‑mounting and rack‑mounting configurations, giving system integrators flexibility to optimize cabinet layout.
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Comprehensive Communication Interfaces – Equipped with Ethernet, USB, RS232, and RS485 ports, the Power Panel can easily exchange data with higher‑level control systems, remote I/O stations, and diagnostic tools. This connectivity also enables firmware updates and remote monitoring.
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User‑Friendly Control Interface – A combination of a touchscreen and a keypad allows operators to monitor input/output parameters, view alarm logs, and adjust settings without external programming devices. The graphical interface is straightforward and designed for industrial environments.
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Rugged Enclosure – The IP20 protection rating safeguards internal components against dust and accidental contact, making the panel suitable for installation in clean control rooms or well‑protected industrial cabinets.
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Safety Compliance – The device is certified according to CE, UL, and RoHS standards, ensuring that it meets international requirements for electrical safety and material restrictions.
Technical Specifications
The following table summarises the key technical parameters of the B&R Power Panel 4P0420.00-490:
| Parameter | Details |
|---|---|
| Model | 4P0420.00-490 |
| Product Type | Power Distribution and Control Panel |
| Input Voltage | 380V AC ±10% (3‑phase) |
| Input Frequency | 50–60 Hz |
| Output Voltage | 24V DC ±1% |
| Maximum Output Power | 5.0 kW |
| Input Current Rating | 16 A (AC) |
| Output Current Rating | 10 A (DC) |
| Cooling Method | Forced air (internal fan) |
| Control Interface | Touchscreen + Keypad |
| Communication Ports | Ethernet, USB, RS232, RS485 |
| Enclosure Protection | IP20 (dust protected) |
| Operating Temperature | –10°C to +60°C |
| Storage Temperature | –25°C to +85°C |
| Dimensions (H × W × D) | 450 mm × 320 mm × 230 mm |
| Weight | 6.2 kg |
| Mounting Options | Wall or rack mount |
| Certifications | CE, UL, RoHS |
Performance and Efficiency
The 4P0420.00-490 is built around an efficient power conversion topology that minimises energy losses. By using modern switching components and precise control algorithms, it achieves a high power factor and low standby consumption. When installed in systems with variable loads, the panel automatically adjusts its output characteristics to maintain voltage stability, preventing brownouts or overvoltage conditions that could damage downstream electronics.
Moreover, the built‑in power quality monitoring function continuously checks input voltage, current, and frequency. In the event of a deviation beyond acceptable limits, the panel can generate an alarm or even shut down the output to protect connected equipment. This proactive protection is especially valuable in facilities with unstable grid supplies or where heavy machinery causes voltage sags.
Long‑Term Reliability
Industrial environments often subject equipment to temperature fluctuations, vibration, electrical noise, and dust. The 4P0420.00-490 is designed to withstand these challenges. Its robust enclosure, high‑grade components, and conservative derating strategy ensure a long service life. The forced air cooling system uses a maintenance‑friendly fan that can be replaced without special tools, further reducing downtime.
The control panel also includes comprehensive self‑diagnostic routines. When a fault is detected (e.g., overtemperature, overcurrent, output short circuit), the unit clearly indicates the problem on its display and, if configured, sends an alert via the communication interface. This feature helps maintenance teams quickly identify and resolve issues, keeping production lines running.
Integration with Automation Systems
The B&R Power Panel 4P0420.00-490 is designed to work seamlessly within B&R’s automation ecosystem, but it can also be integrated into third‑party control architectures. Thanks to its support for standard industrial protocols (Ethernet, RS232, RS485), it can communicate with PLCs from different manufacturers as well as SCADA systems, data loggers, and remote I/O devices.
For example, a plant engineer can use the Ethernet port to read the panel’s status (output voltage, load current, temperature) into a central monitoring system. This data can be used for preventive maintenance, trend analysis, or real‑time dashboards. The USB port offers a convenient way to update firmware or export configuration files using a simple flash drive.
Application Scenarios
The versatility of the 4P0420.00-490 makes it suitable for a wide variety of industrial applications:
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Manufacturing and Assembly Lines – The panel supplies stable 24V DC to PLCs, HMI panels, conveyor drives, and robotic controllers, ensuring smooth production flow.
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Process Control (Chemical, Food & Beverage, Water Treatment) – In facilities where continuous operation is critical, the 4P0420.00-490 provides reliable power to measurement instruments, valve actuators, and safety relays.
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Machine Building – Machine builders can use this power panel as part of a standardised control cabinet, delivering power to all low‑voltage components while offering diagnostic feedback for quicker commissioning.
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Building Automation – For HVAC control, lighting systems, and access control panels, the panel’s compact size and quiet operation are advantageous.
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Renewable Energy Installations – In solar trackers or small wind turbines, the panel converts and distributes power to control boards and communication modules.
Why Choose the B&R Power Panel 4P0420.00-490?
Choosing a power distribution panel for an industrial automation system involves many factors: reliability, safety, ease of integration, and long‑term support. The 4P0420.00-490 excels in all these areas.
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Proven Engineering – B&R has decades of experience in automation hardware, and this product inherits that legacy of quality.
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Reduced Engineering Effort – With multiple communication ports and a clear interface, system designers save time during setup and debugging.
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Future‑Ready – Firmware updates can be applied via USB or Ethernet, allowing the panel to adapt to changing network requirements or security patches.
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Global Compliance – CE and UL certifications mean the panel can be used in projects destined for Europe, North America, and many other regions.
Conclusion
The B&R Power Panel 4P0420.00-490 is a feature‑rich, dependable power distribution solution that meets the needs of modern industrial automation. It combines precise voltage regulation, ample output capacity, extensive connectivity, and user‑friendly operation in a compact enclosure. Whether you are designing a new control cabinet, upgrading an existing system, or standardising power management across multiple production lines, this power panel offers the performance and flexibility required to achieve high system availability and low total cost of ownership.
By integrating the 4P0420.00-490 into your automation architecture, you can ensure that all downstream devices receive clean, stable power, minimising unexpected stoppages and protecting your investment in control hardware. Its easy‑to‑use interface and diagnostic tools also make it an asset for maintenance teams, enabling rapid fault identification and resolution. For any industrial facility that values uptime, safety, and efficiency, the B&R Power Panel 4P0420.00-490 represents a smart choice.