UAA326A04 High-Capacity Industrial DIN-Rail Power Supply

Description

UAA326A04

The ABB UAA326A04 is a high-capacity DIN-rail mounted power supply designed to meet the increased power demands of large-scale industrial control systems. Its primary function is to convert 100-240V AC input voltage into a regulated 24V DC output, capable of delivering up to 16.7A of current—significantly more than standard power supplies in its class. Like its counterparts in the UAA326 series, the UAA326A04 incorporates advanced protection mechanisms, including overload, short-circuit, overvoltage, and overtemperature protection, safeguarding connected equipment and ensuring system resilience during electrical faults.

UAA326A04

Positioned as a central power hub in control cabinets, the ABB UAA326A04 integrates seamlessly into industrial automation stacks. Its space-efficient design maximizes cabinet utilization despite its higher power output, while DIN-rail mounting enables straightforward installation alongside other control components. The power supply features a wide input voltage range, making it suitable for global deployment, and its rugged construction ensures reliable operation in environments with temperature variations, vibration, and electromagnetic interference—common in large industrial facilities.

UAA326A04

Main features and advantages:

Selecting the ABB UAA326A04 delivers significant advantages for large-scale industrial control systems. Its high 400W power rating eliminates the need for multiple smaller power supplies, reducing cabinet clutter and simplifying wiring complexity—directly lowering installation costs and improving system maintainability. The unit’s exceptional efficiency of up to 94% minimizes energy waste and heat generation, contributing to lower operating costs and extending the lifespan of surrounding components by maintaining cooler cabinet temperatures.

Engineered for reliability, the ABB UAA326A04 provides stable 24V DC power even during input voltage fluctuations, ensuring consistent performance of power-hungry devices like motor drives and high-density I/O modules. Its comprehensive protection suite prevents damage to expensive control equipment during electrical anomalies, reducing repair costs and unplanned downtime. The power supply’s ability to handle high inrush currents makes it ideal for systems with multiple devices starting simultaneously, a common scenario in manufacturing and process control applications.

UAA326A04

Application areas:

The ABB UAA326A04 excels in industries requiring high-power industrial control systems. In large manufacturing plants, it powers complex production lines with multiple robotic cells, conveyor systems, and inspection stations, ensuring consistent operation even during peak power demand. Its high current capacity is particularly valuable in these environments, where simultaneous operation of multiple motors and actuators creates significant power requirements.

In oil and gas processing facilities, the UAA326A04 provides stable power to extensive control networks monitoring and regulating pumps, valves, and separators across large sites. Its wide operating temperature range allows installation in both climate-controlled control rooms and outdoor equipment enclosures. In water treatment plants with extensive filtration and pumping systems, the power supply supports multiple control loops and communication devices, ensuring reliable operation of critical infrastructure. In all these applications, the ABB UAA326A04 delivers the high-capacity power stability needed for large-scale industrial automation.

UAA326A04

Related products:

ABB UAA326A02 – 150W mid-range power supply for medium-scale systems requiring 6.3A output.

ABB UAA326A05 – 600W higher-capacity version for extremely power-intensive applications.

ABB TB860 – Heavy-duty terminal block accessory for secure high-current connections with UAA326A04.

ABB UDC240 – DC-DC converter for isolated power distribution from UAA326A04 in large systems.

ABB PSR100-240AC/24DC/10 – Redundant power supply system compatible with UAA326A04 for mission-critical setups.

ABB AC500-eCo PLC – Controller seamlessly integrated with UAA326A04 in high-power control solutions.

ABB CI858 – High-speed communication module powered efficiently by UAA326A04 in large networks.

ABB UAA326A14 – Enhanced version with extended temperature range (-40°C to +75°C) for extreme environments.

UAA326A04

Installation and maintenance:

Before installing the ABB UAA326A04, verify that the input voltage matches the mains supply (100-240V AC) and calculate total power consumption of connected devices to ensure it stays below the 400W rating. Check that the DIN rail is securely mounted and capable of supporting the unit’s weight (1.2kg). Ensure adequate ventilation space around the power supply—maintaining 100mm clearance above and below is critical for heat dissipation in high-power operation. Confirm the cabinet environment stays within the specified operating temperature range to prevent thermal shutdown.

For ongoing maintenance, regularly inspect status indicators to monitor operational health—overload or overtemperature conditions will trigger visual alerts. Check high-current connections quarterly to ensure terminals remain tight and free from corrosion, as loose connections can cause voltage drops and overheating. Measure output voltage annually with a calibrated meter to verify it stays within the ±2% tolerance range. Clean dust from cooling vents semi-annually to maintain efficient heat dissipation, especially in dusty industrial environments.

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