PLCs, Power Supplies & Others

Power Supply Overview

The Schneider DTA 025 power supply converts AC mains voltage into stable DC power for automation systems. This compact unit belongs to the Modicon DTA power supply family. It delivers 25 watts of continuous output power for small to medium control cabinets. Machine builders appreciate its slim design and high efficiency.

Input Voltage and Frequency Range

This power supply accepts 85 to 264 V AC input voltage for worldwide compatibility. It operates on 47 to 63 Hz frequency ranges without adjustment. The unit also accepts 110 to 370 V DC input for industrial applications. A built-in surge limiter handles transient voltages up to 4 kilovolts. This wide input range ensures reliable operation with unstable mains supplies.

Output Specifications and Regulation

The Schneider DTA 025 provides 24 V DC nominal output with ±2% regulation. It delivers 1.05 amperes of continuous output current at full load. The output voltage adjusts from 22 to 28 V DC via a front potentiometer. Ripple and noise stay below 50 millivolts peak-to-peak for sensitive loads. This clean DC output suits PLCs, sensors, and small actuators.

Protection Features and Safety

This power supply includes overload protection with automatic current limiting. It incorporates short-circuit protection with hiccup restart mode. Overvoltage protection clamps the output at 30 V DC maximum. Thermal shutdown activates when internal temperature exceeds 85°C. These protective circuits safeguard the connected automation equipment.

Efficiency and Power Factor

The Schneider DTA 025 achieves 87% efficiency at full rated load. This high efficiency reduces energy waste and heat generation. The power factor corrects to 0.95 under nominal operating conditions. The unit complies with EN 61000-3-2 harmonic standards. Its efficient design lowers cabinet cooling requirements significantly.

LED Status Indicators

A green LED illuminates when the output voltage operates normally. A red LED signals any fault condition like overcurrent or overtemperature. The indicator provides clear visual feedback for troubleshooting. Operators can verify power status without using measuring tools. This simplicity accelerates system start-up procedures.

Physical Dimensions and Mounting Options

The unit measures 45 millimeters in width for space-saving installation. Its height totals 90 millimeters with a depth of 55 millimeters. The power supply weighs 0.25 kilograms for easy handling. It mounts onto standard 35-millimeter DIN rails securely. The spring-loaded clips permit quick installation and removal.

Terminal Connections and Wiring

A 6-pin screw terminal block accepts AC input and DC output connections. The input terminals accommodate wire sizes up to 2.5 square millimeters. The output terminals handle up to 1.5 square millimeter conductors. Each terminal includes a protective cover for accidental contact. This straightforward wiring saves installation time.

Cooling and Thermal Management

The Schneider DTA 025 uses natural convection cooling without a fan. The aluminum housing dissipates heat efficiently to the surroundings. It operates continuously at full load within 0°C to 50°C ambient. Derating applies linearly above 50°C up to 60°C maximum. This fanless design ensures silent and maintenance-free operation.

Environmental Compliance

This power supply operates at 20% to 90% relative humidity without condensation. It meets EN 61131-2 standards for programmable controller power supplies. The unit carries CE, UL, and cUL certification marks. It complies with RoHS environmental protection directives. The IP20-rated enclosure suits industrial control panel installations.

Technical Specifications Table

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