High-Efficiency Three-Phase AC-DC Power Supplies for Industrial DIN Rail Systems

[Ahmet Ö.]

## High-Efficiency Three-Phase AC-DC Power Supplies for Industrial DIN Rail Systems

TDK-Lambda adds 480W and 960W models to its DRB series, offering a 50% increase in power capacity and compact dimensions for complex automation environments.

### DRB Series Expansion
These new three-phase AC-DC power supplies are designed for demanding industrial applications. Providing 480W and 960W of continuous output power, they ensure reliable and stable power delivery for factory automation, process control, and communication infrastructure.

### Peak Power Capability and Load Management
The 480W model can reach a peak power capacity of 720W, and the 960W model can reach 1440W for 7 seconds. This provides an advantage in meeting high inductive and capacitive loads. Additionally, the constant current overload feature prevents system shutdowns during high inrush currents.

By offering a very low energy inrush current at startup, unnecessary tripping of input circuit breakers is prevented in automotive data systems or industrial racks where multiple power supplies are used together.

### Technical Specifications

• Power output: 480W and 960W continuous power
• Peak power: 720W (480W model), 1440W (960W model) - 7 seconds
• Input Voltage Range: 350 - 575VAC
• Adjustable Output Voltages:

- 24V models: 22.5 - 29V
- 48V models: 45 - 56V
- 72V models: 70 - 85V

• Efficiency: Up to 96.3%
• Width: 65mm (480W), 100mm (960W)
• Circuit breaker protection with low energy inrush current
• DC OK relay contact and remote on/off function
• Standby power consumption: < 2.3W
• Operating temperature: -25°C to +70°C (derating above 55°C)
• Housing: Robust metal casing

### Standards and Durability
The products comply with IEC/EN/UL/CSA 62368-1, 61010-1, and 61010-2-201 safety standards. EMC compliance is ensured by EN 55011-B, CISPR11-B, IEC/EN 61000-6-2, and EN 61000-3-2 (Class A) standards. They carry CE and UKCA marks. Conformal coating options are available for protection against dust and corrosion in harsh environmental conditions.

Thanks to their high efficiency and durability features, the DRB series can be reliably chosen for industrial automation applications.