Specifications Overview:
The MDR-20 series includes models MDR-20-5, MDR-20-12, MDR-20-15, and MDR-20-24, each providing different DC voltage outputs of 5V, 12V, 15V, and 24V respectively. The rated current varies from 1A to 3A, with a power range of 15W to 24W. The output voltage adjustment range and ripple & noise levels are specified for each model, ensuring precise voltage regulation.

Input and Efficiency:
The power supplies operate within a voltage range of 85 ~ 264VAC and 120 ~ 370VDC, with a frequency range of 47 ~ 63Hz. Efficiency varies across models, from 76% to 84%. The typical AC current is 0.55A at 115VAC and 0.35A at 230VAC, with inrush current peaking at 20A/115VAC and 40A/230VAC.

Protection Features:
Overload protection is provided through constant current limiting, with automatic recovery post-fault. Overvoltage protection involves shutting down the output voltage, requiring a re-power to recover.

Environmental Conditions:
The units are designed to operate in temperatures ranging from -20°C to +70°C, with storage conditions of -40°C to +85°C. They can withstand humidity levels of 20 ~ 90% RH non-condensing.

Safety and Standards:
The MDR-20 series complies with safety standards such as UL508, TUV EN60950-1, and BSMI CNS14336-1. EMC compliance includes EN55011, EN55032, and EN61000 series standards, ensuring robust performance in industrial environments.

Mechanical and Installation:
The dimensions are 22.5*90*100mm, and the units are designed for DIN rail installation (TS35/7.5 or TS35/15). The power supplies feature a DC OK active signal for monitoring output status.

Additional Features:
The block diagram and derating curves provide insights into the internal circuitry and performance under varying conditions. The units are equipped with EMI filters, rectifiers, and power switches to ensure stable operation.