SDR-120-24

Product Description

Home > Products > Mean Well > DIN Rail Power Supplies Need Mean Well SDR-120-24? DIN Rail Power Supply for Industrial control systems, automation equipment, process control, building automation. Supplied with... Price & Availability It accepts a wide input voltage range of 85-264VAC (or 120-370VDC) and is designed for continuous operation under demanding conditions. The unit features a slim, compact metal housing (width only 40mm) that easily snaps onto standard 35mm DIN rails (TS-35/7.5 or TS-35/15), making it ideal for space-constrained control cabinets. With an efficiency of up to 89%, it minimizes heat generation and energy waste, contributing to lower operational costs. This power supply is engineered with a robust design that includes protection against short circuits, overloads, overvoltages, and over-temperature conditions. It employs a cooling method of free air convection, ensuring silent operation without the need for fans. The SDR-120-24 is certified to international safety standards including UL 508, EN 60950-1, and IEC 62368-1, and it meets the EMC requirements of EN 55032 and EN 55024. Its MTBF (Mean Time Between Failures) is rated at 700,000 hours, demonstrating high reliability for long-term industrial use. The SDR-120-24 is part of Mean Well's SDR series, which is known for its cost-effectiveness and high performance. It features a built-in DC OK relay contact and a green LED indicator for output status, allowing easy monitoring. The unit also supports parallel operation for redundancy (with optional ORing diodes) and can be used in a wide range of applications including factory automation, process control, building automation, and test and measurement equipment. With its comprehensive protection features and compliance with global standards, the SDR-120-24 is a trusted choice for engineers and system integrators. The Mean Well SDR-120-24 is a 120W single-output industrial DIN rail power supply that delivers a stable 24V DC output with a rated current of 5A. Basic Product Information Slim design: width only 40mm, fits on 35mm DIN rail High efficiency up to 89% Built-in DC OK relay contact and LED indicator Complete protection: short circuit, overload, overvoltage, over temperature Free air convection cooling, no fan required Approved to UL 508, EN 60950-1, IEC 62368-1, and EMC standards MTBF of 700,000 hours Wide input voltage range 85-264VAC / 120-370VDC Technical Specifications Version & Model Difference The SDR-120-24 is part of the SDR series, which includes models with different output voltages and currents such as SDR-120-12 (12V/10A), SDR-120-24 (24V/5A), and SDR-120-48 (48V/2.5A). The series shares the same mechanical design and features, but the output voltage and current ratings differ. Compared to older Mean Well DIN rail supplies like the DR series, the SDR series offers a slimmer profile and higher efficiency. There are no major version changes within the SDR-120-24 model itself, but Mean Well may have made minor revisions over time to comply with updated safety standards (e.g., from EN 60950-1 to IEC 62368-1). Always check the label for the latest certification marks. Application Scenarios Can the SDR-120-24 be used for parallel operation to increase output power? Yes, the SDR-120-24 supports parallel operation of up to 2 units to increase output power or for redundancy. However, it is recommended to use external ORing diodes to prevent reverse current flow. For redundancy, Mean Well offers dedicated redundancy modules like the DRDN20 or DRDN40. What are the protection features of the SDR-120-24? The SDR-120-24 provides comprehensive protection against short circuits, overloads (105-135% of rated output power), overvoltages (29-33V), and over-temperature conditions. The overload protection is hiccup mode, while overvoltage protection is latch mode, requiring a power reset to recover. What is the operating temperature range and derating? The SDR-120-24 can operate in ambient temperatures from -20°C to +70°C. However, output power must be derated linearly from 100% at 60°C to 50% at 70°C. The unit uses free air convection cooling, so adequate ventilation is required in high-temperature environments. What is the input voltage range of the Mean Well SDR-120-24? The SDR-120-24 accepts a wide input voltage range of 85-264VAC (47-63Hz) or 120-370VDC, making it suitable for use in various countries with different mains voltages. Mean Well NES-100-24 Power Supply (24V 4.5A 100W) Meanwell S-600 24 24V 25A LRS-350W Industrial Switching Power Supply Mean Well MDR-20-12 Power Supply (12V 1.67A) Mean Well QYL-1000-15 Power Supply Mean Well 1DRT-24 DIN-Rail Switch Mode Power Supply (24 V) Mean Well WDR-240-24 DIN-Rail Power Supply MEAN WELL NDR-480-24 DIN Rail Power Supply 480W 24V MEAN WELL NDR-240-24 DIN Rail Power Supply 240W 24V