The SolaHD SDN20-24-100C, manufactured by Emerson, is a high-performance 480W DIN rail power supply designed for the most demanding industrial applications . As part of the next-generation SDN-C series, this unit combines a compact footprint with the legendary reliability of SolaHD. It delivers a nominal 24 VDC output with a robust 20 Amps of current, featuring a user-adjustable voltage range of 22.5 to 28.5 VDC to accommodate various system requirements . With a universal AC input range of 100-240VAC (85-264VAC full range), this switcher is ready for global use .
Key Features & Benefits
- Universal Input & High Output: Operates on a wide input range of 100-240VAC/DC (85-264VAC / 90-375VDC) and provides a stable, adjustable output of 24-28VDC at 20A (480W) .
- Industrial-Grade Reliability: Designed with a wide operating temperature range (-40°C to +70°C) and coated for harsh environments, it is suitable for extreme conditions, including hazardous locations .
- High Efficiency & PowerBoost™: Boasts a typical efficiency of 92% , reducing energy costs and heat generation. The PowerBoost™ overload capability ensures reliable startup of high-inrush loads .
- Parallel Operation & Diagnostics: Standard parallel capability allows for increased power or redundant system configurations. Visual diagnostic LEDs provide at-a-glance status for input and output, simplifying maintenance .
- Space-Saving Design: The compact, patented DIN rail mounting clip saves valuable panel space while ensuring a secure installation .
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer / Series | SolaHD (a brand of Emerson) / SDN-C Series |
| Part Number | SDN20-24-100C (Alternate: SDN2024100C) |
| Input Voltage (AC) | 85-264 VAC (100-240 VAC nominal) |
| Input Voltage (DC) | 90-375 VDC |
| Output Voltage | 24 VDC Nominal (Adjustable range: 22.5 – 28.5 VDC) |
| Output Current | 20 Amps |
| Output Power | 480 Watts |
| Efficiency | Up to 92% typical |
| Mounting Style | DIN Rail Mount |
| Operating Temperature | -40°C to +70°C (with appropriate derating) |
| Dimensions (HxWxD) | 4.88 x 3.43 x 4.98 inches (124 x 87 x 126.6 mm) |
| Certifications & Approvals | Hazardous Locations: Class I Div. 2, ATEX; Safety: UL 508, CSA C22.2 No. 107.1, UL 60950, CE, RoHS |
| Protection | Overvoltage, Overload, Short Circuit Protection |
| IP Rating | IP20 (Finger-safe) |
Applications
The SDN20-24-100C is ideal for a wide range of industrial and process control applications, including:
- Industrial Machine Control and Process Control
- Material Handling and Conveying Equipment
- Packaging and Amusement Park Equipment
- Semiconductor Fabrication Equipment
- Automation & Process Control, PLC and DCS systems
- Telecommunications and networking equipment















