Mean Well DR‑100‑24 DIN‑Rail Switching Power Supply
Mean Well DR‑100‑24 is a 100‑class DIN‑rail mounted switching power supply widely used in industrial automation cabinets. It converts AC mains input into stable 24VDC output for PLC, sensors, relays and field low‑voltage control components.

This unit features compact DIN‑rail housing and complete protection circuits against overvoltage, overcurrent and short‑circuit. It is commonly deployed as standard or replacement spare part for factory machinery, water treatment and process control cabinet retrofitting projects.
Main Specifications
- Brand: Mean Well
- Model: DR‑100‑24
- Product Type: DIN‑Rail Switching Power Supply
- AC Input: 85‑264 VAC
- DC Output: 24VDC, 4.2A, 100.8W
- Mounting: Standard DIN‑rail installation
- Protection: Over‑voltage, over‑current, short‑circuit protection
- Indicator: DC‑OK power status LED
- Certification: CE, UL industrial approval
- Operating Temperature Range: 0°C ~ +60°C
Core Functions
- Convert wide‑range AC input into regulated 24VDC for industrial field devices
- Supply power for PLC, proximity sensors, transmitters, relays and contactor coils
- Multi‑level built‑in protection prevents damage caused by short‑circuit and abnormal load
- DIN‑rail clip design enables fast installation and removal inside electrical cabinets
- Front‑panel LED quickly indicates power normal or fault status for on‑site troubleshooting
- High efficiency switching design reduces heat generation inside enclosed cabinet space
- Compact narrow body saves cabinet space for dense automation layout
- Wide AC input tolerance adapts to unstable power grid in workshop environment
- Metal housing improves anti‑interference capability for industrial electromagnetic noise
- Provide stable low‑voltage power for continuous automatic control and signal acquisition loops
Application Scenarios
- Factory automation PLC and DCS control cabinet auxiliary power supply
- Water supply and sewage treatment plant on‑site signal acquisition control racks
- Packaging machinery, assembly line and conveyor automation equipment
- Petrochemical and chemical plant field instrument auxiliary power units
- Building automation, access control and monitoring system power distribution cabinets
- Material processing machinery, textile and woodworking equipment electrical cabinets
- Automation system upgrade, power supply replacement and cabinet reconstruction projects
- Industrial cabinet spare‑parts inventory and on‑site maintenance supporting projects