NDR-75-24 AC/DC Converter: Industrial Power Supply by MEAN WELL | 24V 77W DIN Rail
NDR-75-24 AC/DC Converter: The Ultimate Industrial Power Solution by MEAN WELL
The NDR-75-24 from MEAN WELL USA Inc. is a top-tier industrial-grade AC/DC converter engineered for reliability in demanding environments. As part of MEAN WELL's renowned NDR series, this 24V 77W power supply combines robust performance with energy efficiency, making it a preferred choice for automation, machinery, and IT infrastructure.
Comprehensive Product Overview
- Model: NDR-75-24
- Manufacturer: MEAN WELL USA Inc. (Industry Leader Since 1982)
- Power Rating: 77W continuous output
- Mounting Style: DIN Rail (TS35/7.5/15 compatible)
- Certifications: UL/cUL 60950-1, EN 62477-1 (CB Scheme), CE, TUV
Advanced Technical Specifications
Input Characteristics
Designed for global deployment, the NDR-75-24 features:
- Universal AC Input: 90-264VAC (47-63Hz)
- DC Input Range: 127-370VDC
- Inrush Current: <20A at 115VAC (cold start)
- Leakage Current: <0.75mA at 240VAC
Output Performance
- Output Voltage: 24VDC 1% (adjustable 22.8-26.4V)
- Current Capacity: 3.2A max (3.5A peak for 5s)
- Ripple & Noise: <150mVp-p (20MHz bandwidth)
- Load Regulation: 1% (20-100% load)
- Line Regulation: 0.5% (full input range)
Industry-Leading Efficiency & Protection
With 88% typical efficiency, the NDR-75-24 exceeds industry standards while featuring:
- Protections: Short circuit/Overload/Over voltage/Over temperature
- Isolation Voltage: 3kV AC input-output, 1.5kV AC input-FG
- Cooling: Natural convection (no fan required)
- MTBF: >300,000 hours per MIL-HDBK-217F
Environmental Durability
- Operating Temperature: -20 C to +70 C (with derating above 60 C)
- Storage Temperature: -40 C to +85 C
- Humidity: 20-95% RH (non-condensing)
- Altitude: Up to 5,000 meters
- Vibration Resistance: 5G (10-500Hz, 1hr/axis)
Mechanical Design
- Dimensions: 102 x 32 x 125.2mm (LxWxH)
- Weight: 420g
- Connections: Screw terminals (input/output)
- Indicators: Green LED power-on
Application Scenarios
The NDR-75-24 excels in:
- Industrial Automation: PLCs, motor controls, sensors
- Telecommunications: Network equipment, base stations
- Building Automation: HVAC controls, access systems
- Medical Equipment: Diagnostic devices (non-patient contact)
- Transportation Infrastructure: Signaling systems, EV charging
Why Professionals Choose NDR-75-24
- Reliability: 5-year warranty with <1% failure rate
- Global Compliance: Meets international safety/EMC standards
- Maintenance-Free: Fanless design eliminates moving parts
- Scalability: Parallel operation possible for higher power needs
- Cost-Effective: Reduced energy consumption lowers TCO
Competitive Advantages
Compared to generic power supplies, the NDR-75-24 offers:
| Feature | NDR-75-24 | Standard Converters |
|---|---|---|
| Input Range | 90-264VAC | Typically 100-240VAC |
| Efficiency | 88% | Often <85% |
| Protections | 5 integrated | Basic OCP/OVP only |
| Operating Temp | -20 C to +70 C | 0 C to +60 C typical |
Installation Guide
For optimal performance:
- Mount on standard DIN rail (EN 60715 compliant)
- Maintain 10mm clearance on all sides for ventilation
- Use 18-22 AWG wire for connections
- Torque terminal screws to 0.5 N m
- Verify input voltage matches local standards
Frequently Asked Questions
Q: Can the NDR-75-24 operate in parallel?
A: Yes, up to 3 units can be paralleled for 231W total output (requires current sharing kit).
Q: Is PFC (Power Factor Correction) included?
A: Yes, active PFC (>0.95 at full load) ensures compliance with EN61000-3-2.
Q: What's the warranty period?
A: 5 years from date of manufacture (3 years for electrolytic capacitors).
Where to Buy
Authorized distributors for genuine MEAN WELL products include:
- Digi-Key Electronics
- Mouser Electronics
- Newark Element14
- RS Components
For volume pricing and OEM inquiries, contact MEAN WELL directly at [email protected].
Conclusion
The NDR-75-24 represents MEAN WELL's commitment to industrial power excellence. Its combination of wide input range, high efficiency, and robust construction makes it ideal for mission-critical applications where downtime isn't an option. With global certifications and proven reliability, this power converter delivers peace of mind for system designers and maintenance teams alike.
Upgrade your power infrastructure today - search for NDR-75-24 at major electronic distributors or visit www.meanwell.com for technical documents and design support.