Comprehensive Product Summary – DR-120-24 DIN-Rail Power Supply

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### 1. Product Overview

Product Name: DR-120-24
Model Number: DR-120-24
Series: DR Series – Industrial DIN-Rail Power Supplies
Article Number: DR-12024
Manufacturer: ORing Industrial Networking Corp.
Product Type: 120W Industrial DIN-Rail Mounted Power Supply
Input Voltage Range: 100–120VAC / 220–240VAC (selectable by switch)
Output Voltage / Current: 24VDC / 5A
Rated Power Output: 120W

The ORing DR-120-24 is a high-performance, industrial-grade DIN-rail power supply designed to deliver stable 24VDC output power for automation, networking, and control systems. It belongs to ORing’s DR series, which is engineered for rugged industrial environments requiring reliable, efficient, and compact power conversion solutions. The DR-120-24 provides a universal AC input range with selectable voltage operation, ensuring compatibility with global power standards and simplifying deployment across diverse industrial applications.

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### 2. Key Features

- High Power Density: 120W output capacity in a compact DIN-rail form factor, optimized for industrial control cabinets and automation panels.
- Wide Input Range: Supports 100–120VAC and 220–240VAC input voltages, selectable via a front-mounted switch for flexible installation in different regions.
- Stable DC Output: Provides regulated 24VDC output at up to 5A continuous current, suitable for powering PLCs, sensors, controllers, and communication devices.
- Industrial Reliability: Designed for continuous operation in harsh environments, ensuring stable performance under vibration, temperature variation, and electrical noise.
- DIN-Rail Mounting: Standard 35mm DIN-rail mounting for quick installation and easy integration into industrial enclosures.
- Overload and Short-Circuit Protection: Built-in protection circuits safeguard connected equipment from electrical faults.
- High Efficiency: Optimized conversion efficiency reduces heat generation and energy loss, extending component lifespan.
- Compact and Lightweight Design: Facilitates space-saving installation in control panels and distributed power systems.
- Universal Compatibility: Works seamlessly with ORing’s industrial networking devices, including Ethernet switches, media converters, and wireless access points.
- Compliance with Global Standards: Meets international safety and EMC standards for industrial power supplies.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Model Name | DR-120-24 |
| Manufacturer | ORing Industrial Networking Corp. |
| Series | DR Series |
| Article Number | DR-12024 |
| Input Voltage Range | 100–120VAC / 220–240VAC (selectable by switch) |
| Input Frequency | 47–63 Hz |
| Rated Output Voltage | 24VDC |
| Rated Output Current | 5A |
| Rated Output Power | 120W |
| Efficiency | Typically >85% (depending on load and input voltage) |
| Output Voltage Adjustment Range | ±10% (typical, via internal potentiometer) |
| Protection Features | Overload, overvoltage, short-circuit protection |
| Cooling Method | Convection cooling (fanless design) |
| Mounting Type | DIN-Rail (35mm standard rail) |
| Operating Temperature Range | -20°C to +70°C (typical industrial range) |
| Storage Temperature Range | -40°C to +85°C |
| Humidity | 20–90% RH non-condensing |
| Dimensions (W x H x D) | Approx. 125 mm x 100 mm x 50 mm (typical for 120W DIN-rail units) |
| Weight | Approx. 0.8–1.0 kg |
| Material | Metal enclosure with corrosion-resistant coating |
| Cooling | Natural air convection |
| Input Connection | Screw terminal block |
| Output Connection | Screw terminal block |
| Isolation Voltage | 3.0 kVAC input to output |
| MTBF (Mean Time Between Failures) | >200,000 hours at 25°C ambient |
| Safety Standards | UL508, EN60950-1, CE certified |
| EMC Compliance | EN55022 Class B, EN61000-4-2/3/4/5/6/8/11 |

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### 4. Functionality

The DR-120-24 operates as a regulated AC-to-DC converter, transforming alternating current from the mains supply into a stable 24VDC output suitable for powering industrial electronics. The unit’s internal switching regulator ensures high efficiency and low ripple voltage, maintaining consistent output even under fluctuating input conditions.

Typical Use Cases:
- Industrial automation systems (PLCs, sensors, actuators)
- Industrial Ethernet switches and media converters
- Machine control panels and distributed I/O systems
- Building automation and HVAC control
- Security and surveillance systems
- Communication and networking equipment
- Test and measurement instrumentation

Compatibility:
The DR-120-24 is fully compatible with ORing’s industrial networking devices, including:
- Ethernet Switches: Managed and unmanaged DIN-rail switches
- Media Converters: Fiber-to-Ethernet converters
- Wireless Access Points: Industrial WLAN devices
- Serial Device Servers: RS-232/422/485 to Ethernet converters

The power supply’s 24VDC output is a standard voltage for industrial control systems, ensuring interoperability with a wide range of third-party devices and accessories.

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### 5. Components & Accessories

Included Items:
- DR-120-24 Power Supply Unit
- Quick installation guide
- Mounting clip for DIN-rail attachment
- Terminal block connectors for input and output wiring

Optional Accessories (from ORing’s catalog):
- Fiber Patch Cords: For connecting fiber-based networking equipment (e.g., FPC-SCSC-MM3M, FPC-SCLC-SS3M)
- RF Antenna Bases and Cables: For wireless networking devices (e.g., RFB-M2-150, RFC-NM-SMR-1000)
- RF Surge Protectors: For lightning and surge protection (e.g., RFP-NF-NM-WAG)
- WLAN Antennas: Omni-directional and panel types for 2.4GHz and 5.8GHz applications
- M-Series Cables: M12 and M23 connectors for industrial Ethernet and power connections
- Power Adapters: Alternative AC/DC adapters for auxiliary devices (e.g., PAA-121000, PAX-482500)

These accessories complement the DR-120-24 in integrated industrial networking and automation systems, ensuring complete connectivity and power reliability.

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### 6. Installation & Setup

Installation Requirements:
- Standard 35mm DIN-rail mounting (EN50022 compliant)
- Adequate ventilation space (minimum 25mm clearance on all sides)
- Proper grounding connection to reduce electrical noise and ensure safety
- Input wiring rated for the expected current and voltage

Mounting Options:
- Vertical DIN-rail installation inside control cabinets
- Optional wall-mounting using adapter brackets (if required)
- Can be installed in parallel with other DR-series units for distributed power systems

Configuration Steps:
1. Select Input Voltage: Set the input voltage selector switch to match the local AC supply (100–120VAC or 220–240VAC).
2. Mount the Unit: Snap the DR-120-24 onto the DIN-rail and ensure it is securely locked.
3. Connect Input Power: Wire the AC input terminals (L, N, and ground).
4. Connect Output Load: Wire the 24VDC output terminals to the load device(s).
5. Verify Polarity: Ensure correct polarity to prevent damage to connected equipment.
6. Power On: Apply AC power and verify the output voltage using a multimeter.

Safety Notes:
- Disconnect power before wiring or maintenance.
- Use appropriate fuses or circuit breakers on the input side.
- Ensure ambient temperature does not exceed rated limits.

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### 7. Performance & Capabilities

Power Output:
Delivers a continuous 24VDC at 5A, providing a total output power of 120W. The unit maintains voltage regulation within ±1% under varying load conditions.

Efficiency:
High conversion efficiency (>85%) minimizes energy loss and heat generation, improving reliability and reducing cooling requirements.

Load Regulation:
Excellent load regulation ensures stable output voltage even with dynamic load changes, critical for sensitive electronic equipment.

Ripple & Noise:
Low output ripple (<100mVp-p typical) ensures clean DC power for communication and control circuits.

Protection Mechanisms:
- Overload Protection: Automatically limits output current to prevent damage during overload conditions.
- Short-Circuit Protection: Shuts down output in case of short circuit; auto-recovers after fault removal.
- Overvoltage Protection: Prevents excessive output voltage that could harm connected devices.

Thermal Performance:
Fanless convection cooling design ensures silent operation and high reliability. The metal housing aids heat dissipation, allowing continuous operation in ambient temperatures up to 70°C.

Limitations:
- Not suitable for direct outdoor installation without enclosure protection.
- Input voltage must be manually selected; automatic switching is not supported.
- Derating may apply at high ambient temperatures or when mounted in confined spaces.

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### 8. Standards & Compliance

The DR-120-24 meets international safety and electromagnetic compatibility (EMC) standards, ensuring safe and reliable operation in industrial environments.

Safety Certifications:
- UL508 (Industrial Control Equipment)
- EN60950-1 (Information Technology Equipment Safety)
- CE Marking (European Conformity)

EMC Compliance:
- EN55022 Class B (Conducted and Radiated Emissions)
- EN61000-4-2 (Electrostatic Discharge Immunity)
- EN61000-4-3 (Radiated RF Immunity)
- EN61000-4-4 (Electrical Fast Transient/Burst Immunity)
- EN61000-4-5 (Surge Immunity)
- EN61000-4-6 (Conducted RF Immunity)
- EN61000-4-8 (Power Frequency Magnetic Field Immunity)
- EN61000-4-11 (Voltage Dips and Interruptions)

Environmental Compliance:
- RoHS Compliant (Restriction of Hazardous Substances)
- WEEE Directive (Waste Electrical and Electronic Equipment)

These certifications confirm that the DR-120-24 adheres to stringent industrial and environmental standards, making it suitable for global deployment in regulated industries.

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### 9. Additional Information

Warranty:
Typically covered by a 2- to 3-year manufacturer’s warranty against defects in materials and workmanship under normal operating conditions.

Technical Support:
ORing provides comprehensive technical support, including installation guidance, troubleshooting assistance, and firmware or documentation updates via its official website (www.oring-networking.com).

Maintenance:
- Periodic inspection of terminal connections for tightness and corrosion.
- Ensure adequate ventilation and dust-free operation.
- No internal user-serviceable parts; contact authorized service centers for repairs.

Product Lifecycle & Updates:
The DR-120-24 is part of ORing’s long-term industrial product line, ensuring availability for extended project lifecycles. Firmware or design updates are communicated through official product bulletins.

Related Models in the DR Series:
- DR-120-12: 120W, 12VDC / 10A output
- DR-120-48: 120W, 48VDC / 2.5A output
- DR-75-24: 75W, 24VDC / 3.2A output
- DR-45-24: 45W, 24VDC / 2A output

These models share similar mechanical design and installation methods, allowing easy interchangeability across different voltage requirements.

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### Summary

The ORing DR-120-24 is a robust, efficient, and versatile 120W DIN-rail power supply engineered for industrial automation and networking applications. With its 24VDC / 5A regulated output, universal AC input, and rugged construction, it provides reliable power delivery in demanding environments. Its compliance with international safety and EMC standards, combined with ORing’s reputation for industrial-grade reliability, makes it an ideal choice for powering mission-critical systems in manufacturing, transportation, energy, and communication sectors.

The DR-120-24 exemplifies ORing’s design philosophy of “Rugged Excellence”, offering a dependable power foundation for modern industrial networks and control infrastructures.