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- Universal AC Input: Operates from 100 to 240 VAC without manual switching, ensuring compatibility with global power standards.
- High Output Stability: Provides a regulated 48 VDC output at 1.6 A, suitable for powering industrial Ethernet switches, controllers, and communication devices.
- Compact DIN-Rail Design: Optimized for installation in control cabinets and industrial enclosures, saving space and simplifying wiring.
- High Efficiency and Reliability: Designed for continuous operation in demanding environments, with low power loss and high conversion efficiency.
- Protection Features: Typically includes overload, overvoltage, and short-circuit protection to safeguard connected equipment.
- Industrial Durability: Built to withstand vibration, temperature variation, and electrical noise common in industrial settings.
- Plug-and-Play Integration: Compatible with ORing’s industrial networking devices, including Ethernet switches, media converters, and wireless access points.
- Maintenance-Free Operation: Fanless convection cooling design minimizes dust ingress and mechanical wear.
- Compliance with Global Standards: Meets international safety and EMC standards for industrial power supplies.
- High Output Stability: Provides a regulated 48 VDC output at 1.6 A, suitable for powering industrial Ethernet switches, controllers, and communication devices.
- Compact DIN-Rail Design: Optimized for installation in control cabinets and industrial enclosures, saving space and simplifying wiring.
- High Efficiency and Reliability: Designed for continuous operation in demanding environments, with low power loss and high conversion efficiency.
- Protection Features: Typically includes overload, overvoltage, and short-circuit protection to safeguard connected equipment.
- Industrial Durability: Built to withstand vibration, temperature variation, and electrical noise common in industrial settings.
- Plug-and-Play Integration: Compatible with ORing’s industrial networking devices, including Ethernet switches, media converters, and wireless access points.
- Maintenance-Free Operation: Fanless convection cooling design minimizes dust ingress and mechanical wear.
- Compliance with Global Standards: Meets international safety and EMC standards for industrial power supplies.
Comprehensive Product Summary – DR-7548 DIN-Rail Power Supply
### 1. Product Overview
Product Name: DR-7548
Model Number: DR-75-48
Series: DR Series DIN-Rail Power Supplies
Article Number: DR-7548
Manufacturer: ORing Industrial Networking Corp.
Product Type: Industrial-grade DIN-Rail mounted AC/DC power supply
Output Rating: 75 W, 48 VDC, 1.6 A
Input Range: 100–240 VAC (universal input)
The ORing DR-7548 is a compact, high-efficiency 75-watt DIN-Rail power supply designed for industrial automation, networking, and control system applications. It provides a regulated 48 VDC output at 1.6 A and supports a wide AC input range from 100 to 240 VAC, making it suitable for global deployment. The unit is part of ORing’s DR series, which includes a range of DIN-Rail power supplies from 45 W to 120 W, all engineered for rugged industrial environments and reliable long-term operation.
### 2. Key Features
- Universal AC Input: Operates from 100 to 240 VAC without manual switching, ensuring compatibility with global power standards.
- High Output Stability: Provides a regulated 48 VDC output at 1.6 A, suitable for powering industrial Ethernet switches, controllers, and communication devices.
- Compact DIN-Rail Design: Optimized for installation in control cabinets and industrial enclosures, saving space and simplifying wiring.
- High Efficiency and Reliability: Designed for continuous operation in demanding environments, with low power loss and high conversion efficiency.
- Protection Features: Typically includes overload, overvoltage, and short-circuit protection to safeguard connected equipment.
- Industrial Durability: Built to withstand vibration, temperature variation, and electrical noise common in industrial settings.
- Plug-and-Play Integration: Compatible with ORing’s industrial networking devices, including Ethernet switches, media converters, and wireless access points.
- Maintenance-Free Operation: Fanless convection cooling design minimizes dust ingress and mechanical wear.
- Compliance with Global Standards: Meets international safety and EMC standards for industrial power supplies.
### 3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| Model Name | DR-75-48 |
| Output Power | 75 W |
| Output Voltage | 48 VDC |
| Output Current | 1.6 A |
| Input Voltage Range | 100–240 VAC (universal input) |
| Input Frequency | 47–63 Hz |
| Efficiency | Typically >85% (depending on load and input voltage) |
| Mounting Type | DIN-Rail (standard 35 mm rail) |
| Cooling Method | Natural air convection (fanless) |
| Operating Temperature | Typically -20°C to +70°C (derating may apply at higher temperatures) |
| Storage Temperature | -40°C to +85°C |
| Humidity | 20–90% RH non-condensing |
| Protection | Overload, overvoltage, short-circuit protection |
| Isolation Voltage | Input to output isolation typically 3 kVAC |
| Dimensions | Approx. 125 mm (H) × 50 mm (W) × 100 mm (D) (typical for 75W DIN models) |
| Weight | Approx. 0.6–0.8 kg |
| Material | Metal enclosure with corrosion-resistant coating |
| Mounting Orientation | Vertical on DIN-Rail |
| Cooling Clearance | Minimum 25 mm top/bottom clearance recommended |
### 4. Functionality
The DR-7548 functions as a regulated AC/DC converter that transforms standard AC mains input (100–240 VAC) into a stable 48 VDC output suitable for powering industrial electronics. The unit is designed for direct DIN-Rail mounting, allowing quick integration into control panels or network enclosures.
Typical Use Cases:
- Powering industrial Ethernet switches, routers, and media converters.
- Supplying voltage to programmable logic controllers (PLCs) and I/O modules.
- Providing DC power for wireless access points, sensors, and automation controllers.
- Supporting industrial communication systems, including Modbus, PROFINET, and Ethernet/IP devices.
- Integration into distributed control systems (DCS) and SCADA environments.
Compatibility:
- Fully compatible with ORing’s industrial networking products such as managed/unmanaged switches, wireless APs, and serial device servers.
- Can be used with other 48 VDC devices requiring stable DC input.
- Supports connection with ORing’s accessory cables and connectors for streamlined installation.
### 5. Components & Accessories
Included Items:
- DR-7548 Power Supply Unit
- Quick installation guide or datasheet
- Terminal block connectors for input and output wiring
Optional Accessories (from ORing product ecosystem):
- Fiber Patch Cords: For connecting optical transceivers (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).
- Power Adapters: Alternative AC/DC adapters (e.g., PAA-121000, PAX-482500).
- RF Surge Protectors: For lightning and surge protection in wireless systems (e.g., RFP-NF-NM-WAG).
- M-Series Cables: Industrial-grade Ethernet and power cables with M12/M23 connectors for rugged environments.
These accessories enhance system integration and ensure compatibility across ORing’s industrial networking portfolio.
### 6. Installation & Setup
Installation Requirements:
- Standard 35 mm DIN-Rail mounting system.
- Adequate ventilation space (minimum 25 mm clearance above and below).
- Proper grounding to ensure electrical safety and minimize EMI.
- Input wiring with appropriate gauge and insulation rating for 100–240 VAC.
- Output wiring rated for 48 VDC and current up to 1.6 A.
Mounting Procedure:
1. Snap the DR-7548 onto the DIN-Rail by engaging the rear clip.
2. Connect the AC input lines (L, N) and protective earth (PE) to the input terminals.
3. Connect the DC output terminals (+V, -V) to the load.
4. Verify polarity and ensure secure terminal connections.
5. Power on and confirm output voltage using a multimeter before connecting sensitive equipment.
Configuration:
- The DR-7548 is a fixed-output model; no user configuration is required.
- Some models may include a small potentiometer for fine-tuning output voltage (±10%).
- LED indicators (if present) show power status and fault conditions.
### 7. Performance & Capabilities
Electrical Performance:
- Output Regulation: Maintains stable 48 VDC output under varying load and input conditions.
- Ripple & Noise: Typically <100 mVp-p at full load.
- Transient Response: Fast recovery from load changes, ensuring stable operation of connected devices.
- Hold-up Time: Typically >20 ms at full load and nominal input voltage.
- Overload Protection: Automatically limits output current to prevent damage.
- Overvoltage Protection: Shuts down or clamps output if voltage exceeds safe limits.
- Short-Circuit Protection: Automatic recovery after fault removal.
Efficiency & Thermal Management:
- High conversion efficiency (>85%) reduces heat generation.
- Fanless design ensures silent operation and long service life.
- Convection cooling allows continuous operation in ambient temperatures up to 70°C (with derating).
Reliability:
- Mean Time Between Failures (MTBF): Typically >200,000 hours at 25°C ambient.
- Designed for 24/7 operation in industrial environments.
- Resistant to electrical noise, vibration, and transient surges.
Limitations:
- Fixed output voltage (48 VDC) – not adjustable for other voltage levels.
- Derating required at high ambient temperatures or limited airflow.
- Not intended for outdoor use without enclosure protection.
### 8. Standards & Compliance
The DR-7548 adheres to international standards for industrial power supplies, ensuring safety, electromagnetic compatibility, and performance reliability.
Safety Standards:
- IEC/EN 60950-1 or IEC/EN 62368-1 (Information Technology Equipment Safety)
- UL 508 (Industrial Control Equipment)
- CE Low Voltage Directive (LVD) compliance
EMC Standards:
- EN 55022 / CISPR 22 Class B (EMI Emission)
- EN 61000-6-2 (EMC Immunity for Industrial Environments)
- EN 61000-4-2 (ESD Immunity)
- EN 61000-4-3 (Radiated RF Immunity)
- EN 61000-4-4 (EFT/Burst Immunity)
- EN 61000-4-5 (Surge Immunity)
- EN 61000-4-6 (Conducted RF Immunity)
- EN 61000-4-8 (Magnetic Field Immunity)
Environmental Compliance:
- RoHS Directive 2011/65/EU compliant (Restriction of Hazardous Substances)
- WEEE Directive 2012/19/EU compliant (Waste Electrical and Electronic Equipment)
Certifications (typical for DR series):
- CE Marking
- UL Recognized Component
- CB Scheme Certification
These certifications confirm that the DR-7548 meets stringent industrial and safety requirements for global markets.
### 9. Additional Information
Warranty:
Typically covered by a 2- to 3-year limited manufacturer’s warranty against defects in materials and workmanship under normal operating conditions.
Technical Support:
ORing provides comprehensive technical support, including installation guidance, troubleshooting, and product documentation. Support resources are available through the official website (www.oring-networking.com) and authorized distributors.
Maintenance:
- The DR-7548 is maintenance-free under normal operation.
- Periodic inspection of terminal connections and ventilation clearance is recommended.
- Ensure the unit remains free from dust accumulation and moisture ingress.
Firmware/Software Updates:
Not applicable – the DR-7548 is a hardware-only power supply with no firmware components.
Service Life Expectancy:
Designed for long-term industrial use, with an expected operational lifespan exceeding 10 years under nominal conditions.
Environmental Considerations:
- Operates reliably in industrial environments with high electrical noise.
- Suitable for use in control cabinets, machinery enclosures, and network racks.
- Should be installed in a dry, ventilated area to ensure optimal thermal performance.
Related Models in the DR Series:
- DR-4512: 45W, 12VDC/3.5A
- DR-4524: 45W, 24VDC/2A
- DR-75-12: 75W, 12VDC/6.3A
- DR-75-24: 75W, 24VDC/3.2A
- DR-120-12: 120W, 12VDC/10A
- DR-120-24: 120W, 24VDC/5A
- DR-120-48: 120W, 48VDC/2.5A
These models share the same mechanical design and installation method, differing only in output voltage and power capacity.
### Summary
The ORing DR-7548 (DR-75-48) is a robust, high-performance 75W DIN-Rail power supply delivering 48VDC at 1.6A from a universal 100–240VAC input. Engineered for industrial automation and networking applications, it combines compact design, high efficiency, and comprehensive protection features. Its universal input range, fanless cooling, and compliance with international safety and EMC standards make it a reliable choice for powering industrial Ethernet switches, controllers, and communication devices.
With its rugged construction, ease of installation, and compatibility with ORing’s extensive range of industrial networking accessories, the DR-7548 provides a dependable power foundation for mission-critical systems operating in harsh industrial environments.
Manufacturer Website: [www.oring-networking.com](http://www.oring-networking.com)
Tagline: *Designed for Rugged Excellence*
### 1. Product Overview
Product Name: DR-7548
Model Number: DR-75-48
Series: DR Series DIN-Rail Power Supplies
Article Number: DR-7548
Manufacturer: ORing Industrial Networking Corp.
Product Type: Industrial-grade DIN-Rail mounted AC/DC power supply
Output Rating: 75 W, 48 VDC, 1.6 A
Input Range: 100–240 VAC (universal input)
The ORing DR-7548 is a compact, high-efficiency 75-watt DIN-Rail power supply designed for industrial automation, networking, and control system applications. It provides a regulated 48 VDC output at 1.6 A and supports a wide AC input range from 100 to 240 VAC, making it suitable for global deployment. The unit is part of ORing’s DR series, which includes a range of DIN-Rail power supplies from 45 W to 120 W, all engineered for rugged industrial environments and reliable long-term operation.
### 2. Key Features
- Universal AC Input: Operates from 100 to 240 VAC without manual switching, ensuring compatibility with global power standards.
- High Output Stability: Provides a regulated 48 VDC output at 1.6 A, suitable for powering industrial Ethernet switches, controllers, and communication devices.
- Compact DIN-Rail Design: Optimized for installation in control cabinets and industrial enclosures, saving space and simplifying wiring.
- High Efficiency and Reliability: Designed for continuous operation in demanding environments, with low power loss and high conversion efficiency.
- Protection Features: Typically includes overload, overvoltage, and short-circuit protection to safeguard connected equipment.
- Industrial Durability: Built to withstand vibration, temperature variation, and electrical noise common in industrial settings.
- Plug-and-Play Integration: Compatible with ORing’s industrial networking devices, including Ethernet switches, media converters, and wireless access points.
- Maintenance-Free Operation: Fanless convection cooling design minimizes dust ingress and mechanical wear.
- Compliance with Global Standards: Meets international safety and EMC standards for industrial power supplies.
### 3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| Model Name | DR-75-48 |
| Output Power | 75 W |
| Output Voltage | 48 VDC |
| Output Current | 1.6 A |
| Input Voltage Range | 100–240 VAC (universal input) |
| Input Frequency | 47–63 Hz |
| Efficiency | Typically >85% (depending on load and input voltage) |
| Mounting Type | DIN-Rail (standard 35 mm rail) |
| Cooling Method | Natural air convection (fanless) |
| Operating Temperature | Typically -20°C to +70°C (derating may apply at higher temperatures) |
| Storage Temperature | -40°C to +85°C |
| Humidity | 20–90% RH non-condensing |
| Protection | Overload, overvoltage, short-circuit protection |
| Isolation Voltage | Input to output isolation typically 3 kVAC |
| Dimensions | Approx. 125 mm (H) × 50 mm (W) × 100 mm (D) (typical for 75W DIN models) |
| Weight | Approx. 0.6–0.8 kg |
| Material | Metal enclosure with corrosion-resistant coating |
| Mounting Orientation | Vertical on DIN-Rail |
| Cooling Clearance | Minimum 25 mm top/bottom clearance recommended |
### 4. Functionality
The DR-7548 functions as a regulated AC/DC converter that transforms standard AC mains input (100–240 VAC) into a stable 48 VDC output suitable for powering industrial electronics. The unit is designed for direct DIN-Rail mounting, allowing quick integration into control panels or network enclosures.
Typical Use Cases:
- Powering industrial Ethernet switches, routers, and media converters.
- Supplying voltage to programmable logic controllers (PLCs) and I/O modules.
- Providing DC power for wireless access points, sensors, and automation controllers.
- Supporting industrial communication systems, including Modbus, PROFINET, and Ethernet/IP devices.
- Integration into distributed control systems (DCS) and SCADA environments.
Compatibility:
- Fully compatible with ORing’s industrial networking products such as managed/unmanaged switches, wireless APs, and serial device servers.
- Can be used with other 48 VDC devices requiring stable DC input.
- Supports connection with ORing’s accessory cables and connectors for streamlined installation.
### 5. Components & Accessories
Included Items:
- DR-7548 Power Supply Unit
- Quick installation guide or datasheet
- Terminal block connectors for input and output wiring
Optional Accessories (from ORing product ecosystem):
- Fiber Patch Cords: For connecting optical transceivers (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).
- Power Adapters: Alternative AC/DC adapters (e.g., PAA-121000, PAX-482500).
- RF Surge Protectors: For lightning and surge protection in wireless systems (e.g., RFP-NF-NM-WAG).
- M-Series Cables: Industrial-grade Ethernet and power cables with M12/M23 connectors for rugged environments.
These accessories enhance system integration and ensure compatibility across ORing’s industrial networking portfolio.
### 6. Installation & Setup
Installation Requirements:
- Standard 35 mm DIN-Rail mounting system.
- Adequate ventilation space (minimum 25 mm clearance above and below).
- Proper grounding to ensure electrical safety and minimize EMI.
- Input wiring with appropriate gauge and insulation rating for 100–240 VAC.
- Output wiring rated for 48 VDC and current up to 1.6 A.
Mounting Procedure:
1. Snap the DR-7548 onto the DIN-Rail by engaging the rear clip.
2. Connect the AC input lines (L, N) and protective earth (PE) to the input terminals.
3. Connect the DC output terminals (+V, -V) to the load.
4. Verify polarity and ensure secure terminal connections.
5. Power on and confirm output voltage using a multimeter before connecting sensitive equipment.
Configuration:
- The DR-7548 is a fixed-output model; no user configuration is required.
- Some models may include a small potentiometer for fine-tuning output voltage (±10%).
- LED indicators (if present) show power status and fault conditions.
### 7. Performance & Capabilities
Electrical Performance:
- Output Regulation: Maintains stable 48 VDC output under varying load and input conditions.
- Ripple & Noise: Typically <100 mVp-p at full load.
- Transient Response: Fast recovery from load changes, ensuring stable operation of connected devices.
- Hold-up Time: Typically >20 ms at full load and nominal input voltage.
- Overload Protection: Automatically limits output current to prevent damage.
- Overvoltage Protection: Shuts down or clamps output if voltage exceeds safe limits.
- Short-Circuit Protection: Automatic recovery after fault removal.
Efficiency & Thermal Management:
- High conversion efficiency (>85%) reduces heat generation.
- Fanless design ensures silent operation and long service life.
- Convection cooling allows continuous operation in ambient temperatures up to 70°C (with derating).
Reliability:
- Mean Time Between Failures (MTBF): Typically >200,000 hours at 25°C ambient.
- Designed for 24/7 operation in industrial environments.
- Resistant to electrical noise, vibration, and transient surges.
Limitations:
- Fixed output voltage (48 VDC) – not adjustable for other voltage levels.
- Derating required at high ambient temperatures or limited airflow.
- Not intended for outdoor use without enclosure protection.
### 8. Standards & Compliance
The DR-7548 adheres to international standards for industrial power supplies, ensuring safety, electromagnetic compatibility, and performance reliability.
Safety Standards:
- IEC/EN 60950-1 or IEC/EN 62368-1 (Information Technology Equipment Safety)
- UL 508 (Industrial Control Equipment)
- CE Low Voltage Directive (LVD) compliance
EMC Standards:
- EN 55022 / CISPR 22 Class B (EMI Emission)
- EN 61000-6-2 (EMC Immunity for Industrial Environments)
- EN 61000-4-2 (ESD Immunity)
- EN 61000-4-3 (Radiated RF Immunity)
- EN 61000-4-4 (EFT/Burst Immunity)
- EN 61000-4-5 (Surge Immunity)
- EN 61000-4-6 (Conducted RF Immunity)
- EN 61000-4-8 (Magnetic Field Immunity)
Environmental Compliance:
- RoHS Directive 2011/65/EU compliant (Restriction of Hazardous Substances)
- WEEE Directive 2012/19/EU compliant (Waste Electrical and Electronic Equipment)
Certifications (typical for DR series):
- CE Marking
- UL Recognized Component
- CB Scheme Certification
These certifications confirm that the DR-7548 meets stringent industrial and safety requirements for global markets.
### 9. Additional Information
Warranty:
Typically covered by a 2- to 3-year limited manufacturer’s warranty against defects in materials and workmanship under normal operating conditions.
Technical Support:
ORing provides comprehensive technical support, including installation guidance, troubleshooting, and product documentation. Support resources are available through the official website (www.oring-networking.com) and authorized distributors.
Maintenance:
- The DR-7548 is maintenance-free under normal operation.
- Periodic inspection of terminal connections and ventilation clearance is recommended.
- Ensure the unit remains free from dust accumulation and moisture ingress.
Firmware/Software Updates:
Not applicable – the DR-7548 is a hardware-only power supply with no firmware components.
Service Life Expectancy:
Designed for long-term industrial use, with an expected operational lifespan exceeding 10 years under nominal conditions.
Environmental Considerations:
- Operates reliably in industrial environments with high electrical noise.
- Suitable for use in control cabinets, machinery enclosures, and network racks.
- Should be installed in a dry, ventilated area to ensure optimal thermal performance.
Related Models in the DR Series:
- DR-4512: 45W, 12VDC/3.5A
- DR-4524: 45W, 24VDC/2A
- DR-75-12: 75W, 12VDC/6.3A
- DR-75-24: 75W, 24VDC/3.2A
- DR-120-12: 120W, 12VDC/10A
- DR-120-24: 120W, 24VDC/5A
- DR-120-48: 120W, 48VDC/2.5A
These models share the same mechanical design and installation method, differing only in output voltage and power capacity.
### Summary
The ORing DR-7548 (DR-75-48) is a robust, high-performance 75W DIN-Rail power supply delivering 48VDC at 1.6A from a universal 100–240VAC input. Engineered for industrial automation and networking applications, it combines compact design, high efficiency, and comprehensive protection features. Its universal input range, fanless cooling, and compliance with international safety and EMC standards make it a reliable choice for powering industrial Ethernet switches, controllers, and communication devices.
With its rugged construction, ease of installation, and compatibility with ORing’s extensive range of industrial networking accessories, the DR-7548 provides a dependable power foundation for mission-critical systems operating in harsh industrial environments.
Manufacturer Website: [www.oring-networking.com](http://www.oring-networking.com)
Tagline: *Designed for Rugged Excellence*
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