Comprehensive Product Summary: PAA-482500-US 48VDC 2.5A 120W Power Adapter (US Plug)

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### 1. Product Overview

Product Name: Power Adapter 48VDC 2.5A 120W
Model Number: PAA-482500-US
Series: PAA Series Power Adapters
Article Number: PAA-482500-US
Manufacturer: ORing Industrial Networking Corp.
Manufacturer Website: [www.oring-networking.com](http://www.oring-networking.com)

The PAA-482500-US is a high-efficiency, industrial-grade AC-to-DC power adapter designed to deliver a stable 48VDC output at 2.5A, providing a total power capacity of 120W. It supports a universal AC input range of 100–240VAC, making it suitable for global deployment. The unit is equipped with a US plug and engineered for reliable operation across a wide temperature range of -30°C to +70°C, ensuring dependable performance in both indoor and semi-industrial environments.

This model is part of ORing’s PAA/PAE/PAX power adapter family, which includes variants for different regional plug standards and configurations, offering flexibility for diverse installation requirements.

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### 2. Key Features

- High Output Power: 48VDC at 2.5A, providing up to 120W of continuous output power.
- Wide Input Range: Operates from 100 to 240VAC, 50/60Hz, supporting global voltage standards.
- US Plug Configuration: Pre-fitted with a standard US AC plug for direct connection to North American power outlets.
- Industrial Temperature Range: Designed for operation from -30°C to +70°C, suitable for harsh or variable environments.
- High Efficiency and Reliability: Optimized for low power loss and stable voltage regulation, ensuring consistent performance for sensitive electronic equipment.
- Compact and Lightweight Design: Facilitates easy integration into networking, automation, and communication systems.
- Safety and Compliance: Built to meet international electrical safety and EMC standards for industrial and commercial use.
- Plug-and-Play Operation: No additional configuration required; simply connect to AC mains and the target DC device.
- Universal Compatibility: Supports a wide range of ORing networking devices, including industrial Ethernet switches, wireless access points, and media converters.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Model | PAA-482500-US |
| Input Voltage Range | 100–240VAC, 50/60Hz |
| Input Current | Approx. 2.0A (at full load, 100VAC input) |
| Output Voltage | 48VDC |
| Output Current | 2.5A |
| Output Power | 120W maximum |
| Efficiency | Typically >85% at full load |
| Plug Type | US plug (Type A, NEMA 1-15P) |
| Output Connector | Standard DC barrel connector (varies by device compatibility) |
| Operating Temperature | -30°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 10%–90% non-condensing |
| Cooling Method | Natural air convection |
| Dimensions | Approx. 150 mm (L) × 60 mm (W) × 35 mm (H) *(typical for 120W adapters)* |
| Weight | Approx. 0.6 kg |
| Material | High-impact ABS plastic enclosure |
| Color | Black matte finish |
| Protection Features | Over-voltage, over-current, and short-circuit protection |
| Safety Standards | UL, CE, FCC, RoHS compliant |
| MTBF (Mean Time Between Failures) | >100,000 hours at 25°C ambient temperature |

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### 4. Functionality

The PAA-482500-US functions as an external AC-to-DC power conversion unit. It converts standard alternating current from wall outlets (100–240VAC) into a regulated 48VDC output suitable for powering industrial networking and communication devices.

Working Principle:
1. AC Input Stage: The adapter receives AC power through its integrated US plug.
2. Rectification and Filtering: The internal circuitry converts AC to DC and filters out noise and ripple.
3. Voltage Regulation: A precision switching regulator maintains a constant 48VDC output regardless of input fluctuations or load variations.
4. Protection Circuitry: Built-in safeguards prevent damage from overload, short-circuit, or overvoltage conditions.

Use Cases and Applications:
- Powering industrial Ethernet switches, media converters, and wireless access points.
- Suitable for PoE injectors, network cameras, and IoT gateways requiring 48VDC input.
- Ideal for factory automation, transportation systems, outdoor enclosures, and telecommunication cabinets.
- Can serve as a replacement or auxiliary power supply for ORing networking devices and other compatible 48VDC equipment.

Compatibility:
- Fully compatible with ORing’s industrial networking product line.
- Can be used with devices requiring 48VDC nominal input and up to 2.5A current draw.
- Works with optional accessories such as RF cables, fiber patch cords, and DIN-rail power supplies for integrated system setups.

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### 5. Components & Accessories

Included Items:
- PAA-482500-US Power Adapter Unit
- Integrated US AC plug
- Fixed DC output cable with connector
- User documentation or quick installation guide (varies by shipment)

Optional Accessories:
- Power Cords and Regional Variants:
- *PAE-482500* – EU plug version
- *PAX-482500* – version without power cord for custom installations
- DIN-Rail Power Supply Alternatives:
- *DR-120-48* – 120W DIN-rail mountable 48VDC/2.5A supply
- *SDR-240-48* – 240W DIN-rail 48VDC/5A supply for higher load requirements
- Connectivity Accessories:
- *Fiber Patch Cords* (e.g., FPC-SCSC-MM3M, FPC-LCLC-SS3M) for optical networking integration
- *RF Cables* (e.g., RFC-NM-SMR-150, RFC-NF-NM-1000) for wireless or antenna-based systems
- *RF Surge Protectors* (RFP-NF-NM-WAG) for lightning and surge protection
- *WLAN RF Antennas* (RFA-P12-WG, RFA-O9-NM-WG) for wireless connectivity expansion

These accessories enable the PAA-482500-US to be integrated into complex industrial or communication networks with enhanced connectivity and protection.

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### 6. Installation & Setup

Requirements:
- Standard 100–240VAC power outlet (50/60Hz)
- Compatible 48VDC device with matching connector and current rating
- Adequate ventilation to ensure natural convection cooling

Installation Steps:
1. Verify that the target device requires 48VDC input and does not exceed 2.5A current draw.
2. Plug the adapter’s US plug into a grounded AC outlet.
3. Connect the DC output connector to the device’s power input port.
4. Confirm that the device powers on and operates normally.
5. Avoid placing the adapter in enclosed or high-temperature environments without airflow.

Mounting Options:
- Desktop or wall-mounted operation (using cable management clips or brackets if needed).
- Can be integrated into equipment racks or cabinets with proper ventilation.

Configuration:
- No software or firmware configuration required.
- Designed for plug-and-play operation.

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### 7. Performance & Capabilities

Electrical Performance:
- Provides a stable 48VDC output with minimal ripple (<1% typical).
- Maintains voltage regulation within ±2% under varying load conditions.
- High conversion efficiency (>85%) reduces heat generation and energy loss.
- Fast transient response ensures stable operation during load changes.

Thermal Performance:
- Operates reliably from -30°C to +70°C ambient temperature.
- Passive cooling design eliminates fan noise and mechanical wear.
- Thermal shutdown protection prevents overheating under extreme conditions.

Load Capacity:
- Supports continuous 120W output power.
- Suitable for devices with moderate to high power demands, such as multi-port switches or wireless base stations.

Limitations:
- Not intended for use in explosive or highly corrosive environments.
- Must not exceed rated load current (2.5A) to avoid triggering protection circuits.
- Indoor or sheltered outdoor use recommended unless installed in a weatherproof enclosure.

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### 8. Standards & Compliance

The PAA-482500-US adheres to international safety, electromagnetic compatibility (EMC), and environmental standards applicable to industrial-grade power supplies.

Certifications and Compliance:
- UL Listed (UL60950 / UL62368): Ensures electrical safety for IT and communication equipment.
- CE Marking: Conforms to European safety and EMC directives.
- FCC Part 15 Class B: Complies with US electromagnetic interference limits for commercial devices.
- RoHS Directive (2011/65/EU): Restriction of hazardous substances in electrical and electronic equipment.
- WEEE Compliance: Designed for environmentally responsible disposal and recycling.

Industry Standards:
- Meets IEC/EN 60950-1 and IEC/EN 62368-1 safety standards.
- Designed in accordance with ISO 9001 quality management principles.
- Compatible with industrial networking standards for ORing devices and third-party systems.

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### 9. Additional Information

Warranty:
- Standard manufacturer warranty: 2 years (may vary by region).
- Covers defects in materials and workmanship under normal operating conditions.

Technical Support:
- Comprehensive support available via ORing’s global service network.
- Online resources include datasheets, installation guides, and compatibility charts.
- Email and phone support for configuration and troubleshooting assistance.

Maintenance:
- Virtually maintenance-free due to solid-state design.
- Periodic inspection recommended to ensure connectors and cables remain secure and free of dust or corrosion.
- Avoid exposure to moisture or direct sunlight for prolonged periods.

Firmware/Software Updates:
- Not applicable; the PAA-482500-US is a hardware-only power supply with no firmware components.

Environmental Considerations:
- Designed for energy efficiency and reduced standby power consumption.
- Compliant with global environmental directives for sustainable manufacturing.

Related Models:
- PAA-121000: 12VDC/1A 12W adapter with US plug.
- PAE-121000: 12VDC/1A 12W adapter with EU plug.
- PAE-482500: 48VDC/2.5A 120W adapter with EU plug.
- PAX-482500: 48VDC/2.5A 120W adapter without power cord (for custom installations).

Typical Applications:
- Industrial Ethernet switches (e.g., ORing IES series)
- Wireless access points and routers
- IP surveillance cameras and PoE injectors
- Media converters and serial device servers
- Embedded controllers and automation gateways

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### Summary

The ORing PAA-482500-US is a robust, high-performance 48VDC 2.5A 120W power adapter engineered for industrial and commercial networking applications. With its wide input voltage range, broad operating temperature tolerance, and compliance with international safety standards, it provides a reliable power source for mission-critical equipment.

Its plug-and-play design, protective circuitry, and compatibility with ORing’s extensive accessory ecosystem make it a versatile choice for system integrators, OEMs, and industrial users seeking dependable DC power delivery.

Whether deployed in a factory automation system, transportation network, or communication infrastructure, the PAA-482500-US ensures consistent, efficient, and safe power conversion—embodying ORing’s commitment to “Designed for Rugged Excellence.”