# Power Supply Unit Black Box SDR-120-48 120W Blue Stainless Steel

**URL:** https://aio.lv/en/product--black-box-sdr-120-48--10992573
**Data updated:** 2025-12-30 15:02 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** black box
**Manufacturer code:** SDR-120-48
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Black Box SDR-120-48 is a reliable power supply unit with a total power of 120W. It features a wide AC input voltage range of 85-264V and operates at a frequency of 47-63Hz. The unit is designed in blue stainless steel, ensuring durability and aesthetic appeal. It has a compact size with dimensions of 40mm width, 113mm depth, and 125mm height, making it suitable for various applications. Certified with cUL and CE for safety and compliance.

## Long description

The Black Box SDR-120-48 is a 120W power supply unit in a blue stainless steel enclosure. It provides a regulated 48 VDC output and accepts a wide AC input voltage range of 85–264 VAC at 47–63 Hz. The compact unit (40 mm × 113 mm × 125 mm) includes finger-safe terminals, an LED that indicates DC output presence, and is certified to cUL and CE safety standards.
Advantages
The unit supports a wide universal AC input and can also accept 120–370 VDC input (not certified for DC), operates over an extended temperature range of -4 to +158 °F, and offers built-in protection against short circuits, overload and over-voltage. Its stainless steel housing provides mechanical durability and a compact footprint for space-constrained installations.
Suitable for
Industrial control cabinets and automation equipment
Network and telecommunications devices requiring 48 VDC
Embedded systems and instrumentation with limited mounting space
Key specifications
Model: SDR-120-48 (Black Box)
Rated output power: 120 W
Output voltage: 48 VDC (regulated)
Input voltage: 85–264 VAC, 47–63 Hz (also accepts 120–370 VDC, not certified)
Operating temperature range: -4 to +158 °F
Dimensions (W×D×H): 40 mm × 113 mm × 125 mm
Safety approvals: cUL, CE
Features: LED indicates DC power, finger-safe terminals, protections for short circuit, overload, over-voltage
How to use
Mount the SDR-120-48 in a suitable enclosure or on a DIN rail as allowed by your installation guidelines, connect the AC input to the 85–264 VAC supply (observe correct wiring and grounding), and connect the 48 VDC load to the output terminals. Verify the LED indicator for DC presence. Follow local electrical codes and the device’s installation instructions when making connections.
Usage recommendations
Install the unit in a well-ventilated location, avoid exposure to temperatures outside the specified range, ensure proper fusing on the input side, and use the unit within its rated power to maintain compliance with cUL and CE approvals. If using DC input (120–370 VDC), confirm suitability with your safety authority since that mode is not certified.

## Specifications

### Power

| Feature | Value |
|---|---|
| Total power | 120 W |
| Efficiency | 90.5 % |
| Hold time | 50 ms |
| Input current | 1.4 |
| AC input frequency | 47 - 63 |
| AC input voltage | 85 - 264 |

### Design

| Feature | Value |
|---|---|
| Product colour | Stainless steel, Blue |

### Certificates

| Feature | Value |
|---|---|
| Certification | cUL, CE |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.7 kg |
| Height | 125 mm |
| Width | 40 mm |
| Depth | 113 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating relative humidity (H-H) | 20 - 90 |
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | -25 - 70 |
| Storage relative humidity (H-H) | 10 - 95 |
| Operating temperature (T-T) | -13 - 158 |

### Other features

| Feature | Value |
|---|---|
| Voltage tolerance | 1 % |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All black box products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized black box service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: total power, efficiency, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/10992573/64480343_large.webp