Advantech PSD-A120W48 120W 48V DIN-Rail Power Supply
The Advantech PSD-A120W48 is a compact DIN-rail power supply designed to provide regulated 48 VDC power for industrial automation, embedded computing, communication, and control-panel applications. It delivers 120 W at a rated current of 2.5 A and supports a short-duration power boost for equipment with temporary start-up demand. Emaconn can assist international buyers with current pricing, product availability, delivery estimates, and technical product selection.
Power Capacity for 48 VDC Industrial Loads
The PSD-A120W48 provides a nominal output of 48 VDC at 2.5 A. Its voltage can be adjusted between 48 and 55 VDC, allowing engineers to compensate for distribution losses or meet the permitted input range of compatible equipment.
The power supply can deliver up to 3.75 A for approximately three seconds. This 150% peak-load capacity can be useful when connected equipment produces a brief current surge during start-up. Continuous consumption must remain within the rated 120 W output, and a suitable engineering margin should be included when calculating the total load.
Advantech PSD-A120W48 Technical Characteristics
- Nominal output voltage: 48 VDC
- Rated output current: 2.5 A
- Rated output power: 120 W
- Output adjustment range: 48 to 55 VDC
- Peak current: 3.75 A for up to three seconds
- Input range: 85 to 264 VAC or 110 to 375 VDC
- Input frequency: 47 to 63 Hz
- Typical efficiency: 91%
- Dimensions: 40 × 120 × 110 mm
- Mounting method: TS35 DIN rail
The compact 40 mm housing width allows the unit to be incorporated into control cabinets where DIN-rail capacity must be used efficiently. Screw terminals support conventional industrial wiring, while natural-convection cooling removes the need for an internal fan.
Monitoring and Protective Functions
A DC OK relay contact can help control systems monitor the output condition. This function may be incorporated into maintenance alarms, controller inputs, or equipment supervision circuits, subject to the relay-contact rating and the overall electrical design.
The unit includes overvoltage, overcurrent, short-circuit, and overtemperature protection. These internal functions provide an additional layer of protection during abnormal conditions. They do not replace correctly selected upstream circuit protection, protective grounding, or appropriate conductor sizing.
Thermal and Environmental Considerations
The specified operating-temperature range extends from -25°C to 70°C. Full rated output is available up to 60°C under the documented input conditions. Above this temperature, the available output must be derated by 2.5% per degree Celsius.
Cabinet designers should consider internal enclosure temperature, ventilation, component spacing, mounting orientation, and nearby heat-generating equipment. Input derating may also apply at lower supply voltages, so the applicable derating curves should be reviewed during system engineering.
Application and Compatibility Assessment
The PSD-A120W48 can be evaluated for 48 VDC industrial computers, communication systems, remote I/O stations, control equipment, monitoring devices, and other compatible automation loads. It may also be suitable for maintenance replacement where the installed system requires the same electrical and mechanical characteristics.
Before ordering, verify the continuous current, start-up demand, acceptable voltage range, input conditions, terminal arrangement, available rail space, operating temperature, required approvals, and DC OK monitoring requirements. A product should not be approved solely because it has the same nominal voltage and wattage.
Procurement Support from Emaconn
Emaconn can support quotation requests, stock-status checks, lead-time evaluation, international sourcing, and project-based procurement for the Advantech PSD-A120W48. Buyers should provide the exact part number, required quantity, delivery country, and requested schedule when requesting commercial information.
If the original product is unavailable, Emaconn can assist with alternative-model evaluation. Any proposed replacement should be reviewed for output rating, input range, peak-load capability, dimensions, terminal configuration, monitoring contact, environmental limits, and applicable certifications. Related Advantech industrial automation products can also be reviewed for consolidated project requirements.
Advantech PSD-A120W48 Frequently Asked Questions
What is the rated output of the PSD-A120W48?
It provides 48 VDC at 2.5 A, corresponding to a rated output of 120 W.
Can its output voltage be adjusted?
Yes. The documented adjustment range is 48 to 55 VDC.
How much peak current can it deliver?
It can provide up to 3.75 A for approximately three seconds.
Does it support AC and DC input?
Yes. It accepts 85 to 264 VAC or 110 to 375 VDC input.
Does the unit provide an output-status contact?
Yes. It includes a DC OK relay contact that can be used for suitable monitoring circuits.
How is the PSD-A120W48 mounted?
It mounts on a standard TS35 DIN rail in accordance with EN 60715.
When is thermal derating required?
Output derating is required above 60°C, subject to the documented operating conditions.
How can current pricing be requested?
Contact Emaconn with the part number, quantity, destination country, and required delivery date.
Can Emaconn assist with bulk procurement?
Yes. Emaconn can evaluate volume requirements, estimated availability, and project-specific delivery conditions.
Can an alternative 48 VDC supply be used?
An alternative may be considered only after its electrical ratings, dimensions, protection, monitoring, mounting, and approvals have been verified.