DC1248UK - Câbles pour ordinateurs et périphériques Mercury - Free user manual and instructions

Product Type	13.8Vdc Switch Mode Power Supply
Brand	Mercury
Model Series	DC1248UK
Output Voltage	13.8Vdc (adjustable 12.42V-15.18V)
Output Current (Options)	3.6A, 5.4A, 15A, 25A, 30A, 43.5A
Max Power (Options)	49.68W, 74.52W, 207W, 345W, 414W, 600.3W
Input Voltage	240Vac, 50Hz
IP Rating	IP20
Protection Features	Short circuit, Overload, Auto reset
Cooling	Fan cooling for higher power models (≥15A)
Number of Outputs	1, 2, or 3 depending on model
Terminal Type	Screw terminals
Voltage Adjustment	Yes, via potentiometer marked “+V ADJ”
LED Indicator	Green LED for power on
Operating Temperature	-10°C to 40°C (full load); derated above 40°C
Dimensions (Smallest Model)	110 x 35 x 80 mm
Weight (Smallest Model)	0.22 kg
Safety Certification	CE, UKCA
Usage	Indoor use only
Installation	By professional electrician only

Frequently Asked Questions - DC1248UK Mercury

What is the input voltage for the Mercury DC1248UK power supply?

The input voltage is 240Vac at 50Hz. Always ensure the mains supply matches this specification.

Can I adjust the output voltage?

Yes, the output voltage can be adjusted via the potentiometer marked +V ADJ. The adjustment range is 10% (12.42V to 15.18V). Use a small screwdriver to turn the potentiometer.

What protection features does this power supply have?

It includes short circuit protection, overload protection, and auto reset after a fault is cleared.

How many DC outputs are available?

Depending on the specific model (e.g., 650.755UK, 650.761UK), the number of outputs ranges from 1 to 3. Higher power models have multiple outputs for easier wiring of multiple devices.

Is this power supply suitable for outdoor use?

No, it is rated IP20 and designed for indoor use only. Do not expose to moisture, dust, or extreme temperatures.

What is the maximum operating temperature?

Full load operating temperature is -10°C to 40°C. Above 40°C, output power derates; at 70°C output power will not exceed 50%. Below -10°C the unit will not power on.

How do I connect the AC input wires?

Connect the live wire to terminal marked L, neutral to N, and earth to the earth terminal (symbol ⏻). Ensure screws are tight and cables are rated for the current.

Can I use this power supply for LED lighting?

Yes, it is suitable for 12Vdc LED lighting systems, as well as radio equipment, security systems, alarm systems, and access control systems.

Does the unit have a cooling fan?

Only higher power models (e.g., 15A and above) are equipped with fan cooling. Lower power models (3.6A, 5.4A) rely on natural convection.

What should I do if the green LED does not light up?

Check that the AC input is connected correctly and the mains supply is active. Verify the earth connection. If the LED remains off, the unit may be faulty and should be inspected by a qualified professional.

USER MANUAL DC1248UK Mercury

Electronic component with perforated top and circuit board (no visible text or symbols)

13.8Vdc Switch Mode Power Supplies

User Manual

Please read through this manual thoroughly before use, any damage caused by misuse of product will not be covered by warranty.

Series of 13.8Vdc switching power supplies. Ideal use for radio equipment, security systems, alarm systems, access control systems, 12Vdc LED Lighting systems and central monitoring systems. For indoor use only.

Features:

• Short circuit protection.
  • Overload protection.
• Auto reset.
• Easy installation, screw terminals.
  • Fan cooling for higher power models.

• Higher power models with 2 or 3 outputs to facilitate easier wiring of multiple devices.

Specifications:

Item Ref	Output Voltage	Output Current	Max. Power	IP Rating	Power Supply	Outputs	Dimensions	Weight
650.755UK	13.8V	3.6A	49.68W	IP20	240Vac/1.3A, 50Hz	1	110 x 35 x 80mm	0.22kg
650.756UK	13.8V	5.4A	74.52W	IP20	240Vac/1.3A, 50Hz	1	110 x 35 x 80mm	0.22kg
650.759UK	13.8V	15A	207W	IP20	240Vac/2.5A, 50Hz	2	200 x 38 x 100mm	0.54kg
650.761UK	13.8V	25A	345W	IP20	240Vac/4A, 50Hz	3	220 x 50 x 115mm	0.85kg
650.762UK	13.8V	30A	414W	IP20	240Vac/4A, 50Hz	3	220 x 50 x 115mm	0.85kg
650.764UK	13.8V	43.5A	600.3W	IP20	240Vac/6A, 50Hz	3	240 x 65 x 125mm	1.15kg

Key Markings:

1. AC input connections: "live" and "neutral", the markings are displayed as "L", "N".
2. DC output connections "positive" and "negative", the markings are displayed as "+V", "-V".
3. The markings of multi-DC output voltage are "+V1", "+V2", "+V3", "+V4" "-V1", "-V2", "-V3", "-V4".
4. The common interface marking for multiple outputs is "COM".
5. The earth symbol is ±
6. Green LED indicator indicates power on.
7. Adjust voltage marking is displayed as "+V ADJ". Voltage adjustment range is 10% (12.42V-15.18V).

Before Power On:

1. Please check the input and output wires are wired correctly: live, neutral, earth wire for AC; positive, negative DC.
2. Check whether the current rating of connecting cables is large enough.
3. Please check the connection of screws are secure.
4. Please check the earth wire is firmly connected for safety.
5. When using large electrical equipment, please consider installing an AC filter.
6. Full load working temperature is -10\~40°C. Above this temperature will reduce the output power, i.e at 70°C the output power will not exceed 50%. Below -10°C, the unit will not power on.

Wiring Diagrams:

CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN

AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR

This symbol indicates that dangerous voltage constituting a risk of electric shock is present within this unit

This symbol indicates that there are important operating and maintenance instructions in the literature accompanying this unit.

Warnings:

1. For indoor use ONLY
2. This unit MUST be earthed.
3. Risk of electric shock: do not open, this device contains no user serviceable parts.
4. Do not cover the ventilation holes.
5. Do not install land operate the device in extreme heat, moisture, or dusty environments.
6. Unplug the power supply when not in use.
7. The appliance is not for use by children and children should be supervised when around this unit.
8. This appliance is for use by professional electrical installers only.

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UK CA

This product is classed as Electrical or Electronic equipment and should not be disposed with other household or commercial waste at the end of its useful life. The goods must be disposed of according to your local council guidelines.

Errors and omissions excepted.

Copyright© 2023 AVSL Group Ltd, Unit 2 Bridgewater Park,

Taylor Road, Trafford Park, Manchester. M41 7JQ.

AVSL (Europe) Ltd, Unit 3D North Point House, North Point Bus. Park, New Mallow Road, Cork, Ireland.