# Power supply 220VAC to 18VDC, 3A, 54W

> Power supply converting 220VAC (100-230VAC) to 18VDC, with maximum output current of 3A and power of 54W. Step-down type, fixed voltage, fine adjustable via potentiometer. Metal housing with aluminum base, protections against undervoltage, overload and overvoltage. Insulation 50MΩ at 500VDC, output voltage accuracy 5%-10%. Dimensions 160x100x42mm. For indoor use only. Reference 9770.

- Page: https://sigmanortec.ro/en/power-supply-220vac-to-18vdc-3a-54w
- Price: 65.64 RON
- Availability: In stock; 1-2 zile
- Reference: 9770 · EAN: 5943267608563
- Category: Electronic components > Power Supply
- Specifications: Power: Over 20W; Source Type: descend; Adjustment Type: Fixed; Maximum Output Current: 3 A; Output Voltage: 18 VDC; Input Voltage Type: AC; Output Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.204 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:22 (Europe/Bucharest)

## Description

Power converter 100-230VAC to 18VDC, 3A, ideal for electronic equipment and industrial applications, delivers stable voltage for safe operation, metal housing with aluminum base ensures resistance and good heat dissipation, includes undervoltage, overload and overvoltage protection, output is finely adjustable via potentiometer.
Power supply converter from 110-220VAC to 18V DC, which offers a stable output current of 3A. It offers a constant output voltage of 18V DC, ideal for powering a variety of electronic devices and equipment.
The case is made of metal and has an aluminum base, offering durability and resistance to environmental factors, as well as good heat dissipation.
Includes voltage deficit, overload and over-voltage protections, ensuring safety in use.
It offers an isolation of 50MΩ at 500VDC and an output voltage accuracy of 5%-10%, with the possibility of fine adjustment through the potentiometer accessible on the circuit board.
Important : The source is designed to be used only indoors, ensuring protection against external elements. Does not include installation instructions, power cords, on/off switch or screws. Installation by a qualified electrician is recommended to ensure compliance with safety standards and maximum efficiency.
Specifications:
Input Voltage: 100 - 230VAC
Output Voltage: DC 18V
Output Current: 3A
Housing Material: Metal and Aluminum
Protections: Protection against voltage deficit, overload and over-voltage
Ambient Humidity: <85% without condensation
Insulation: 50MΩ min (500VDC)
Accuracy of Output Voltage: 5%-10%, finely adjustable
Nominal power: 54W
Cooling Design: Mesh for efficient cooling
Use: Indoors only
Dimensions: 160 x 100 x 42mm