# AC-DC power supply, 13.8V, 5A

> AC-DC power supply model S-70-13.8, converts AC 110V/220V input voltage (±15%, 50/60Hz) into stable DC 13.8V, 5A, rated power 70W. Includes protection against short circuit, overload and overvoltage. Dimensions: 159x98x42 mm. Suitable for LED systems, CCTV, intercoms and access control. Not intended for charging batteries.

- Page: https://sigmanortec.ro/en/ac-dc-power-supply-138v-5a
- Price: 90.45 RON
- Availability: In stock; 1-2 zile
- Reference: 9845 · EAN: 5943360612474
- Category: Electronic components > Power Supply
- Specifications: Minimum Output Voltage: 13.8; Maximum Output Voltage: 13.8; Adjustment Type: Fixed; Maximum Output Current: 5; Output Voltage: 13.8 V; Input Voltage Type: AC; Output Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.34 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 05:21 (Europe/Bucharest)

## Description

Switching transformer for converting AC 110/220V to stable DC 13.8V, 5A, ideal for LED, CCTV, security, intercom and access control systems. Provides constant 70W power supply for safe operation, with overload, short circuit and overvoltage protection, in a compact 159x98x42 mm housing.
13.8V 5A (70W) switching power transformer, designed to convert 110V or 220V AC input voltage into a stable 13.8VDC DC voltage, suitable for devices such as LED monitoring systems, security systems, intercoms and access control. This power supply guarantees a constant and safe voltage for the proper operation of the equipment, thus protecting the connected devices against overloads and short circuits.
It is not used for charging batteries , because direct connection can damage both the power source and the battery.
Technical Specifications:
Model: S-70-13.8
Input voltage: AC 110V / 220V ±15%
Input frequency: 50/60 Hz
Output voltage: DC 13.8V
Output current: 5A
Nominal power: 70W
Protections: Protection against short circuit, overload, overvoltage
Output poles: L, N, FG, -V, +V
Dimensions: 159 x 98 x 42 mm
Use:
Connect the power supply to a compatible 110V or 220V AC outlet.
Make sure the connected devices are compatible with the specified output voltage and current (DC 13.8V, 5A).
Avoid connecting this source directly to a battery, as it may cause serious damage.
If an overload or a short circuit occurs, the power will automatically shut off. Check the connections and the load before reconnecting.
Place the unit in a well-ventilated area to prevent overheating and extend its life.