# Voltage and speed regulator SCR 4000W, 220VAC

> SCR voltage regulator for 220V AC supply, with adjustable output between 10V and 220V. Supports up to 4000W on resistive loads (below 2000W at room temperature). Module with double isolation and aluminum housing, anti-spike and surge protection. Dimensions 85 x 65 x 38mm. Used to regulate voltage/speed for universal motors, resistors, heaters or lighting.

- Page: https://sigmanortec.ro/en/voltage-and-speed-regulator-scr-4000w-220vac
- Price: 35.88 RON
- Availability: In stock; 1-2 zile
- Reference: 33437 · EAN: 5944110280417
- Category: Electronic components > Variators
- Specifications: Voltage Adjustment: Yes; Adjustment Type: Variable; Maximum Controlled Power: 4000 W; Input Voltage: 220 V; Input Voltage Type: AC; Output Voltage Type: AC
- Package (shipping data): 0.124 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 02:21 (Europe/Bucharest)

## Description

Continuously regulates voltage and implicitly speed for universal motors, resistors, heaters or lighting, 220V AC power supply with adjustable output 10-220V. SCR module with double insulation and aluminum housing for heat dissipation and safety, supports up to 4000W on resistive loads, includes anti-spike and surge protections for stable operation.
Double-insulated module and aluminum housing for safety
It can be used as an adjustable voltage source and for any application that requires output voltage regulation.
Connect a consumer before putting the module into operation. At room temperature, the maximum power is 2000W.
For inductive or capacitive loads, the maximum supported power is reduced by half.
IMPORTANT! IGNORE the markings on the housing! The housing is used on several versions of the regulators and may have an incorrect connection diagram. To determine the input and output, we recommend opening the housing and inspecting the circuit. The input is recommended on the terminal connected directly to the glass fuse. If the fuse is connected on terminal 3, use 3 and 4 for input, 1 and 2 for output.
The metal housing is produced by pressing and bending. It may be more or less deformed (the grid segment), which does not affect the operation of the module in any way. Please consider this before placing your order. A bent housing is not a reason for return.
Specifications:
Operating voltage: 220V AC
Type: Voltage regulator
Maximum power: 4000W, resistive loads
Maximum power at room temperature: <2000W
Voltage adjustment: between 10V and 220V
Protection: Anti-spike, Surge, RC absorption (EOC)
Dimensions mm: 85 x 65 x 38mm
Use: