3-phase AC Voltage Regulator
- Output voltage is continuously and steplessly adjustable.
- Supports multiple control signal types.
- Built-in soft-start function.
- Three-phase symmetrical output.
- Fully isolated design with high isolation withstand voltage.
- Power indicator and operation indicator.
Product Overview & Applications:
An SCR (Silicon Controlled Rectifier) power controller is a semiconductor device that regulates output power by adjusting the firing angle of the output thyristor; this alters the voltage across the load, thereby enabling smooth, continuous adjustment of the load voltage from zero up to the full input voltage.
The SCR power regulator manufactured by LCTC is an economical three-phase voltage regulator that utilizes a phase-shift output method. Furthermore, we also offer more advanced closed-loop thyristor power controllers specifically designed for heating applications.
Model Description:

1. LC : Company Code
2. SCR : Product Series Code
3. 3 : 3-Phase Forward/Reverse Solid-State Relay
4. 380V : Output Voltage 380V
5. 40A : Load Current (10/25/40/60/80/100/120/150/180/200A)
Technical Parameters
Product Specifications | |||
| Model: | LCSCR 380V | ||
| Load Current: | 10/25/40/60/80/100/120/150/180/200A | Insulation Resistance: | 1000MΩ (500VDC) |
| Control Signal: | 2W(10K) / 0-10V / 0-5V / COM / 4-20mA / 0-10mA | Ambient Temperature: | -30℃~+75℃ |
| ON-state Voltage Drop: | ≤1.5V | Installation Method: | Bolt installation |
| Off Leakage Current: | ≤5mA | Indicator: | LED |
| Dielectric Strength: | 4000VAC, 50Hz/60Hz, 1min | Max Off-State Leakage Current: | 2mA |
Precautions
1.Can’t control AC motor speed!!!
2.This type of voltage regulating module is not suitable for inductive loads such as transformers and motors.
3. When selecting the model, please consider the actual load current and the operating ambient temperature.
4. Do not use this product under conditions that exceed the parameters listed in the product specifications.
5. The load must be connected when performing tests.
Choose A Suitable Heat Sink
1.When SSR is working, it will give out a lot of heat, so in order to extend the life of your SSR, please install a heat sink.
2.Don’t forget to apply heat-conductive silicon grease between SSR and heat sink.
Note: The radiator needs to be purchased separately!
Wiring Diagram







