SCR power regulator
Products

Intelligent Digital Display SCR Power Regulator

- Three phase SCR power regulator
- 0-10V,4-20mA,0-5V,potentiometer input
- 24~480Vac load
- 40amps,60amps,75amps,100amps
- Digital LED display
- Ideal for resistive application

  • Item no.:

    SCR-51/6/7

Intelligent Digital Display SCR Power Regulator

-Three phase power regulator, auto phase detection
-Soft-start function to protect SCR and load against surge current
-Integrated display with various LED indicator for status and error display
-Integrated heatsink and fans with temperature detection
-Over temperature alarm, output protection after alarm on (except SCR-51)
-Maximum and minimum output configurable
-Auto/manual control bumpless transfer(except SCR-51)
-Run/Stop function
-RS-485 modbus RTU communication optional
-Rated load voltage 110~480Vac 50/60HZ
-Power supply for SCR to work is 100-240Vac
-Input, 0-10Vdc, 4-20mA, 0-5Vdc, 1-5Vdc, 2-10Vdc, 0-20mA, 0-10mA
-The SCR only works with resistive load, can’t work with capacitive load or inductive load

Cautions and notes

-Fast fuse must be deployed in the system to protect SCR
-SCR is not going to work if the load is less than 0.5A or without load
-A lot of heat will be generated when SCR operates, the ambient temperature must be less than 50, the integrated fans will be activated if temperature on the SCR heatsink greater than 60, if the ambient more than 60, additional fans must be installed in the control cabinet to help the cooling. Otherwise the self-protection mechanism will be triggered and output will be terminated.
-The screw must be fastened securely on the input and output, otherwise excessive heat will be accumulated on the screw and result in damage of the SCR


Connection diagram



Size and dimension



Panel discription


 


Click below link to download catalog and user manual, RS-485 modbus registry table

 

 

 

 

This video demonstrates a test we did on Maxwell SCR 3 phase power regulator The instruments you are able to see right away is an oscilloscope which shows the square wave of the load, the one our test engineer holds on hand is a standard signal generator which generates 4-20mA standard input signals, we feed the SCR with a small input and gradually increase the input, as you can see from the video, The lights in the video turned brighter as the input increase. And the 3 voltage meter shows the voltage of each phase, Voltage of each phase increases from 0V to somewhere close to 380Vac, other features like soft-start, minimum and maximum output, manual control, over temperature protections are also available with this SCR. RS-485 Modbus communication are also available

 

 

 

 

 

Related products
SCR Power Regulator

SCR-7E

Multi Input Digital Display SCR Power Regulator
● Three phase SCR power regulator● Universal input, supports all analog input● 24~480Vac load● 40amps,60amps,75amps optional● Digital LED display● Ideal for resistive application
view more
SCR Power Regulator

TC-200S

Advanced intelligent digital display three phase SCR Power regulator
Three-Phase Intelligent SCR Power Regulator The Maxwell TC-200S Series is an industrial-grade, three-phase intelligent SCR (Silicon Controlled Rectifier) power regulator designed for precise, stepless control of resistive heating loads in demanding industrial environments. Manufactured by Maxwell Automation Technology Co., Ltd. under the PIDMaxWell brand, the TC-200S combines a fully digital control architecture with an integrated dual-row LED display, multi-function indicator LEDs, and a front-panel keypad, enabling operators to monitor process parameters and adjust output settings directly without external programming tools. The regulator accepts a wide range of analogue control input signals — including 4–20 mA, 0–20 mA, 0–5 VDC, 0–10 VDC, 1–5 VDC, and 2–10 VDC — and features automatic phase detection, making it straightforward to integrate into new or existing control systems. An integrated soft-start (ramp) function eliminates inrush current surges at power-on, protecting both the SCR modules and the connected heating elements from thermal shock. When the heat-sink temperature exceeds the user-defined alarm threshold (AL1), the unit automatically reduces output power to a configurable safe level (EOP), maintaining process continuity while safeguarding the internal SCR modules from thermal damage. An optional RS-485 communication interface with Modbus-RTU protocol enables seamless integration into SCADA systems, PLCs, DCS, and industrial IoT networks. The TC-200S supports auto/manual bumpless transfer, run/stop control, and configurable minimum and maximum output limits, providing the flexibility required for a wide range of industrial heating and process control applications. Rated current options of 100 A, 125 A, 150 A, 175 A, 200 A, and 225 A cover load capacities from 48 kW to 190 kW (three-phase), making the TC-200S suitable for small laboratory ovens through to large industrial electric furnaces.
view more
SCR Power Regulator

MS-3VD38

Multi Input Three Phase SCR Power Regulator
● Three phase SCR power regulator● Universal input, supports all analog input● 24~440Vac load, cost effective● From 25 amps to 200 amps● Ideal for resistive load● MS-3VD3825C,MS-3VD3840C,MS-3VD3860C● MS-3VD3880C,MS-3VD38100C,MS-3VD38120C
view more
scr power regulator

SCR-51

3 Phase SCR Power Regulator for heater
SCR-51 series is a compact design cost effective three phase SCR power regulator, works perfectly for resistive load. With built-in heatsink and cooling fans.  Makes it very easy to use. Load option starts from 40 amps all the way up to 100 amps,  with a built-in overheat thermo protection to make your system always protected. Clear digital display for temperature and input/output indication.
view more
MS-1VR38 Potentiometer Input Solid State Relay

MS-1VR38

Potentiometer Input Solid State Relay
● Potentiometer input SCR● 500K, 1000K potentiometer● 24~480Vac load● From 10 amps up to 120 amps● 500K for 220Vac● 1000K for 480Vac
view more
Programmable din rail temperature transmitter

TT-311

Rail mount temperature transmitter
TT-311 is an input and output isolated din rail mounted temperature transmitter, it is 1 input and 1 output version, programmable via PC, software in English
view more
2123HSL/2082HSL/SP101A

2123HSL 2082HSL SP101A

8cm*8cmm and 12cm*12cmm cooling fans
● Cooling fans● 12cm*12cm or 8cm*8cm● Sleeve bearing fans● 220Vac or 110Vac
view more
40mm solid shaft rotary encoder

M40SA M40SB

40mm incremental optical solid shaft 360 ppr rotary encoder
- 40mm solid shaft optical rotary encoder- Can be used with Arduino for various projects- External diameter 40mm- small size, heavy duty, light weight, easy for installation- Resolution up to 3600 PPR- 6mm shaft size- 5-30VDC source, please specify the voltage while order with us- Aluminum housing, cable side entry or rear entry selectable- Standard cable length is 2 meters, cable length can be custom made                            
view more

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Home

Products

skype

whatsapp