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BSTY Three-Phase SCR Voltage Regulator 380V, 150A–450A

scr voltage regulator ac voltage controller

BSTY Series Three-Phase SCR Voltage Regulator is designed for 380VAC industrial heating and power control applications. It supports phase-angle control, analog signal input, soft start, over-temperature protection and fully isolated control circuits.
The series is available from 150A to 450A and is widely used in ovens, drying equipment, blow molding machines, thermoforming equipment, hot runner systems and other three-phase resistive load control applications.

BSTY Three-Phase SCR Voltage Regulator 380V, 150A–450A

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Key Features Technical Specifications Model Selection Guide Application Scenarios FAQ

  • Three-phase SCR voltage regulation for industrial heating control
  • Phase-angle control with smooth output adjustment
  • Supports analog signal control: 1–5V, 2–10V, 4–20mA
  • Manual control with 10KΩ potentiometer
  • Built-in soft start function, adjustable from 0–15 seconds
  • Over-temperature protection with 85°C cut-off
  • Fully isolated control and power circuits
  • No phase sequence requirement, easier wiring
  • Available current ratings from 150A to 450A
  • Suitable for ovens, heaters, hot runner systems and molding machines

ItemSpecification
Product SeriesBSTY Series
Product TypeThree-Phase SCR AC Voltage Regulator
Working Voltage3-Phase 380VAC ±5%
Rated Current150A / 200A / 300A / 350A / 400A / 450A
Control MethodPhase-Angle Regulation, 0–180°
Manual Control10KΩ / 2W Potentiometer
Analog Input1–5V, 2–10V, 4–20mA
Soft Start Time2s default, adjustable 0–15s
ProtectionOver-temperature protection, 85°C cut-off
InsulationFully isolated control and power circuits
Phase SequenceNo restriction
MountingBolt Installation
Application LoadThree-phase resistive load




  • Industrial electric ovens
  • Drying and curing equipment
  • Blow molding machines
  • Thermoforming machines
  • Hot runner mold systems
  • Heating furnaces
  • Plastic machinery
  • Rubber machinery
  • Three-phase heater control systems
  • Automation power control cabinets

Q1: What load type is BSTY suitable for?
BSTY is mainly suitable for three-phase resistive loads, such as electric heaters, ovens, heating plates and hot runner systems.

Q2: What control signals does BSTY support?
It supports analog signal input such as 1–5V, 2–10V and 4–20mA. Manual control with a 10KΩ potentiometer is also available.

Q3: Does BSTY support soft start?
Yes. The soft start time is 2 seconds by default and can be adjusted from 0 to 15 seconds.

Q4: Is phase sequence required during wiring?
No. The BSTY series does not require strict phase sequence, making wiring easier.

Q5: What current ratings are available?
Common models include 150A, 200A, 300A, 350A, 400A and 450A.


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Key Features
  • Three-phase SCR voltage regulation for industrial heating control
  • Phase-angle control with smooth output adjustment
  • Supports analog signal control: 1–5V, 2–10V, 4–20mA
  • Manual control with 10KΩ potentiometer
  • Built-in soft start function, adjustable from 0–15 seconds
  • Over-temperature protection with 85°C cut-off
  • Fully isolated control and power circuits
  • No phase sequence requirement, easier wiring
  • Available current ratings from 150A to 450A
  • Suitable for ovens, heaters, hot runner systems and molding machines

Technical Specifications
ItemSpecification
Product SeriesBSTY Series
Product TypeThree-Phase SCR AC Voltage Regulator
Working Voltage3-Phase 380VAC ±5%
Rated Current150A / 200A / 300A / 350A / 400A / 450A
Control MethodPhase-Angle Regulation, 0–180°
Manual Control10KΩ / 2W Potentiometer
Analog Input1–5V, 2–10V, 4–20mA
Soft Start Time2s default, adjustable 0–15s
ProtectionOver-temperature protection, 85°C cut-off
InsulationFully isolated control and power circuits
Phase SequenceNo restriction
MountingBolt Installation
Application LoadThree-phase resistive load


Model Selection Guide



Application Scenarios
  • Industrial electric ovens
  • Drying and curing equipment
  • Blow molding machines
  • Thermoforming machines
  • Hot runner mold systems
  • Heating furnaces
  • Plastic machinery
  • Rubber machinery
  • Three-phase heater control systems
  • Automation power control cabinets

FAQ

Q1: What load type is BSTY suitable for?
BSTY is mainly suitable for three-phase resistive loads, such as electric heaters, ovens, heating plates and hot runner systems.

Q2: What control signals does BSTY support?
It supports analog signal input such as 1–5V, 2–10V and 4–20mA. Manual control with a 10KΩ potentiometer is also available.

Q3: Does BSTY support soft start?
Yes. The soft start time is 2 seconds by default and can be adjusted from 0 to 15 seconds.

Q4: Is phase sequence required during wiring?
No. The BSTY series does not require strict phase sequence, making wiring easier.

Q5: What current ratings are available?
Common models include 150A, 200A, 300A, 350A, 400A and 450A.


BSTY Three-Phase SCR Voltage Regulator 380V, 150A–450A
BSTY Series Three-Phase SCR Voltage Regulator is designed for 380VAC industrial heating and power control applications. It supports phase-angle control, analog signal input, soft start, over-temperature protection and fully isolated control circuits.
The series is available from 150A to 450A and is widely used in ovens, drying equipment, blow molding machines, thermoforming equipment, hot runner systems and other three-phase resistive load control applications.
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