Solid State Relays & SCR Power Modules
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.
- 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
- Stock / sample dispatch
- 3–5 working days
- Warranty
- 12 months
- OEM
- Supported
- Shipping
- Worldwide export
Technical specifications
| Product Series | BSTY Series |
|---|---|
| Product Type | Three-Phase SCR AC Voltage Regulator |
| Working Voltage | 3-Phase 380VAC ±5% |
| Rated Current | 150A / 200A / 300A / 350A / 400A / 450A |
| Control Method | Phase-Angle Regulation, 0–180° |
| Manual Control | 10KΩ / 2W Potentiometer |
| Analog Input | 1–5V, 2–10V, 4–20mA |
| Soft Start Time | 2s default, adjustable 0–15s |
| Protection | Over-temperature protection, 85°C cut-off |
| Insulation | Fully isolated control and power circuits |
| Phase Sequence | No restriction |
| Mounting | Bolt Installation |
| Application Load | Three-phase resistive load |
Technical Specifications & Installation Guide
The BSTY three-phase intelligent AC voltage regulator module supports 380 VAC three-phase main-circuit input and 220 VAC control power. It accepts 10 kΩ potentiometer, DC 1–5 V, DC 2–10 V, DC 4–20 mA and DC 2–10 mA control signals. The module provides stepless 0–180° voltage regulation, built-in soft start and 85°C overtemperature protection.
Specifications and Dimensions
Wiring Diagrams
Warning: Wiring must be performed by qualified personnel. Disconnect all power before installation or maintenance.
Control Wiring and Precautions
Related guides
SCR3L Three-Phase SCR Voltage Regulator: Signal Wiring, Sizing and Installation
Electrical data, control signal options, four-wire 380VAC connection rules, current sizing, mounting dimensions and commissioning steps for the SCR3L three-phase intelligent SCR voltage regulator.
Read guide Technical Guides · 2025-08-28BSTY Three-Phase SCR AC Power Regulator: Signal Options, Sizing and Commissioning
Electrical data, control signal selection, current sizing for three-phase resistive loads, soft-start and thermal protection settings, wiring practice and commissioning steps for the BSTY three-phase SCR power regulator.
Read guide Technical Guides · 2025-04-12SCR Voltage Regulator Circuit Diagram and Wiring Guide
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