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SCR Power Regulators Series Variable Transformers
8 Models available
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SCR Power Regulators — Thyristor Power Controllers
SCR (thyristor) power regulators provide stepless power control for resistive heating loads by phase-angle or zero-cross firing of thyristors. Rated 10–2000 A for single-phase and three-phase loads, they regulate power to electric heaters, furnaces and drying ovens with fast response and high efficiency.
Key Features
Thyristor (SCR) phase-angle or zero-cross control
10–2000 A single-phase and three-phase
Stepless power regulation for resistive loads
Fast response and high efficiency
Over-temperature and over-current protection
Analog or digital control signal input
Applications
- Electric heater and furnace control
- Drying ovens and kilns
- Plastic and rubber processing
- Industrial temperature control
Specifications Range
All specifications and dimensions can be customized upon request
Model Selector
| Key parameters | Model Range |
|---|---|
| Capacity | 40–600 kVA |
| Current (A) | 40–600 A |
| Input voltage | 380VAC (3-phase) |
| Output voltage | 0-380V phase-controlled |
| Frequency (Hz) | 50/60 |
| Compare | Model | Series | Capacity (kVA) | Input voltage | Output voltage | Frequency (Hz) | Weight | Dimensions |
|---|---|---|---|---|---|---|---|---|
| SCR-40A | SCR Power Regulators | 40A | 380VAC (3-phase) | 0-380V phase-controlled | 50/60 | 26 kg | 510×445×765 mm | |
| SCR-80A | SCR Power Regulators | 80A | 380VAC (3-phase) | 0-380V phase-controlled | 50/60 | 35 kg | 565×495×850 mm | |
| SCR-120A | SCR Power Regulators | 120A | 380VAC (3-phase) | 0-380V phase-controlled | 50/60 | 44 kg | 615×540×925 mm | |
| SCR-160A | SCR Power Regulators | 160A | 380VAC (3-phase) | 0-380V phase-controlled | 50/60 | 52 kg | 660×575×990 mm | |
| SCR-250A | SCR Power Regulators | 250A | 380VAC (3-phase) | 0-380V phase-controlled | 50/60 | 69 kg | 740×650×1115 mm | |
| SCR-320A | SCR Power Regulators | 320A | 380VAC (3-phase) | 0-380V phase-controlled | 50/60 | 82 kg | 800×700×1200 mm | |
| SCR-420A | SCR Power Regulators | 420A | 380VAC (3-phase) | 0-380V phase-controlled | 50/60 | 99 kg | 870×760×1310 mm | |
| SCR-600A | SCR Power Regulators | 600A | 380VAC (3-phase) | 0-380V phase-controlled | 50/60 | 129 kg | 990×865×1485 mm |
Product Drawing
Electrical Equipment - SCR-250A
Note: This is a general product illustration. For detailed technical drawings and specifications, please contact our engineering team.
Selection Guide
Control mode
Choose phase-angle for fast control or zero-cross for low-harmonic heating.
Current
Size the SCR rating to the load current with headroom.
- Frequently Asked Questions
What is an SCR power regulator?
An SCR (thyristor) power regulator controls the power delivered to a resistive load by varying the conduction angle (phase-angle) or switching cycles (zero-cross), giving stepless regulation.
Phase-angle or zero-cross?
Phase-angle suits loads needing fast fine control; zero-cross reduces harmonics and EMI for resistive heating.
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