SQL Three-Phase Bridge Rectifier Module 40A–150A 1000V–1600V
SQL Three-Phase Bridge Rectifier Module 40A–150A 1000V–1600V
Three-Phase Bridge Rectifier Module — SQL Series (40A / 60A / 80A / 100A / 150A | 1000V / 1200V / 1600V)
The SQL Series Three-Phase Bridge Rectifier Module delivers reliable AC-to-DC conversion for industrial power supplies, motor drives, welding equipment, and a wide range of heavy-duty electrical applications. Available in multiple current and voltage ratings, this compact module is engineered for efficient full-wave rectification in three-phase systems.
Key Features
- Multiple Current Ratings: Available in 40A, 60A, 80A, 100A, and 150A configurations to match your load requirements.
- Wide Voltage Range: Rated for 1000V, 1200V, and 1600V — suitable for medium and high-voltage three-phase AC inputs.
- Full-Wave Three-Phase Rectification: Converts three-phase AC power to smooth DC output with minimal ripple for stable, efficient operation.
- Compact Bridge Module Design: Single-package construction simplifies installation and reduces wiring complexity compared to discrete diode assemblies.
- Robust Construction: Built to withstand demanding industrial environments with high thermal stability and reliable insulation.
- Versatile Applications: Ideal for industrial inverters, UPS systems, motor speed controllers, battery chargers, welding machines, and power conversion equipment.
- Easy Mounting: Standard bolt-down footprint for secure panel or heatsink mounting.
Technical Specifications
| Series | SQL |
| Configuration | Three-Phase Bridge Rectifier |
| Current Ratings | 40A, 60A, 80A, 100A, 150A |
| Voltage Ratings (VRRM) | 1000V, 1200V, 1600V |
| Conversion | AC to DC (Three-Phase Input) |
| Package Type | Compact Bridge Module |
| Country of Origin | Made in Mainland China |
Common Applications
- Industrial power supplies and inverters
- Variable frequency drives (VFDs) and motor controllers
- Welding and cutting power sources
- Uninterruptible Power Supplies (UPS)
- Battery charging systems
- Electroplating and electrolysis equipment
- DC power distribution panels
Installation & Safety
Always mount the rectifier module on an appropriately rated heatsink to ensure proper thermal dissipation. Follow local electrical codes and standards when integrating into any power system. For guidance on electrical safety best practices, refer to OSHA's Electrical Safety Standards.
Frequently Asked Questions
Q: What is a three-phase bridge rectifier module used for?
A: A three-phase bridge rectifier module converts three-phase AC (alternating current) power into DC (direct current). It is widely used in industrial equipment such as motor drives, inverters, welding machines, UPS systems, and battery chargers where a stable DC supply is required from a three-phase AC source.
Q: How do I choose the right SQL module rating (40A, 60A, 80A, 100A, or 150A)?
A: Select a current rating that meets or exceeds your circuit's maximum continuous load current. For voltage, choose a VRRM rating (1000V, 1200V, or 1600V) that is at least 2× your peak AC line-to-line voltage for a safe operating margin. When in doubt, size up to the next higher rating for added reliability.
Q: Does the SQL bridge rectifier module require a heatsink?
A: Yes. At higher current loads, the module generates significant heat. Mounting it on a properly sized heatsink — with thermal compound applied — is essential for maintaining performance and long-term reliability. Always consult the datasheet for thermal resistance specifications.
Q: What is the difference between the SQL100A1200V and SQL150A1600V models?
A: The SQL100A1200V is rated for a maximum of 100 amps and 1200V, making it suitable for medium-load three-phase applications. The SQL150A1600V handles up to 150 amps and 1600V, designed for higher-power or higher-voltage industrial systems requiring greater capacity and voltage headroom.