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Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product Model | HIEE401782R0001 LTC391AE01 |
| Manufacturer | ABB |
| Product Category | Thyristor Module (Power Electronics) |
| Voltage Rating | 1200V |
| Current Rating | 391A (continuous) |
| Module Type | Phase-Control Thyristor |
| Mounting Style | Screw-Terminal |
| Isolation Voltage | 2500V RMS |
| Operating Temperature | -40°C to +125°C (junction) |
| Cooling Method | Forced Air / Heat Sink |
| Weight | Approx. 450g |
| Compliance Standards | UL, CE, IEC 60747 |
ABB HIEE401782R0001 LTC391AE01
Product Introduction
The ABB HIEE401782R0001 LTC391AE01 is a high-power thyristor module designed for industrial power control applications, including motor drives, soft starters, and AC/DC power converters. Part of ABB’s LTC (Line-Triggered Thyristor) series, this module is optimized for phase-controlled rectification and switching in medium- to high-voltage systems.
With a 1200V blocking voltage and 391A continuous current rating, the LTC391AE01 is engineered for rugged industrial environments, offering high surge current capability and low thermal resistance. Its screw-terminal design ensures secure connections, while the electrically isolated baseplate simplifies heat sink mounting.
This thyristor module is widely used in steel mills, mining, cement plants, and power transmission systems, where reliable switching under heavy loads is critical.
Core Advantages and Technical Highlights
High Power Handling & Efficiency:
1200V voltage rating for medium-voltage applications
391A continuous current with high surge capability (up to 10x rated current)
Low forward voltage drop (V<sub>T</sub>) for reduced power loss
Robust Industrial Design:
Screw-terminal connections for high-current reliability
Isolated baseplate for easy heat sink mounting
Wide operating temperature (-40°C to +125°C junction)
High dV/dt and dI/dt immunity for stable switching
Application Flexibility:
Phase control in AC voltage regulators
Soft starters for large motors
DC drives and rectifiers
Static VAR compensators (SVCs)
Reliability & Longevity:
High thermal cycling capability
UL & CE certified for safety compliance
Optimized for industrial vibration & shock resistance
Typical Application Scenarios
The ABB HIEE401782R0001 LTC391AE01 is used in:
Industrial Motor Control:
Soft starting for crushers, compressors, and conveyors
Speed regulation in rolling mills
Power Conversion & Distribution:
AC/DC rectifiers in electrolysis plants
Static VAR compensation (SVC) in grid systems
Heavy Industry:
Electric arc furnace controls
Cement kiln drives
Its high surge current tolerance makes it ideal for high-inertia motor starts and pulsed power applications.
ABB HIEE401782R0001 LTC391AE01
Related Model Recommendations
| Model | Description |
| LTC381AE01 | Lower current variant (381A, 1200V) |
| LTC401AE01 | Higher voltage variant (1600V, 391A) |
| 5STP 26N4200 | Similar thyristor module (ABB alternative series) |
| 5SXE10-0181 | Gate driver board (compatible with LTC series) |
Installation, Commissioning & Maintenance
Installation Preparation:
Ensure proper heat sinking (thermal paste recommended).
Use torque-controlled screw terminals (per ABB specs).
Verify gate driver compatibility (pulse transformer or optocoupler).
Maintenance Recommendations:
Monitor junction temperature (avoid exceeding 125°C).
Check for loose terminals annually.
Inspect for thermal stress cracks in solder joints.
Service & Guarantee Commitment
ABB provides:
24-month standard warranty
Technical documentation & application notes
Failure analysis & replacement services
Long-term spare parts availability (10+ years)
The LTC391AE01 undergoes:
High-potential (Hi-Pot) testing
Thermal cycling validation
Surge current testing
Full 12-month warranty on all components- Dedicated after-sales support
- Same-day dispatch on 1000s of parts
- All units are fully tested
Full 12-month warranty on all components- 1. Email confirmation
You will get an email confirming that we have received your enquiry. - 2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition. - 3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
