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Product Introduction
The ABB DASD146 3ASC25H270 Thyristor Module is a high-performance, industrial-grade thyristor unit designed for power control in advanced automation systems. Engineered by ABB, a global leader in industrial automation, the DASD146 module provides precise and reliable switching for controlling high-power loads in demanding applications such as heating, motor drives, rectification circuits, and power factor correction systems.
The module leverages thyristor technology (also known as silicon-controlled rectifiers, or SCRs), which enables highly efficient and fast switching of AC power to deliver smooth control of electrical energy. Its rugged construction, high thermal capacity, and robust electrical characteristics make it ideal for both continuous operation and dynamic response requirements in critical industrial systems.
Whether used in standalone power electronics assemblies or integrated within ABB’s broader automation ecosystems, such as Symphony Plus, AC 800M, and process control platforms, the DASD146 module helps ensure long-term reliability, low maintenance requirements, and optimized power control.
Product Specifications
| Parameter | Value |
|---|---|
| Product Name | ABB DASD146 3ASC25H270 Thyristor Module |
| Device Type | Thyristor (SCR) Module |
| Voltage Rating | 1600 V (peak repetitive off-state voltage) |
| Current Rating | 180 A (RMS on-state current) |
| Gate Trigger Current (Igt) | 150 mA |
| Gate Trigger Voltage (Vgt) | 2.5 V |
| Holding Current (Ih) | 100 mA |
| Peak Surge Current (Itsm) | 1800 A (10 ms half-sine) |
| dv/dt (critical rate of rise) | ≥ 1000 V/μs |
| Operating Temperature Range | -40°C to +125°C |
| Storage Temperature Range | -55°C to +150°C |
| Cooling Method | Forced air or heat-sink (external cooling required) |
| Isolation Voltage | 2500 Vrms |
| Mounting Type | Panel mount / screw terminals |
| Dimensions (H x W x D) | 150 x 120 x 80 mm |
| Weight | 2.5 kg |
| Certifications | CE, RoHS compliant |
| Compatible Systems | ABB Symphony Plus, AC 800M, power electronic assemblies |
Product Applications
The ABB DASD146 3ASC25H270 Thyristor Module is widely deployed across industries where precise AC power control is essential for process optimization and energy efficiency:
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Industrial Heating Systems: Enables precise control of electric heaters, ovens, and furnaces.
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Motor Drives: Used in soft starters and variable-speed drives to manage motor torque and acceleration.
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Power Factor Correction: Regulates reactive power compensation for improving grid efficiency.
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Rectifiers: Converts AC to DC in controlled rectification circuits for electroplating, smelting, and battery charging.
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Lighting Control: Dims high-power lighting systems in commercial and industrial installations.
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Renewable Energy: Manages power conversion in solar and wind systems.
Product Advantages
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High Performance: Supports 180 A RMS current with fast and precise switching capability for advanced power control.
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Rugged Construction: Designed for use in harsh environments with operating temperatures up to +125°C.
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Compact Footprint: Small size (150 x 120 x 80 mm) allows for easy integration into compact power control enclosures.
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Thermal Reliability: Excellent thermal cycling characteristics ensure long service life under repetitive switching loads.
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Low Trigger Power: Operates with low gate trigger current and voltage for simple drive circuit design.
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High dv/dt Tolerance: Provides robustness against fast voltage transients in noisy industrial environments.
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Flexible Cooling Options: Compatible with both forced air and heat-sink cooling, giving flexibility in system design.
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Industrial Compatibility: Seamlessly integrates with ABB Symphony Plus, AC 800M, and industrial control architectures.
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Compliance: Meets stringent quality and environmental standards (CE, RoHS).
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Ease of Installation: Designed for panel mounting with screw terminals for straightforward field installation.
Frequently Asked Questions (FAQ)
1. What type of device is the ABB DASD146 module?
It is a thyristor (SCR) module, used for controlling high-power AC loads.
2. What is the maximum operating current of the DASD146 module?
It supports 180 A RMS on-state current.
3. Can this thyristor be used in heating applications?
Yes, it is well suited for controlling industrial electric heating systems.
4. What voltage ratings does the module support?
It is rated for 1600 V peak repetitive off-state voltage.
5. What are typical cooling requirements?
External heat sinks or forced air cooling is required for optimal performance under load.
6. Is the DASD146 compatible with ABB Symphony Plus systems?
Yes, it integrates smoothly with ABB Symphony Plus, AC 800M, and related platforms.
7. What is the typical gate trigger current?
It requires a gate trigger current (Igt) of 150 mA.
8. In what industries is the DASD146 commonly used?
It is widely used in power generation, process heating, motor drives, renewable energy, lighting control, and more.
9. What type of mounting is supported?
It is designed for panel mounting using screw terminals.
10. What is the product’s weight and size?
The module measures 150 x 120 x 80 mm and weighs 2.5 kg.
Recommended Related Models (Same Series or Related Models)
| Model Number | Key Specifications |
|---|---|
| ABB DASD140 | 140 A, 1200 V thyristor module |
| ABB DASD150 | 150 A, 1400 V thyristor module |
| ABB DASD155 | 155 A, 1600 V SCR module |
| ABB DASD160 | 160 A, 1200 V thyristor for heating and drives |
| ABB DASD172 | 170 A, 1400 V thyristor with enhanced thermal capability |
| ABB DASD180 | 180 A, 1600 V high dv/dt SCR for industrial applications |
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