ABB SKKH280/20EH Thyristor/Diode Module

1. Product Overview

The ABB SKKH280/20EH Module is a high-performance power electronic device integrating a thyristor and diode, primarily used in industrial drives, power rectifiers, soft starters, and other power control applications. The module features high current-carrying capability, excellent thermal performance, and reliable switching characteristics, ensuring efficient power control and stable operation. Its modular design facilitates easy installation, replacement, and maintenance, suitable for industrial automation and heavy-duty power electronics equipment.

2. Technical Specifications

• Model: SKKH280/20EH

• Type: Thyristor/Diode Power Module

• Current Rating: 280 A

• Voltage Rating: 1200 V

• Switch Type: Thyristor + Diode

• Trigger Method: Gate Trigger

• Cooling Method: Direct heatsink / Forced air cooling

• Operating Temperature: -40°C to +125°C (junction temperature)

• Storage Temperature: -40°C to +125°C

• Package Type: Modular power package (Press-fit / Bolt-on)

• Insulation Voltage: 2.5 kV AC

• Typical Applications: Rectification, power regulation, soft start, inverter

• Weight: ~0.75 kg

3. Advantages and Features

• High current capability: Supports high-current requirements for motors and industrial equipment.

• Excellent thermal performance: Optimized heat dissipation for long-term continuous operation.

• Reliable switching: Fast response and stable gate triggering enhance system control accuracy.

• Modular design: Easy replacement and maintenance, reducing downtime cost.

• Wide application: Suitable for rectifiers, drives, soft starters, inverters, and other power control scenarios.

4. Typical Applications

• Industrial variable frequency drives and motor drives

• Power rectifiers and regulators

• Soft starters and motor protection

• Industrial inverters and power electronics equipment

• Power automation and high-power control systems

5. Installation & Usage Notes

• Ensure current and voltage match the module rating before installation.

• Mount the module securely on a heatsink with good thermal compound contact.

• Avoid overloading and excessive temperature to ensure long-term reliability.

• Keep the installation environment dry and clean to prevent dust or liquid ingress.

• Regularly monitor module temperature and operational status for early fault detection.

The structure and details of the product： ​

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