🧾 Product Overview
Brand: ABB
Part Number: DKTFM418B
Type: Thyristor Firing Module / Trigger Unit
Function: Provides precise triggering signals for power thyristors in industrial converters and drive systems
The ABB DKTFM418B is a thyristor firing module designed for reliable and synchronized control of power semiconductor devices in medium- and high-power applications. It converts control commands from the drive or control system into accurate gate pulses for thyristor switching, ensuring stable operation of power conversion systems.
⚙ Key Features and Functions
Precise Thyristor Triggering
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Generates accurate gate pulses for controlled thyristor turn-on
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Supports single-phase or multi-phase configurations
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Adjustable firing angle to control output voltage and power
High Reliability
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Built with industrial-grade components for long service life
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Resistant to electrical noise and voltage surges
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Operates reliably in harsh industrial environments
Flexible Integration
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Compatible with ABB power converters and drives
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Can be used in retrofit or upgrade projects
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Supports multiple control signal formats from external systems
Protection and Diagnostics
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Includes protection circuits against overvoltage and incorrect firing sequences
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Built-in status indicators for operational monitoring
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Can detect and respond to abnormal load or device conditions
📐 Typical Technical Parameters*
(*Values may vary depending on application)
| Parameter | Typical Value |
|---|---|
| Device Type | Thyristor firing module |
| Control Voltage Input | Low-voltage control signals |
| Output Type | Gate pulses to thyristor |
| Firing Angle Range | 0° – 180° adjustable |
| Cooling Method | Natural convection |
| Operating Temperature | –20°C to +60°C |
| Mounting | Panel or rack-mounted |






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