ABB 5STP27L1800 is a high-power phase control thyristor (SCR) module used in industrial power electronics applications, especially ABB DC drives, industrial converters, and high-current rectifier systems. It is a semiconductor power switching component designed for controlled power conversion.
Product Identification
Item Description
Manufacturer ABB
Model 5STP27L1800
Component Type Phase control thyristor (SCR) module
ABB Internal Code DCA0016151P1 (used in some ABB drive documentation)
Application Power converter / DC drive thyristor stack
Technology Silicon-controlled rectifier (SCR)
Product Family ABB high-power thyristor semiconductor devices
Main Technical Characteristics
Parameter Value / Description
Device Type Thyristor module
Voltage Class Approximately 1800 V class
Current Class Approximately 2700 A class
Configuration High-current phase control thyristor
Cooling Method Forced air or heatsink cooling depending on converter design
Mounting Power semiconductor stack mounting
Gate Control Trigger pulse controlled SCR firing
Typical Applications
The ABB 5STP27L1800 is commonly used in:
1. DC Motor Drives
Armature current control
Controlled rectifier bridges
Large industrial DC drives
Example applications:
Steel rolling mills
Paper machines
Mining equipment
Hoisting systems
2. Industrial Power Converters
AC/DC converters
DC excitation systems
High-power rectifier units
3. ABB DCS Series Drives
The device appears in ABB DCS500 / DCS600 DC drive converter assemblies as a thyristor component used inside high-current converter modules.
Function Principle
A thyristor works as a controlled semiconductor switch:
The device blocks voltage in the off state.
A gate pulse triggers conduction.
Current flows from anode to cathode.
The device remains conducting until current falls below the holding current level.
In a controlled rectifier bridge, multiple thyristors are fired at controlled angles to regulate:
DC output voltage
DC motor speed
Motor torque
Regenerative braking operation
Replacement Considerations
When replacing a 5STP27L1800, verify:
Rated voltage class
Average on-state current
Surge current capability
Gate trigger requirements
Mechanical dimensions
Cooling interface
Pressure/contact mounting conditions
Equivalent replacement selection should be based on the complete converter design, not only the part number.
ABB 5STP27L1800｜Phase Control Thyristor｜
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