Description
GE IS420UCSBH1A UCSB Controller Module
The GE IS420UCSBH1A is a UCSB (Universal Control Subsystem B) controller module belonging to the GE Mark VIe turbine control system platform. As a core processing unit for gas and steam turbine control, the IS420UCSBH1A executes control logic, communicates with I/O modules and human-machine interfaces, and delivers reliable real-time monitoring and protection for power generation equipment. This GE IS420UCSBH1A module is widely used in power plant turbine control systems, available as original surplus, refurbished industrial spare parts for system replacement and maintenance.
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Key Features
- Part Number: IS420UCSBH1A, Brand: GE
- Platform: Mark VIe Universal Control Subsystem B (UCSB)
- High-speed real-time processing for turbine sequence control, protection and regulation
- Supports redundant operation configuration to improve system stability
- Seamless communication with Mark VIe I/O modules and HMI stations
- Designed for harsh industrial environment in power generation plants
- Standard industrial form factor, easy installation and replacement for existing Mark VIe rack
Technical Specifications
- Manufacturer: General Electric (GE)
- Model: IS420UCSBH1A
- Product Type: UCSB Universal Control Subsystem B Controller Module
- Series: Mark VIe Turbine Control System
- Processor: High performance 32-bit real-time processor
- Operating Voltage: 24 VDC (20–30 VDC operating range)
- Power Consumption: Max 20W
- Operating Temperature: 0°C ~ +60°C (Operating); -40°C ~ +85°C (Storage)
- Humidity: 5% to 95% non-condensing
- Communication Interface: Ethernet, Serial, Mark VIe backplane bus
- Redundancy: Support redundant control configuration (Hot standby)
- Function: Run control logic, data acquisition, real-time communication, unit protection
- Application: Gas Turbine / Steam Turbine Control & Protection
- Industry: Power generation, thermal power plant, energy industrial site
- Compatibility: GE Mark VIe DCS & Turbine control rack system
- Mounting: Rack mount for Mark VIe standard chassis
- Product Condition: Surplus / Refurbished spare part (no brand new factory stock)

Applications
GE IS420UCSBH1A UCSB controller module serves as the main controller for GE Mark VIe turbine control system. It is commonly deployed in thermal power plants, combined cycle power stations, gas turbine and steam turbine units. It is used for routine maintenance, emergency spare replacement, system upgrade and retrofit of power generation control systems.
Warranty & Shipping
- Inspection: Full functional testing before shipment
- Warranty: 120 days warranty for refurbished / surplus spare parts
- Packaging: Anti-static industrial packaging, safe export packing
- Lead time: 2-3 weeks upon receipt of advance payment
- Shipping: Global delivery via DHL / UPS / FedEx / sea freight








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