Description The General Electric IS420UCSBH4A is a UCSB controller module designed for the Mark VIe platform and related EX2100e and LS2100e control systems. It provides high-speed control and processing using a 1066 MHz Intel EP80579 processor. This module is intended for demanding turbine, excitation, and industrial automation applications requiring reliable real-time performance. Technical Specifications Condition New/Never Used Surplus Brand General Electric Category PLCs / Machine Control Part Number IS420UCSBH4A Subcategory PLC Module / Rack Series Mark VIe Controller Type UCSB Controller Compatible Systems Mark VIe, EX2100e, LS2100e Processor Intel EP80579 Processor Speed 1066 MHz Functional Abbreviation UCSB Operating Temperature -30 °C to +65 °C Hazardous Location Rating UL E207685 Class I, Div 2, Groups A–D Application Turbine, excitation, and industrial control systems Information About The IS420UCSBH4A is part of GE’s Mark VIe family of distributed control and safety systems. It is constructed as a compact, industrial-grade controller module optimized for continuous-duty operation in harsh environments. The module integrates directly with Mark VIe, EX2100e, and LS2100e architectures, supporting seamless system communication and control expansion. It is commonly deployed in power generation and heavy industrial systems where deterministic processing, redundancy, and hazardous-location compliance are required. Key Features: Mark VIe platform compatibility: Designed for EX2100e, LS2100e, and Mark VIe systems. Intel EP80579 processor: 1066 MHz CPU for high-speed control execution. UCSB controller architecture: Supports distributed and redundant control configurations. Wide operating temperature range: Rated for -30 °C to +65 °C environments. Hazardous location approval: UL Class I, Division 2 certified. Industrial-grade design: Built for continuous operation in turbine and excitation systems. Modular integration: Interfaces easily with other Mark VIe control components. The IS420UCSBH4A delivers the reliability and precision required for advanced turbine control and industrial automation systems.