IS420UCSBS1A Safety Controller Module

IS420UCSBS1A is a General Electric (GE) Mark VIe series safety controller module used in industrial automation critical control systems such as gas turbines, electricity, oil and gas, and rail transit. It supports panel installation, 28VDC power supply (18-36VDC range), Ethernet/Profibus communication, -30 ° C to+65 ° C operating temperature, and complies with IEC 61508/SIL safety standards. ‌‌

Manufacturer: General Electric (GE)
Series: Mark VIe (commonly known as Mark VIeS)
Type: Security Controller Module (Non I/O or Switch); Pay attention to distinguishing from IS420UCSBH1A, etc
Core functions: Perform safety interlocking, emergency shutdown (ESD), process monitoring, belong to the control core rather than pure communication or I/O modules
Installation: Panel thin plate type, UL E207685 certification, suitable for Class I, Zone 2, Group IIC hazardous areas
Typical applications: power plants (gas turbine/steam turbine control), chemical plants, oil and gas platforms, rail transit safety systems
Attention: Some information in public materials (such as “600MHz Intel EP80579 processor” and “256MB DDR2”) is sourced from unofficial channels or confused with other Mark VIe modules (such as UCSBH1A), and GE has not disclosed the complete internal specifications of this module; The actual selection and replacement should be based on GE official documents (such as GEK series manuals) or authorized service providers. This module has been discontinued for many years and is now a circulating product in the industrial spare parts market. ‌‌