Overview
The ABB TU844 3BSE021445R1 is a Redundant Module Termination Unit designed for ABB’s 800xA control system. It provides reliable termination and routing for redundant field signals, ensuring continuous operation and enhanced system availability. With a stable, well-structured wiring interface, the TU844 is widely used in high-reliability applications such as power plants, chemical processing, and large-scale industrial automation.
General Information
Part Number: 3BSE021445R1
Manufacturer: ABB
Series: TU (Termination Unit)
Type: Redundant MTU
Mounting: DIN rail or cabinet installation
Technology: Dual-channel redundant field signal termination
Brand / Country of Origin: ABB / Sweden
Power Specifications
Supply Voltage: Powered through connected I/O modules
Power Consumption: ≤ 5 W
Input: From the I/O backplane
Protection: Built-in surge suppression and polarity protection
Communication & Interface
Interface Type: Redundant termination interface
Connectivity: Supports redundant I/O module channels
Field Wiring: Direct connection for redundant process signals
Diagnostics: Stable signal routing and wiring integrity support
Environmental
Operating Temperature: −20 to +60 °C
Humidity: Up to 95% RH, non-condensing
Protection Rating: IP20, suitable for installation in industrial control cabinets
Dimensions & Weight
Dimensions (L × W × H): 64 ×186.5 × 124 mm
Weight: 0.6kg
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