ABB TU845 3BSE021447R1 Redundant Module Termination Unit

Overview

The ABB TU845 (Part Number: 3BSE021447R1) is a Redundant Module Termination Unit (MTU) engineered for the S800 I/O platform.

Technical Specifications

• Product Type: Module Termination Unit (MTU) for Redundant Configuration
• Model Code: TU845
• Part Number: 3BSE021447R1
• Manufacturer: ABB
• System Family Compatibility: S800 I/O / AC 800M Controller Frameworks
• Mounting Orientation: Vertical DIN Rail Mounting
• Maximum Rated Voltage: 50 V
• Channel / Module Capacity: Dual-slot design for 1:1 redundant module pairs
• Ingress Protection Rating: IP20 (IEC 60529 Compliant)
• Product Net Dimensions: 18.65 cm x 12.4 cm x 6.4 cm
• Product Net Weight: 0.61 kg

Installation Notes

• Snap the TU845 MTU firmly onto the designated vertical enclosure DIN rail until the structural grounding springs make solid, paint-free mechanical contact.
• Adjust the mechanical alignment keys with a standard flat tool to exactly mirror the profile of the target S800 redundant I/O module pair before insertion.
• Terminate external power lines and sensor field loops cleanly into the compression screw blocks, maintaining standard industrial torque limits to prevent wire stripping.
• Verify backplane ModuleBus continuity across adjacent MTUs before driving the primary controller racks into an operational run state.