ABB S800 I/O TU837V1 3BSE013238R1 Extended Module Termination Unit

Overview

The ABB TU837V1 (Part Number: 3BSE013238R1) is an Extended Module Termination Unit (MTU) designed for the S800 I/O platform. It functions as a single-slot, non-redundant, passive interface baseplate that connects one S800 I/O module to the ModuleBus. Featuring three rows of compression screw terminals with increased cross-sectional wiring capacity, the TU837V1 provides robust field-side signal aggregation and distribution without active electronic failure points on the board.

Technical Specifications

• Product Type: Extended Module Termination Unit (MTU) for Non-Redundant Configurations
• Model Code: TU837V1
• Part Number: 3BSE013238R1
• Manufacturer: ABB
• System Family Compatibility: S800 I/O System (Accepts various 800-series modules)
• Channel / Module Capacity: Single-slot layout (1 module per MTU)
• Terminal Design Framework: Three-row heavy-duty compression screw terminal block architecture
• Maximum Rated Isolation Voltage: 50 V
• Signal Connection Wire Sizes: Solid: 0.2 to 6.0 mm² / Stranded: 0.2 to 4.0 mm² (24 to 10 AWG)
• Return Connection Wire Sizes: Solid: 0.2 to 4.0 mm² / Stranded: 0.2 to 2.5 mm² (24 to 12 AWG)
• Recommended Terminal Screw Torque: 0.5 to 0.6 Nm
• Ingress Protection Rating: IP20 (IEC 60529 Compliant)
• Conformal Coating: Factory standard protection for harsh environment reliability
• Mounting Style: Horizontal or Vertical 35 mm DIN Rail
• Physical Dimensions: 20.4 cm x 5.6 cm x 4.7 cm
• Product Net Weight: 0.32 kg

Installation Notes

• Snap the TU837V1 MTU firmly onto the cabinet DIN rail until the rear locking mechanism fully engages.
• Ensure the integrated grounding clip makes solid, paint-free contact with the metallic rail to guarantee reliable noise rejection.
• Set the mechanical keying wheels on the MTU face to exactly match the designated keying profile of the target S800 I/O module before slotting the electronics in.
• Terminate field lines using correct wire strip lengths (8 mm for signal, 7 mm for return connections) and tighten screws to the recommended 0.5–0.6 Nm torque threshold.