The ABB TU835V1 is an extended Module Termination Unit (MTU) designed for use with ABB I/O modules such as AI810, AI815, and AI845. It supports up to 8 I/O channels, each rated for a maximum of 2 A at 50 V. The MTU distributes ModuleBus signals and power to the I/O module and cascades them to the next MTU. It also handles address generation by shifting position signals to each connected I/O module.

Technical Specifications

General

• Article Number: 3BSE013236R1
• Type: Extended
• Mounting: DIN rail, both directions
• I/O Channels: 8 (2 terminals per channel)
• Single/Redundant I/O: Single
• Compatible Modules: AI810, AI815, AI845
• Process Connections: 16 total (8 signal + 8 power terminals)

Electrical

• Rated Voltage: Max 50 V
• Current per Channel: Max 2 A
• Total Process Connection Current: Max 8 A
• Dielectric Test Voltage: 500 V AC

Wiring

• Wire Sizes:
  • Solid: 0.2 – 4 mm²
  • Stranded: 0.2 – 2.5 mm² (24–12 AWG)
• Stripping Length: 7 mm
• Recommended Torque: 0.5 – 0.6 Nm

Mechanical

• Width: 126 mm (with connector), 120.5 mm (installed)
• Depth: 64 mm
• Height: 110 mm
• Weight: 0.26 kg (0.57 lbs)
• Mounting Temperature: Up to 55 ºC (131 ºF)

Environmental

• Operating Temperature: 0 to +55 ºC (32 to 131 ºF)
• Storage Temperature: -40 to +70 ºC (-40 to 158 ºF)
• Relative Humidity: 5% to 95%, non-condensing
• Pollution Degree: Degree 2 (IEC 60664-1)
• Corrosion Protection: ISA-S71.04 G3
• Max Ambient Temperature: 55 ºC
• Protection Class: IP20 (IEC 60529)

Certifications

• CE Marked: Yes
• Electrical Safety: EN/UL 61010-1, EN/UL 61010-2-201
• Hazardous Area Approvals:
  • Class 1 Div 2 (cULus)
  • Class 1 Zone 2 (cULus)
  • ATEX Zone 2
• Marine Certifications: ABS, BV, DNV-GL, LR
• EMC Standards: EN 61000-6-2, EN 61000-6-4
• Overvoltage Category: IEC/EN 60664-1, EN 50178
• Equipment Class: Class I (IEC 61140, earth protected)