ABB TU851 Redundant Module Termination Unit

Manufacturer: ABB

Product No.: TU851
Product Type: Redundant Module Termination Unit
Product Origin: USA
Weight: 0.22 kg

Product Description

The ABB TU851 is an extended module termination unit designed for S800 I/O systems. It supports up to 16 isolated I/O channels with ModuleBus distribution, offering reliable and flexible connectivity for industrial automation applications.

Key Features

• Supports up to 16 I/O channels with terminal block connections

• Distributes ModuleBus and assigns addresses via position signals

• DIN rail mounted with latching mechanism for secure grounding

• Mechanical keying prevents incorrect module insertion

• Dual mechanical keys enable 36 configuration options

Technical Specifications

• Type: Module Termination Unit (MTU)

• Channels: Up to 16

• Voltage Rating: Up to 250 V

• Current per Channel: Max. 3 A

• Wire Size Compatibility:

• Solid: 0.2–4 mm²

• Stranded: 0.2–4 mm² (24–10 AWG)

• Dielectric Withstand Voltage: 2000 V AC

• Mounting: Horizontal or vertical on DIN rail

• Operating Temperature: 0 to +55 °C

• Storage Temperature: -40 to +70 °C

• Humidity: 5–95% non-condensing

• Certifications: CE, UL, ABS, BV, DNV-GL, LR

• Protection Class: IP20

• Pollution Degree: IEC 60664-1, Degree 2

• EMC Compliance: EN 61000-6-4, EN 61000-6-2

• RoHS Compliant: Yes

Dimensions

• Width: 126 mm (with connector), 120.5 mm edge-to-edge

• Depth: 64 mm

• Height: 110 mm