ABB TU810V1 (3BSE018332R1) – S800 I/O Module Termination Unit for reliable field wiring

The ABB TU810V1 is a Module Termination Unit (MTU) designed for the S800 I/O family. From my experience, this is the piece that makes field wiring tidy and serviceable—your I/O module plugs into the TU810V1, while all the plant signals land on the terminal side. You might notice that this setup lets you replace an I/O module without disturbing field cables, which in many cases saves hours of downtime on maintenance days.

Company’s Order Placement Process and Guarantees

Key Features

• Purpose-built for ABB S800 I/O – Serves as the field termination base for analog and digital S800 modules, keeping wiring organized.
• Field wiring stays put during module swaps – Typically you can replace the I/O module without touching the terminal side, reducing risk and turnaround time.
• DIN-rail mounting – Snaps onto standard 35 mm DIN rail, making cabinet layout straightforward.
• HART pass-through supported – When paired with HART-capable S800 AI/AO modules, diagnostics and device data can pass through the I/O stack.
• Clear segregation of system and field sides – Eases troubleshooting and helps with safer lock-out/tag-out practices in most cases.
• Proven in process industries – Common in refining, chemicals, water, and power applications where S800 I/O is standard.

Technical Specifications

Related or Supporting Products

• AI810 / AI815 (Analog Input) – Pair with TU810V1 for process inputs; HART diagnostics available on HART-capable variants.
• AO810 (Analog Output) – Works with TU810V1 for control outputs such as valve positioners; HART pass-through when applicable.
• DI810 / DI814 (Digital Input) – Typical on/off field signals; TU810V1 provides orderly termination and easy module servicing.
• DO810 / DO814 (Digital Output) – Drives solenoids and relays; TU810V1 keeps field side organized for maintenance.
• Alternative MTUs: TU812V1 / TU814V1 / TU830V1 – Similar function with differences in terminal style, channel allocation, or field power distribution. Selection usually depends on wiring practice and module mix.

One thing I appreciate is how consistent the S800 family is—if your cabinet standard already uses TU8xx bases, TU810V1 drops in smoothly. A maintenance lead at a water treatment site told us they shaved module swap time down to minutes because the field side stays undisturbed.

Installation & Maintenance

• Cabinet and mounting – Install on 35 mm DIN rail in a clean, ventilated control cabinet. Allow space above/below for airflow and service access.
• Wiring practice – Use properly sized conductors and ferrules. Keep analog, digital, and high-voltage runs segregated. Terminate shields per site grounding policy to reduce noise.
• Power and de-energizing – Before inserting/removing the I/O module, de-energize the affected circuit. Follow plant LOTO procedures.
• ESD handling – Handle the I/O module with ESD protection; the MTU provides the mechanical/base interface.
• Routine checks – Periodically verify terminal tightness/retention, inspect for discoloration or debris, and clean dust with dry air. Firmware updates apply to the I/O module only, not the TU810V1.

Quality & Certifications

• Typically compliant with CE and RoHS for industrial control equipment.
• Manufacturer quality system: ISO 9001.
• UL/cUL recognition is common for S800 family components in North American panels.
• Standard manufacturer warranty practices apply; we provide a 365-day warranty on supply.