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ABB TU811 Complete Kit S800 I/O Standard Screw Terminal Base

ABB TU811 complete kit is a dedicated standard screw terminal base solution customized for ABB S800 modular I/O systems, covering all mounting and wiring auxiliary accessories required for cabinet deployment. The core TU811 terminal base adopts V0 flame-retardant reinforced engineering plastic housing, with an internal miniaturized shielding PCB integrating internal bus power distribution circuits, M3 screw wiring terminals and multi-stage anti-interference filter modules.

This base unit achieves secure mechanical locking and stable electrical docking with a single S800 analog or digital I/O module through standardized gold-plated backplane bus contacts. Gold plating effectively prevents oxidation and poor contact caused by long-term continuous operation, vibration and humidity changes. The front panel is equipped with high-torque M3 screw terminals, supporting firm connection of 0.5–2.5 mm² solid and stranded field cables, suitable for heavy industrial wiring scenarios that require high tensile strength and anti-loose performance. Separated signal ground and power ground layout eliminates ground loop signal drift and distortion generated by long-distance field sensor wiring.

Each independent wiring channel integrates built-in TVS transient surge suppressors and RC passive low-pass filters, which effectively suppress various interference signals including frequency converter switching noise, motor operation transients and induced lightning surges, ensuring high-precision analog sampling and stable digital interlock logic execution. The DIN rail quick-clamp modular design allows independent disassembly of the base unit, enabling hot-swap replacement of matched S800 I/O modules without shutting down the whole I/O rack, greatly minimizing production downtime during equipment fault maintenance.

TU811 maintains full compatibility with mainstream S800 I/O modules such as AI810, AO810, DI810, DO810, AI830 and AO830, perfectly matching System 800xA and AC800M industrial control platforms. The complete kit contains original TU811 terminal base, full sets of M3 terminal screws, cable routing guides, DIN rail elastic fixing buckles and printed official installation & maintenance manual, ready for direct cabinet DIN rail installation without purchasing additional wiring adapters or transfer terminal blocks.

TU811

Complete Technical Parameters:

Mechanical & Wiring Performance

Matching Scope: Single standard S800 series analog / digital I/O module
Terminal Type: High-torque M3 screw terminal
Applicable Wire Gauge: 0.5 ~ 2.5 mm² solid / stranded field cables
Single Channel Rated Load: 10A, insulation voltage rating 250V AC
Mechanical Lock Structure: Elastic anti-vibration buckle locking design
Ground Layout: Independent separated signal ground & power ground to avoid ground loop interference

Electrical & Anti-Interference Specifications

Internal Bus Interface: Gold-plated multi-point backplane contacts for S800 bus communication
Per-Channel Protection: TVS surge suppression diode + RC passive low-pass filter
Insulation Withstand Voltage: 2000V AC between signal circuit and plastic housing ground
EMC Compliance Standard: IEC 61000-6-2 heavy industrial anti-interference standard
Bus Power Transmission: Supports 24V DC auxiliary power supply for mounted I/O modules

Mechanical & Environmental Specifications

Mounting Method: Standard 35mm DIN rail clip-on quick installation
Overall Dimensions: 123mm × 70mm × 56mm
Single Base Net Weight: 0.17kg; Full Kit Total Weight: 0.33kg
Continuous Stable Operating Temperature: -20℃ ~ +65℃
Storage Temperature Range: -40℃ ~ +85℃
Ambient Humidity Condition: 5% ~ 95% non-condensing
Shell Raw Material: V0 grade flame-retardant reinforced engineering plastic
Cabinet Protection Grade: IP20 under fully installed state
Safety Certifications: CE, UL, RoHS certified
Industrial MTBF: ≥120,000 hours long-term reliability rating

Compatible Equipment & Matching Software

Supported S800 I/O Modules: AI810, AO810, DI810, DO810, AI830, AO830 and all universal single-slot S800 I/O cards
Upper Control Platform: ABB AC800M PLC, System 800xA integrated DCS system
Official Configuration & Diagnostic Software: ABB Control Builder M PC tool
Rack Compatibility: Standard S800 8-slot / 16-slot I/O mounting racks

TU811

Main Features & Competitive Advantages:

Core Features

Classic M3 screw terminal design, high tensile strength and anti-loose wiring for heavy industrial field cables
Universal single-slot terminal base fully compatible with all mainstream S800 analog and digital I/O modules
Separated dual ground layout structure, effectively eliminate ground loop signal drift and distortion
Per-channel integrated surge suppression and filtering circuits, excellent anti-electromagnetic interference capability
Gold-plated backplane bus contacts, anti-oxidation and anti-vibration to ensure long-term stable electrical connection
DIN rail modular clip-on structure, support hot-swap replacement of matched I/O modules without rack power outage
V0 flame-retardant plastic housing, meet high safety standards for high-temperature power and chemical control cabinets
Compact integrated layout design, save internal space of crowded DCS control cabinets
Every unit passes factory electrical continuity and high-voltage insulation test to eliminate hidden contact faults
Standard universal OEM spare part, fully plug-and-play interchangeable with all batches of TU811 terminal bases

Key Advantages

All-in-one Complete Kit: Equipped with full terminal screws, cable guides and fixing buckles, one-stop procurement reduces accessory matching workload
Ultra-Stable Wiring Reliability: Screw terminals avoid loose wiring risks caused by long-term equipment vibration, suitable for mining and metallurgy heavy industry
High Precision Signal Transmission: Multi-layer passive anti-interference design ensures accurate analog and digital signals under severe industrial EMI environments
Low Maintenance Cost: No internal consumable components, only simple visual inspection required during routine maintenance cycles
Ultra-Wide System Compatibility: Matches full S800 I/O product line and System 800xA DCS, ideal for old DCS cabinet upgrade and replacement projects
Harsh Environment Adaptability: Wide temperature operating range and flame-retardant shell adapt to power stations, chemical plants, steel mills and offshore control sites
Global Export Qualified: CE & UL safety certification, meets automation engineering standards for all overseas regions
Mature Stable Structure: Mass-produced classic terminal base with long on-site service verification, low failure rate

Application Fields:

Power Generation DCS Control Systems

Thermal power plant System 800xA boiler and turbine auxiliary parameter acquisition I/O rack
Hydropower station water level, flow and temperature sensor signal wiring terminal base
Biomass and gas turbine distributed power station S800 I/O cabinet spare replacement

Chemical & Petrochemical Industry

Refinery reactor pressure, temperature analog sensor signal terminal mounting unit
Chemical pipeline pump, valve digital interlock control S800 wiring base
High-temperature anti-flame control cabinet heavy-duty wiring terminal base

Metallurgy & Heavy Mining Industry

Steel rolling mill fan, water pump frequency conversion signal collection DCS terminal base
Underground mine ventilation and mineral conveying equipment digital signal wiring unit

Offshore & Oil & Gas Engineering

Offshore drilling platform process control System 800xA I/O terminal base
Coastal oil and gas processing plant anti-humidity heavy cable wiring terminal unit

Environmental Protection & Water Treatment

Sewage treatment plant pH, dissolved oxygen analog sensor wiring base
Waste incineration furnace flue gas monitoring S800 I/O terminal mounting unit

Automation Retrofit & Renovation Projects

Direct replacement of aging screw-type terminal bases in old ABB S800 I/O racks
Upgrade of scattered discrete terminal blocks to standardized TU811 integrated wiring layout

FAQ:

Q1: What accessories are included in the ABB TU811 full complete set?

A1: The full kit includes original TU811 screw terminal base unit, complete M3 terminal screw fittings, cable routing guides, DIN rail elastic fixing buckles and printed official installation & operation manual, all accessories ready for direct DIN rail cabinet installation.

Q2: Which S800 I/O modules can TU811 match with?

A2: It is a universal single-slot screw terminal base compatible with all mainstream S800 series analog and digital I/O modules, including AI810, AO810, DI810, DO810, AI830, AO830 and other standard single-card I/O products under System 800xA DCS.

Q3: Does TU811 support hot swap of mounted S800 I/O modules?

A3: Yes, the modular DIN rail structure enables hot plug replacement of matched S800 I/O modules, without cutting off the whole I/O rack power supply to avoid full system shutdown.

Q4: What wire specifications are suitable for TU811 M3 screw terminals?

A4: The M3 screw terminals support 0.5mm² ~ 2.5mm² solid or stranded field cables, covering most standard heavy-duty industrial sensor and actuator wiring requirements.

Q5: Does TU811 integrate anti-interference and surge protection circuits?

A5: Each independent signal channel is equipped with TVS transient surge suppression diodes and RC low-pass filters, effectively eliminate frequency converter harmonics, lightning surges and motor switching interference signals.

Q6: What installation method does TU811 adopt?

A6: Standard 35mm DIN rail clip-on installation with elastic quick-lock buckle, convenient disassembly and maintenance inside all standard DCS control cabinets.

Q7: What software is used for configuration and diagnosis of System 800xA matched with TU811?

A7: Official ABB Control Builder M PC configuration software, supporting I/O module address assignment, channel parameter setting and rack online fault diagnosis monitoring.

Q8: What is the continuous stable operating temperature range of TU811?

A8: Continuous stable operating temperature range: -20℃ ~ +65℃; storage temperature range: -40℃ ~ +85℃, adapting to various temperature environments of industrial control cabinets.

Q9: Is the TU811 housing flame retardant?

A9: The shell is made of V0 grade flame-retardant reinforced plastic, satisfying high safety standards for high-temperature control cabinets in chemical plants and power stations.

Q10: Can TU811 directly replace old batches of the same model terminal base?

A10: 100% plug-and-play interchangeable. TU811 is unified factory standard version, no wiring adjustment or DCS rack program modification required during replacement.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

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To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

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We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.