1. Core Technical Parameters

Operating Supply：24 VDC

Terminal Quantity：16 channel screw terminals

Applicable I/O Slot：S800 compact single slot

Allowable Wire Size：0.5–2.5 mm² solid cable

Isolation Test Voltage：2000 VAC

Ambient Temperature Range：-20℃ ~ +70℃

Mounting Mode：DIN rail TS35 + S800 backplane lock structure

2. Compatibility & Expandability

Same-brand Compatibility

ABB TU818V1 is a compact terminal base designed for ABB S800 series digital I/O modules. Field wiring technicians install multiple ABB TU818V1 on DSBB backplanes to centralize field sensor and actuator wiring inside control cabinets. ABB TU818V1 locks securely under matched DI/DO modules and transfers 24V field signals without intermediate junction terminal strips. Precision mechanical locking ensures long-term reliable contact when ABB TU818V1 works with all ABB AC800M system I/O hardware on production sites.

Cross-brand Compatibility

Unique S800 backplane buckle structure prevents direct installation of ABB TU818V1 on non-ABB PLC racks. Auxiliary transition terminal adapters are required to connect ABB TU818V1 to Siemens and Schneider I/O equipment. Standard screw wiring design allows ABB TU818V1 to access universal third-party 24V field instruments without internal structural modification.

3. Lifecycle Cost Analysis

Service cycle of ABB TU818V1 is fixed at 10 years, exchange rate:1USD=7.2CNY, purchase and installation fees are excluded from all cost accounting

Annual routine maintenance cost: Terminal torque inspection and dust removal for ABB TU818V1 costs 17 USD per year, total 10-year maintenance expense: 170 USD

Spare part replacement cost: Spring terminal fatigue failure of ABB TU818V1 generally happens once every 9 years, single spare terminal base price: 182 USD, total replacement expense within 10 years: 182 USD

Retrofit expense saving: Existing field signal cables fully fit ABB TU818V1 during cabinet reconstruction projects, saving 116 USD extra wiring labor cost compared with mismatched alternative terminal units

Total cumulative operating cost for single ABB TU818V1 over its 10-year service span: 236 USD