1. Core Technical Parameters

Rated Supply：24 VDC

Terminal Port Count：16 signal terminals

Applicable Module Series：S800 I/O dual slot unit

Permitted Cable Gauge：0.5–2.5 mm²

Dielectric Withstand Voltage：2500 VAC

Operating Temperature：-20℃ ~ +70℃

Fixing Structure：S800 backplane lock + DIN rail mount

2. Compatibility & Expandability

Same-brand Compatibility

ABB TB825 is dual-width terminal base customized for ABB S800 high-density I/O modules. On-site wiring technicians install multiple ABB TB825 on DSBB rack backplanes to centralize field sensor and actuator wiring inside industrial control cabinets. ABB TB825 locks firmly beneath dual-channel analog and digital I/O cards and transmits 24V field signals without intermediate transfer terminal strips. Mechanical buckle design maintains consistent circuit contact when ABB TB825 operates alongside all ABB AC800M series control hardware in factory workshops.

Cross-brand Compatibility

Exclusive dual-slot backplane buckle design prevents direct assembly of ABB TB825 onto third-party PLC racks. Auxiliary signal transition terminal blocks are mandatory to build wiring links connecting ABB TB825 with Siemens and Schneider I/O equipment. Standard screw wiring architecture allows ABB TB825 to access universal 24V field instruments manufactured by other brands without structural modification.

3. Lifecycle Cost Analysis

Service cycle of ABB TB825 is set to 10 years, exchange rate:1USD=7.2CNY, purchase and installation fees are excluded from all cost statistics

Annual routine maintenance cost: Terminal torque inspection and internal dust removal for ABB TB825 costs 19 USD per year, total 10-year maintenance expense: 190 USD

Spare part replacement cost: Spring terminal elastic fatigue failure of ABB TB825 generally appears once every 9 years, single spare terminal base price: 208 USD, total replacement expense within 10 years: 208 USD

Retrofit expense saving: Original field signal cables fully match ABB TB825 during cabinet upgrade reconstruction, saving 132 USD extra wiring labor cost compared with incompatible substitute terminal bases

Total cumulative running cost for single ABB TB825 across ten service years: 266 USD