ABB TB807 Modulebus Terminator 3BSE008538R1 for S800 I/O Systems

Product Overview

When Modulebus signal integrity is critical in your S800 I/O system, the ABB TB807 provides reliable passive termination. This compact unit, part number 3BSE008538R1, ensures proper line termination to prevent reflections and data errors on the Modulebus. As a maintenance engineer, you need components that simplify troubleshooting and reduce downtime — the TB807 delivers exactly that with its straightforward design and robust environmental ratings.

Technical Specifications

The TB807 is built for harsh industrial environments. It operates from 0 to +55 °C and stores from -25 to +70 °C, with relative humidity of 5 to 95% non-condensing per IEC/EN 61131-2. Pollution degree is Degree 2 per IEC 60664-1, and corrosion protection meets ISA-S71.04 G3. The protection class is IP20 according to IEC 60529. Dimensions are 17 mm width, 13 mm depth, and 19 mm height, with a weight of just 10 g. CE marking is present, and electrical safety complies with IEC 61131-2, UL 61010-1, and UL 61010-2-201. Hazardous location approvals include Class I Division 2 cULus, Class I Zone 2 cULus, and ATEX Zone 2. Marine certifications cover ABS, BV, DNV, and LR. EMC meets EN 61000-6-4 and EN 61000-6-2. Overvoltage categories follow IEC/EN 60664-1, and equipment class is Class I per IEC 61140 (earth protected). RoHS compliance covers EU, UAE, and CN RoHS, and WEEE compliance follows Directive 2012/19/EU.

Industry Applications

In process industries like oil and gas, chemical, and power generation, the TB807 ensures reliable Modulebus termination for distributed I/O racks. Its ATEX Zone 2 and marine certifications make it suitable for offshore platforms and hazardous areas. For maintenance teams, this means fewer signal issues and faster commissioning. The compact 17 mm width saves cabinet space, allowing denser I/O layouts without compromising reliability.

Installation & Setup Guidance

Mount the TB807 at the end of the Modulebus segment to terminate the line. Secure it to the DIN rail using the S800 mechanics. No power supply is needed — it is a passive unit. Ensure proper grounding per Class I requirements. Verify that the Modulebus cable is correctly connected before powering the system. This straightforward installation reduces setup time and minimizes wiring errors.

Maintenance & Reliability

The TB807 requires no routine maintenance due to its passive design. However, periodically inspect the unit for physical damage or contamination. The IP20 protection means it should be installed in a clean, dry enclosure. Its wide operating temperature range and corrosion protection (G3) ensure long service life in demanding environments. From a cost perspective, investing in proper termination reduces downtime caused by communication faults, delivering strong ROI over the system lifetime.

Compatibility & Integration

The TB807 is designed for ABB S800 I/O systems and terminates the Modulebus. It works with all S800 I/O modules and bus interfaces. Ensure your system uses the correct Modulebus cable and that the terminator is placed at the physical end of the bus. For integration guidance, consult the S800 I/O system manual. BluePLC Industrial stocks the TB807 and can advise on compatibility with your existing setup.

Selection Guide & Purchasing Advice

Before ordering, verify that your system requires a Modulebus terminator. The TB807 is the standard passive terminator for S800 I/O. Check that your environmental conditions fall within the specified 0 to +55 °C operating range and that your installation meets IP20 requirements. BluePLC Industrial offers the TB807 with fast shipping and expert support. Contact us to confirm availability and lifecycle status before placing your order.