ABB 3BSE018741R15 S800 I/O Module Termination Unit (TU831, Non-IS High-Density Variant)

Manufacturer: ABB

Product Type: S800 I/O Module Termination Unit (MTU)

Catalog Number: 3BSE018741R15 (based on TU831 platform)

Configuration: Non-intrinsically safe, high-density wiring

Compatible Modules: S800 non-IS versions including AI810, AO810, DI810, DO810, AI830, RTD810

Mechanical Keying: Dedicated TU831 R15 non-IS key, prevents insertion of incompatible module types

Terminal Type: Spring-clamp or screw-type depending on sub-variant

Field Wiring Capacity: Up to 16 channels in 1:1 configuration or 8 channels in 2:1 configuration

Isolation Between Field and Electronic Module: 500 V AC for 1 minute

Maximum Field Voltage: 250 V

Mounting: Standard S800 I/O DIN rail with mechanical latch for locking and grounding

Operating Temperature: 0 to +60 °C

Storage Temperature: -40 to +85 °C

Certifications: CE, UL marks; this variant is not ATEX or IECEx certified due to non-IS design

Mechanical keying physically prevents insertion of incorrect S800 module types, eliminating wiring and configuration errors during installation or maintenance. The high-density terminal arrangement maximizes I/O count per cabinet while maintaining clear separation and accessible wiring points.

Deployed in power plant auxiliary systems, water treatment plants, heating stations, and general-purpose industrial control panels where dense I/O population is required without intrinsic safety barriers. Suitable for cost-effective high-channel-count installations in non-hazardous indoor environments.

Verify the R15 keying matches the intended S800 electronic module before insertion. Connect field cables to the spring-clamp or screw terminals according to the wiring diagram for the specific channel density. Ensure shield grounding is done at the cabinet side per plant electrical standards. This TU831 variant must not be installed in hazardous (Ex) classified areas. The module address is automatically assigned by the physical position on the ModuleBus or set via the built-in address mechanism depending on system configuration.