ABB TP857 3BSE030192R1 Module Termination Unit Baseplate

Product Overview

The TP857 (Part Number: 3BSE030192R1) is a specialized Module Termination Unit (MTU) baseplate designed for the BC810 CEX-Bus Interconnection Unit within the ABB Ability™ System 800xA. It provides the mechanical and electrical foundation for the BC810, supporting CEX-Bus segments and external 24 VDC power distribution. Designed for 35mm DIN-rail mounting, its robust housing ensures reliable grounding and signal integrity for extended controller backplanes.

Technical Specifications

• Manufacturer: ABB

• Type Designation: TP857

• Product ID: 3BSE030192R1

• Product Type: Module Termination Unit (Baseplate)

• Compatibility: Exclusively for BC810 Interconnection Units

• Supported CPUs: PM857, PM861A, PM862, PM863, PM864A, PM865, PM866, PM867, PM891

• Input Power: 24 VDC nominal (19.2 – 30 VDC range)

• Mounting: 35mm DIN Rail (Grounding via rail)

• Dimensions (Width): 60 mm

• Net Weight: 0.27 kg

• Operating Temp: 0°C to +55°C

• Hazardous Location: cULus Class 1, Zone 2 / AEx nA IIC T4

• Warranty: 12 Months

• Shipping Port: Shanghai, Xiamen

Typical Applications

• CEX-Bus Expansion: Serving as the base for BC810 units used to divide the CEX-Bus into isolated segments for high-availability setups.

• Redundant Control Systems: Connecting primary and backup AC 800M controllers in mission-critical process automation.

• System 800xA Infrastructure: Termination point for external power and high-speed communication cabling in industrial racks.

• Hot-Swap Support: Enabling maintenance and module replacement without interrupting live CEX-Bus traffic.