Correction Notice: ABB TP857 (3BSE030192R1) Is NOT HMI Touch Panel

Product Overview

Many users misclassify TP857 as touch screen, while its actual identity is CEX-Bus backplane interconnect base unit for ABB AC800M / System 800xA DCS control rack, part number 3BSE030192R1. It is a DIN rail-mounted rack base component, matched with BC810 interconnect unit, responsible for CEX-Bus internal backplane signal transmission, power distribution and module gating inside DCS cabinets. It realizes data interconnection between CPU, communication modules and I/O stations, serving as the physical carrier for rack bus expansion, widely used in power plant, chemical, metallurgy DCS cabinet assembly, system renovation and emergency spare replacement. We supply 100% brand-new sealed genuine ABB TP857 base units with abundant spot inventory, fast global delivery and standard 12-month manufacturer warranty.
 

Core Technical Specifications

表格

Parameter Item	Standard Specification
Full Part Code	TP857 / 3BSE030192R1
Matching DCS Platform	ABB AC800M Controller, System 800xA, BC810 CEX-Bus Interconnect Unit
Bus Interface	CEX-Bus dedicated internal rack bus connector
Power Input	External 24VDC terminal L+/L-, built-in fuse and gating diode for power redundancy
Installation Method	35mm standard DIN rail snap mounting
Dimension	120mm(L) × 60mm(W) × 30mm(D)
Net Weight	Approx. 200g
Protection Grade	IP20 (only installed inside control cabinet)
Operating Temperature	0℃ ~ +55℃
Storage Temperature	-40℃ ~ +85℃
Humidity Resistance	5%–95% RH, non-condensing
Certifications	CE, UL, IEC61010 industrial EMC & safety standard

Core Advantages as DCS Rack Interconnect Base Component

1. Dedicated CEX-Bus Stable Signal Transmission

Exclusive CEX-Bus bus wiring architecture, high-speed real-time data transmission between rack CPU, communication cards and I/O modules, with built-in signal filtering circuit to suppress cabinet internal electromagnetic interference, avoiding bus communication disconnection, data packet loss and DCS control loop disorder caused by signal attenuation.

2. Built-In Power Gating & Short-Circuit Protection

Integrated power selection diodes and independent fuses, supporting dual power supply redundant switching. When single power supply fails, seamless switching without system downtime; short-circuit protection prevents local power fault from spreading to the whole rack, effectively protecting expensive CPU and I/O modules from burnout.

3. Compact DIN Rail Modular Design Saves Cabinet Space

Ultra-narrow 60mm single-width structure, occupies minimal cabinet installation space, flexible combined layout with BC810 interconnect unit. Standard DIN rail quick clamping mounting, no complicated fixing tools required, greatly shortening cabinet wiring and equipment replacement time.

4. Metal Shell Grounding & Strong Anti-Interference

Whole metal shell structural grounding via DIN rail, forming complete shielding loop against harmonic surge and high-frequency noise generated by medium voltage drives and heating furnaces in industrial workshops, guaranteeing long-term stable bus operation in high-noise harsh environments.

5. Industrial-Grade Hardware Long Service Life

All internal connectors and circuit components are ABB original industrial grade, each TP857 passes factory vibration, damp-heat cycle and continuous aging testing before delivery, with ultra-low long-term failure rate compared with generic imitation rack base plates, reducing regular DCS cabinet maintenance frequency.

Main Industrial DCS Application Scenarios

1. Thermal & Hydropower Plant DCS Cabinets: AC800M boiler/turbine control rack CEX-Bus backplane carrier, power redundant power distribution support
2. Chemical & Petrochemical Process Automation: Reactor, distillation tower central control cabinet internal bus interconnect base
3. Metallurgy Rolling Mill Automation: Medium voltage drive matching DCS control rack signal transmission base unit
4. Cement & Building Material Production DCS: Rotary kiln, preheater control cabinet rack expansion base
5. Water Treatment & Environmental Protection Automation: Sewage pump group centralized control cabinet internal bus connection component

Original In-Stock Supply & Global Fast Shipping Service

All ABB TP857 rack interconnect base units we provide are 100% genuine original factory products, complete with sealed original packaging and official factory performance test reports, covered by a formal 12-month warranty against manufacturing defects under rated standard operating conditions. Our warehouse maintains abundant permanent ready stock to rapidly fulfill urgent DCS cabinet maintenance orders and bulk procurement for global industrial EPC projects. We adopt professional anti-static, shockproof and moisture-proof dedicated export packaging to protect precision bus connectors during long-distance sea and air international transportation. We cooperate with mainstream global logistics carriers to deliver fast worldwide shipment covering Europe, North America, Southeast Asia, the Middle East and all major process industrial regions, with one-stop professional customs clearance coordination support. Our full supporting service includes pre-sales AC800M rack matching verification, CEX-Bus cabinet layout consultation, plus after-sales DIN rail installation wiring, bus communication debugging and complete DCS control system overall commissioning.
Selecting genuine original ABB TP857 CEX-Bus interconnect base unit delivers stable rack bus transmission and safe redundant power distribution guarantee for your ABB System 800xA DCS control systems. Consistent original ABB industrial quality eliminates bus communication failure and power short-circuit diffusion risks brought by counterfeit rack base components, effectively reducing unplanned DCS system shutdown frequency and long-term equipment maintenance costs. Supported by our ample in-stock inventory, efficient fast worldwide shipping and complete 12-month warranty protection, it is the trusted original rack base spare component choice for global ABB process automation DCS projects.

Supplementary Explanation

If you need ABB industrial touch HMI operator panels, corresponding series models are PP825, CP607, Panel 800 series touch screens, which are embedded man-machine display terminals, completely different from rack-mounted TP857 backplane base unit.