TB852 ABB RCU Link Terminator Module

ABB TB852 – Product Description & Technical Specifications
Product Description
The ABB TB852 is a modular CombiTac terminal interface unit, specifically designed for ABB automation systems such as the AC 500 series PLC and compact I/O modules. It serves as a standardized, quick-disconnect bridge between field sensor/actuator cables and pluggable electronic modules (e.g., DI/DO/AI/AO), greatly simplifying wiring, commissioning, maintenance, and module replacement processes. This unit features a compact, modular design, ensuring reliable signal conditioning and connection transfer, and is widely applied in industrial automation scenarios. With strong compatibility and stable performance, it seamlessly integrates with ABB’s pluggable electronic modules, providing essential support for efficient and reliable operation of industrial control systems.

Basic Information
Brand: ABB, a global leader in power and automation technologies.
Model: TB852 (order number: 3BSC950263R1), a terminal interface unit belonging to ABB’s CombiTac product series.
Product Type: CombiTac terminal interface unit, used as a signal conditioning and wiring transfer platform for industrial automation systems.
Weight: Approximately 0.5 kg, compact and lightweight for easy installation and integration.
Country of Origin: Sweden (original factory), manufactured in strict accordance with ABB’s global quality control standards.
HS Code: 85371091 (for reference), applicable to electrical control panels and related components with a voltage not exceeding 1,000 V.
Temperature Specifications
Operating Temperature: -20 °C to +70 °C, adapting to harsh industrial environments and ensuring stable performance.
Storage Temperature: -40 °C to +85 °C, suitable for long-term storage and transportation without affecting product performance.
Input Specifications
Power Input: 24V DC ±20%, power consumption ≤5W; power supply is dependent on the connected electronic modules, with anti-surge protection.
Input Channels: 16 channels, supporting both single-ended and differential input types, compatible with various field sensor signals.
Wiring Interface: Screw or spring clamp terminals for field-side connections, supporting wire cross-sections from 0.08 mm² to 2.5 mm².

Output Specifications
Output Channels: 16 channels, matching the input channels, for signal transfer to pluggable electronic modules.
Output Interface: Standard CombiTac pluggable connectors for system-side connection to ABB X-series or similar electronic modules.
Output Current: Up to 2A per channel, depending on the type of connected electronic module.
Key Features
• Modular CombiTac design, serving as a quick-disconnect bridge between field devices and electronic modules, simplifying maintenance and replacement.
• 16-channel configuration, supporting single-ended and differential signals, compatible with various ABB electronic modules.
• Compact structure, easy to install on standard 35mm DIN rails, facilitating cabinet space planning.
• Supports multiple wiring types (screw/spring clamp), compatible with different wire cross-sections for flexible field connection.
• High compatibility, seamlessly integrating with ABB AC 500 series PLC and compact I/O modules.
• Strong anti-interference ability and wide operating temperature range, adapting to harsh industrial working conditions.
• Equipped with clear labeling areas for easy channel identification and system documentation management.

interface
*Output method: rear output
*Fast Ethernet: 3 slots, each slot supports 8 ports, with optional optical and electrical options
*Gigabit Ethernet: Provides 4 1000Base SFP slots
*CONSOLE port: RS232 (RJ45)
*Alarm port: 5.08mm spacing 3-pin Phoenix wiring terminal, 250VAC/220VDC 2 A
cable
*Twisted pair cable: 100m
*Multimode fiber: 1310nm, 2km (100Mbps); 1310nm, 500m (gigabit)
*Single mode fiber: 1310nm, 0-40km; 1550nm, 0-80km
source
*Input voltage: 110-220VDC/VAC, redundant input
*Connection terminal: 5.08mm spacing 5-pin Phoenix wiring terminal
*Power:<40W
mechanical properties
*Case: Aluminum model with fanless design
*Protection level: IP30
*Installation method: 19 inch 1U rack type
*Shell size: 440 mm * 44.5 mm * 370 mm (W * H * D), as shown in the attached image
*Impact, vibration, and drop: meet the requirements of IEC61850-3 5.5 CM level
*Weight: approximately 4.3kg

*10 Mbps forwarding speed: 14881pps
*100Mbps forwarding speed: 148810pps
*Transmission method: storage and forwarding
*System exchange bandwidth: 1.6Gbps
*Cache size: 1Mbits
*MAC address table: 2K