ABB TB521-ARCNET AC500 Terminal Base
The ABB TB521-ARCNET is a robust terminal base designed for AC500 V2 PLC systems, featuring two communication module slots, ARCNET connectivity, and dual RS232/RS485 serial interfaces. Ideal for complex automation networks requiring high reliability and legacy protocol support.
Technical Specifications
Manufacturer: ABB
Product Name: TB521-ARCNET ABB
Product ID: 3ABD00029560
Platform: AC500 V2
Function: Terminal base with ARCNET and 2x RS232/RS485 interfaces
Communication Slots: 2 slots for communication modules
Communication Interface: D-SUB / Coax / Terminals
Supply Voltage: 24 V DC
Degree of Protection: IP20
Mechanical Dimensions
Net Weight: 0.187 kg
Gross Weight: 0.246 kg
Product Dimensions (L x W x H): 28 mm x 123.5 mm x 135 mm
Package Dimensions (L x W x H): 147 mm x 131 mm x 40 mm
Environmental & Compliance
Operating Temperature: 0 … +60 °C
Storage Temperature: -40 … +70 °C
RoHS: Compliant – EU Directive 2011/65/EU & Amendment 2015/863
REACH: Compliant – Contains SVHC > 0.1%
SCIP Code: c171af37-8456-4dee-b15c-03da3448dd42
Declaration of Conformity: CE – 3ADR980140
Tariff Code (CN8): 85389091
WEEE Category: 5 – Small Equipment
Ordering Information
Invoice Description: Terminal base. For AC500 V2. 2 slots for communication module. ARCNET interface. 2 serial interfaces RS232/RS485
Minimum Order Quantity: 1 piece
Order Multiple: 1 piece
Selling Unit: Piece
Key Features
✅ 2 Comm Slots: Flexible communication expansion for AC500 V2 systems.
✅ ARCNET Interface: Legacy support for deterministic industrial protocols.
✅ Dual Serial Ports: RS232/RS485 for versatile PLC connectivity.
✅ DIN Rail Mounting: Compact and modular installation.
✅ Industrial Reliability: Designed for harsh operating environments.
📦 Buy ABB Terminal Bases – 2 Slot, ARCNET + Serial Interface
At Drive Outlet Megastore we offer unbeatable ABB TB521-ARCNET prices.
Whether you’re upgrading your automation network or integrating legacy ARCNET systems, the TB521-ARCNET is a high-performance terminal base solution for modern AC500 V2 PLC architectures.
Contact our team now for quotes, lead times, or technical advice.

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