B&R X20TB12 Terminal Block Module

Product Overview

Brand: B&R (Bernecker & Rainer)
Series: X20 System
Model: X20TB12
Product Type: Terminal Block Module
Function: The B&R X20TB12 is a 12-pin push-in terminal block designed for B&R X20 I/O modules. It provides field wiring connections for 24VDC X20 modules, allowing sensors, actuators, and external devices to be connected to the automation system.

Technical Specifications

General Data

• Brand: B&R
• Model: X20TB12
• Series: X20 I/O System
• Module Type: Terminal Block
• Number of Pins: 12
• Terminal Type: Push-in terminal
• Keying Type: 24VDC keyed
• Installation: X20 modular I/O system
• Protection Rating: IP20
• Mounting Pitch: 12.5 mm

Electrical Specifications

• Rated Voltage: 240 VAC / 48 VDC
• Maximum Voltage: 300 VAC / 60 VDC
• Rated Current: 10 A per contact
• Contact Resistance: ≤5 mΩ

Wiring Specifications

• Connection Technology: Tool-free push-in wiring
• Supported Wire Type: Copper wire only
• Wire Size:
  • Single wire: 0.08–2.50 mm² (28–14 AWG)
  • Fine stranded wire: 0.25–2.50 mm² (24–14 AWG)
  • With ferrule: 0.25–1.50 mm² (24–16 AWG)
  • Double ferrule: Up to 2 × 0.75 mm²
• Wire Stripping Length: 7–9 mm
• Contact Spacing:
  • Horizontal: 4.2 mm
  • Vertical: 10.96 mm

Features & Advantages

Tool-Free Push-In Connection

Supports quick wiring without special tools, reducing installation time and improving maintenance efficiency.

Reliable Electrical Connection

Provides low contact resistance and stable signal transmission for industrial automation applications.

Compact X20 Modular Design

Designed for B&R X20 I/O modules with a compact footprint, helping save control cabinet space.

Easy Identification

Supports terminal labeling and plain text marking for simplified wiring management.

Easy Maintenance

Lever-based wire release makes replacement and troubleshooting faster.

Wide Compatibility

Used with various B&R X20 24VDC I/O modules, including digital and analog I/O modules.

Typical Applications

• B&R X20 PLC systems
• Industrial automation cabinets
• Machine control systems
• Factory production lines
• Packaging machinery
• Robotics systems
• Sensor and actuator wiring
• Distributed I/O stations

Compatible Applications

The X20TB12 is commonly used with:

• X20 digital input modules
• X20 digital output modules
• X20 analog I/O modules
• X20 communication modules
• X20 remote I/O stations

For example, some X20 I/O modules require one X20TB12 terminal block and one X20BM11 bus module separately for complete installation.

Precautions

• Confirm compatibility with the specific B&R X20 I/O module before installation.
• Use copper wires only; aluminum wires are not supported.
• Ensure correct wire stripping length before insertion.
• Check terminal assignment carefully before powering on.
• Do not exceed the rated current of 10A per contact.
• Disconnect system power before replacing the terminal block.
• Ensure proper locking and positioning on the X20 module.