B&R 0TB103.91 Terminal Block

Product Overview

Brand: B&R (Bernecker & Rainer)
Model: 0TB103.91
Product Type: 3-Pin Power Terminal Block
Function: The B&R 0TB103.91 is a 24VDC power supply connector terminal block used with B&R Automation PC, Panel PC, and Automation Panel systems. It provides a secure connection between the external power supply and the device. It uses a cage clamp terminal design for fast and reliable wiring.

Technical Specifications

General Data

• Brand: B&R
• Model: 0TB103.91
• Type: Power Terminal Block
• Terminal Design: Cage Clamp Terminal Block
• Number of Pins: 3-pin female
• Application: 24VDC power connection
• Pitch: 5.08 mm
• Protection: Vibration-resistant design
• Wire Material: Copper wire only

Electrical Specifications

• Rated Voltage: 150 V
• Rated Current: 15 A per contact
• Contact Resistance: ≤5 mΩ
• Pollution Degree: 2 (EN 61131-2)

Wiring Specifications

• Terminal Type: Cage clamp connection
• Wire Range:
  • AWG: 26–12 AWG
  • Single wire: 0.20–2.50 mm²
  • Fine stranded wire: 0.20–2.50 mm²
  • Wire ferrule: 0.20–1.50 mm²
• Cable Type: Copper conductor only

Compatible Equipment

Commonly used with:

• B&R Automation Panel systems
• B&R Automation PC systems
• B&R Panel PC systems
• Industrial control terminals requiring 24VDC power input

Advantages & Features

Reliable Power Connection

Provides a stable 24VDC power connection for B&R industrial devices, ensuring continuous system operation.

Tool-Free Cage Clamp Design

The cage clamp structure allows fast wiring installation without screw tightening, improving maintenance efficiency.

Strong Vibration Resistance

Designed for industrial environments where equipment may experience vibration and mechanical stress.

Compact Space-Saving Design

The small 3-pin structure helps reduce control cabinet wiring space.

Low Contact Resistance

Ensures efficient power transmission with minimal electrical loss.

Easy Replacement

Designed as an original B&R accessory for quick installation and replacement.

Typical Applications

• Industrial automation systems
• Machine control cabinets
• HMI operator panels
• Industrial PCs
• Factory automation equipment
• Production line control systems
• Robotics and motion control systems

Precautions

• Confirm compatibility with the specific B&R device before installation.
• Use copper wires only; aluminum wires are not supported.
• Check correct polarity of 24VDC power connection.
• Do not exceed the rated current of 15A per contact.
• Ensure wires are properly inserted into the cage clamp terminals.
• Disconnect power before installation or replacement.
• Check terminal connection stability after wiring.