May 27, 2026

B&R 0TB103.91 Power Terminal Block (Imported)

The B&R 0TB103.91 is an imported 3‑pin female power terminal block designed for stable and reliable 24 VDC power connection in industrial automation systems. Featuring a robust cage‑clamp connection system, it enables fast, tool‑assisted wiring with high resistance to vibration and loose contacts. As a key accessory for B&R PLCs, HMIs, power supplies and I/O modules, it ensures secure power distribution in control cabinets without maintenance requirements.

Description

B&R 0TB103.91 Power Terminal Block (Imported)

Product Introduction

Basic Information

Model: 0TB103.91
Brand: B&R (Bernecker + Rainer, ABB Group)
Product Type: Imported industrial power terminal block
Pin Configuration: 3‑pin female (24 VDC power)
Connection Type: Cage clamp (tool‑operated)
Pitch: 5.08 mm
Wire Cross‑Section: 0.2–2.5 mm² solid/fine‑stranded copper; 26–12 AWG
Rated Voltage: 150 V (system), 24 VDC (application)
Rated Current: 15 A per contact
Contact Resistance: ≤5 mΩ
Housing Material: High‑strength thermoplastic, black
Protection Class: IP20
Operating Temperature: -25°C to +70°C
Storage Temperature: -25°C to +85°C
Humidity: 5%–95%, non‑condensing
Certifications: CE, UL/cULus, HazLoc, DNV GL, EAC
Origin: Imported (Austria)
Features: Vibration‑resistant screw flange, tool‑only operation

Function and Positioning

The 0TB103.91 serves as a dedicated power interface for B&R automation devices, providing safe, durable and efficient 24 VDC power connection between power supplies and loads. Its cage‑clamp design ensures consistent contact force, preventing loosening caused by vibration or temperature changes in industrial environments. It supports quick assembly and disassembly, reducing wiring time and maintenance costs. Positioned as a high‑reliability connection accessory, it matches B&R’s power supply modules, PLCs and HMIs perfectly, ensuring stable power supply for critical control components.

Core Performance Parameters

Connection System: Cage clamp, tool‑operated (screwdriver)
Conductor Type: Copper only (solid, stranded, fine‑stranded)
Rated Voltage: 150 VAC/VDC (max), 24 VDC (nominal)
Rated Current: 15 A per contact, 45 A total
Dielectric Strength: 2 kV AC (1 minute)
Vibration Resistance: Compliant with EN 60068‑2‑6, 0.7 g
Contact Resistance: ≤5 mΩ (initial), ≤8 mΩ (after vibration)
Wiring Torque: 0.5 Nm (max for mounting screws)
Durability: ≥500 insertion/removal cycles
Safety: Touch‑safe design, no exposed live parts
Compatibility: Matches B&R 0TB103.9 series footprint

General Compatible Accessories

B&R 24 VDC power supply modules (0PS105.1, 0AC913.93)
B&R X20/2005 series PLCs, I/O modules and bus bases
B&R HMI panels (0AC916.9) and industrial PCs
B&R power buffer modules (0PB020.1)
Standard 35 mm DIN rails and mounting hardware
Industrial 24 VDC distribution terminal blocks and cables
Screwdrivers for cage‑clamp operation (standard flat‑blade)
Wire end sleeves (0.2–2.5 mm²) for stranded wires
EMC filters and surge protectors for 24 VDC circuits
B&R Automation Studio for system integration

Applicable Equipment Fields

Industrial Control Cabinets: Power distribution for B&R and multi‑vendor 24 VDC systems
Machine Building: Packaging, textile, printing, plastics and general machinery
Process Automation: Food and beverage, pharmaceutical, water treatment
Automotive: Assembly lines, robotic cells and production equipment
Motion Control: ACOPOS servo systems and motion control cabinets
Energy: Wind turbines, solar inverters and power plant auxiliary controls
System Integration: Panel building, retrofitting and distributed automation
Industrial IoT: Edge computing nodes, remote monitoring units and sensor networks

Contact Info