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B&R 0TB112.91 Terminal Block

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B&R 0TB112.91 Terminal Block
May 27, 2026

B&R 0TB112.91 Terminal Block

The B&R 0TB112.91 is a 2×6‑pin dual‑row cage‑clamp terminal block designed for compact and reliable field wiring in industrial automation. With a 3.5 mm pitch and space‑saving dual‑row layout, it enables high‑density connection of signals and power in control cabinets. The tool‑operated cage‑clamp system ensures fast, consistent, and vibration‑resistant terminations. As a dedicated accessory for B&R I/O modules and control systems, it supports efficient wiring for digital/analog signals and low‑power circuits.

Description

B&R 0TB112.91 Terminal Block

Product Introduction

The B&R 0TB112.91 is a 2×6‑pin dual‑row cage‑clamp terminal block designed for compact and reliable field wiring in industrial automation. With a 3.5 mm pitch and space‑saving dual‑row layout, it enables high‑density connection of signals and power in control cabinets. The tool‑operated cage‑clamp system ensures fast, consistent, and vibration‑resistant terminations. As a dedicated accessory for B&R I/O modules and control systems, it supports efficient wiring for digital/analog signals and low‑power circuits.

Basic Information

  • Model: 0TB112.91

  • Brand: B&R (Bernecker + Rainer, ABB Group)

  • Product Type: Industrial cage‑clamp terminal block

  • Number of Pins: 12 (2×6 pins, dual‑row)

  • Connection Type: Cage clamp (tool‑operated)

  • Pitch: 3.5 mm

  • Wire Cross‑Section: 0.2–1.0 mm² (stranded with ferrule); 26–14 AWG (solid/stranded copper)

  • Rated Voltage: 300 VAC/VDC (UL)

  • Rated Current: 10 A per contact

  • Housing Material: High‑strength thermoplastic

  • Protection Class: IP20

  • Operating Temperature: -25°C to +70°C

  • Certifications: CE, UL/cULus compliant

  • Origin: Imported (Austria)

  • Features: Dual‑row high‑density design, touch‑safe, vibration‑resistant

Function and Positioning

The 0TB112.91 acts as a high‑density wiring interface for B&R X20/X67 I/O modules, PLCs, and related automation devices. It provides secure, maintenance‑free electrical connections for digital inputs/outputs, analog signals, and 24 VDC power distribution. The cage‑clamp mechanism maintains stable contact force, preventing loosening from vibration or thermal cycling. It enables quick assembly and disassembly, reducing on‑site wiring time and maintenance costs. Positioned as a compact, cost‑effective, and reliable connection solution, it ensures signal integrity and system stability in standard and space‑constrained industrial applications.

Core Performance Parameters

  • Connection System: Cage clamp, tool‑operated (flat‑blade screwdriver)

  • Conductor Type: Copper only (solid, stranded, fine‑stranded; no aluminum)

  • Rated Voltage: 300 VAC/VDC (max)

  • Rated Current: 10 A per contact, 120 A total

  • Contact Resistance: ≤4.2 mΩ (initial)

  • Dielectric Strength: 2 kV AC (1 minute)

  • Vibration Resistance: Compliant with EN 60068‑2‑6

  • Wiring Torque: 0.4–0.5 Nm (max for clamp screws)

  • Durability: ≥50 insertion/removal cycles

  • Safety: Touch‑safe, no exposed live parts

  • Compatibility: Matches B&R X20/X67 I/O module footprints

General Compatible Accessories

  • B&R X20/X67 series I/O modules and PLCs

  • B&R 0TB series terminal blocks (0TB103.91, 0TB1108.8110, 0TB1112.8010)

  • B&R 24 VDC power supply modules (0PS105.1, 0AC913.93)

  • B&R power buffer modules (0PB020.1) and HMI panels

  • Standard 35 mm DIN rails and mounting hardware

  • Industrial signal cables and wire end sleeves (0.2–1.0 mm²)

  • Flat‑blade screwdrivers (3.5 mm) for cage‑clamp operation

  • EMC filters and surge protectors for signal circuits

  • B&R Automation Studio for system configuration and diagnostics

  • Labeling strips and cable markers for terminal identification

Applicable Equipment Fields

  • Industrial Control Cabinets: High‑density signal and power distribution for B&R I/O systems

  • Machine Building: Packaging, textile, printing, plastics, and general machinery

  • Process Automation: Food and beverage, pharmaceutical, water and wastewater treatment

  • Automotive: Assembly lines, robotic cells, and production auxiliary equipment

  • Motion Control: ACOPOS servo systems and motion control cabinets

  • Energy: Wind turbines, solar power systems, and power plant auxiliary controls

  • System Integration: Panel building, retrofit projects, and distributed automation

  • Industrial IoT: Edge computing nodes, remote monitoring units, and sensor networks


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