B&R 0TB1108.8110 8-Pin Cage Clamp Accessory Terminal Block

Technical Overview

The B&R 0TB1108.8110 (0TB1108.8110) is a heavy-duty, 8-pin industrial accessory terminal block engineered for secure signal and low-voltage power distribution in high-vibration automation environments. Developed for seamless deployment alongside ACOPOSmicro motion control systems, X2X Keypad Modules, and Automation PC 3100 series platforms, this high-integrity connector eliminates contact intermittency and structural detachment to safeguard plants against unexpected system dropouts. Utilizing advanced cage clamp (Federzugklemme) technology paired with an integrated side screw flange, the terminal block ensures a continuous, maintenance-free, gas-tight mechanical connection. The hardware handles conductor cross-sections up to 1.5 mm² and carries a full UL certification for 300 V industrial applications, delivering optimal conductivity across demanding multi-axis drives and processing lines.

Technical Configuration

The structural and mechanical composition of this connector is optimized for rapid cabinet assembly and long-term contact reliability:

• Cage Clamp Mechanism: Replaces traditional screw-down terminals with a spring-loaded tension clamp, applying constant dynamic pressure against the conductor to compensate for wire settling and thermal expansion.

• Integrated Screw Flange: The specialized "8110" design variant incorporates heavy-duty side mounting screws that bolt the terminal block directly to the host module chassis, preventing accidental extraction due to severe mechanical shock.

• Standardized 3.5 mm Pitch: Pin spacing complies precisely with standard high-density industrial control interfaces, maintaining strict creepage and clearance distances between adjacent electrical paths.

• Copper Optimization: The internal terminal contacts are metallurgy-matched exclusively for solid or stranded copper conductors, maintaining a constant 10 A current rating per contact.

Technical Specifications

Functional Equivalents and Variations

• 0TB1104.8100: A compact 4-pin variant utilized primarily for dedicated Emergency Stop (E-stop) loops or localized low-amperage auxiliary DC power distribution.

• 0TB1110.8110: An expanded 10-pin version sharing identical cage clamp and screw flange characteristics for higher density I/O routing.

• 0TB1108.9000: An 8-pin structural equivalent that features legacy screw-type clamp terminals instead of the modern vibration-resistant spring cage clamps.

Field Engineering and Installation Directives

TERMINATION CRITERIA: Never use a damaged or deformed screwdriver to actuate the cage clamps. Insert a standard 2.5 mm flat-head screwdriver straight into the actuation slot to open the internal spring blade completely before pushing the copper wire into the terminal block.

Conductor Preparation and Insertion Guide

When utilizing fine-stranded or flexible copper wires, technicians must crimp insulated wire-end sleeves (ferrules) onto the stripped wire ends. Ensure the combined cross-section of the wire and ferrule does not exceed the maximum 1.5 mm² (14 AWG) physical limit. Strip the wire insulation precisely to the manufacturer-specified length of 7 mm to prevent exposed bare copper conductors or insulation clamping faults.

Mechanical Flange Torque Requirements

After seating the terminal block firmly into the male header interface of the ACOPOSmicro drive or Automation PC, hand-tighten the two integrated side flange screws using a crosswise sequence. Torque both side screws to exactly 0.22 Nm. Overtightening will strip the internal plastic threads of the host module housing, while undertightening compromises the vibration-damping capabilities of the assembly.