ControlLogix Extended Terminal Block Housing | 1756-TBE Allen-Bradley

Overview

The Allen-Bradley 1756-TBE is a deep terminal block housing engineered for ControlLogix systems requiring additional wiring space. As part of the Bulletin 1756 Removable Terminal Block Series, it accommodates heavy-gauge wires and allows efficient organization of high-density I/O connections. The extended depth design simplifies installation and maintenance in complex control panels.

Technical Specifications

• Manufacturer: Allen-Bradley

• Model Number: 1756-TBE

• Product Type: Terminal Block Housing

• Module Type: Extended-depth housing for removable terminal blocks

• Pins: 36-pin connection

• Backplane Current: 5 V DC: 1,200 mA typical, 24 V DC: 2.5 mA typical

• Maximum Power Dissipation: 6.19 W

• Wire Size Compatibility: 20 AWG standard

• Wire Capacity: Up to 628 sq.mm when combined with I/O terminal block

• Mounting Options: DIN-rail or panel mount with standard enclosure provisions

• Physical Dimensions (H × W × D): 14.0 × 11.2 × 14.5 cm (5.51 × 4.41 × 5.71 in)

• Weight: 0.1 kg (0.3 lb)

• Enclosure Type: Open-style housing (requires protective panel or enclosure)

Key Features

• Extended Wiring Space: Allows routing of larger cables and dense I/O configurations.

• Robust Electrical Isolation: Ensures safe separation between terminal block connections and controller backplane.

• Flexible Installation: Compatible with existing Bulletin 1756 I/O terminal blocks and CompactLogix racks.

• Compact Footprint: Deep design maximizes wire capacity while maintaining a manageable module size.

• Durable Construction: High-quality materials support repeated wiring and maintenance operations.

Application Scenarios

• ControlLogix panels requiring expanded wire routing for high-density I/O

• Industrial automation systems with heavy-gauge wiring needs

• Process control cabinets and distributed I/O configurations

• Systems requiring easy maintenance access and modular I/O replacements

FAQ

Q1: Can the 1756-TBE housing accommodate standard terminal blocks?
Yes. It is fully compatible with Bulletin 1756 Removable Terminal Blocks and extends wiring capacity.

Q2: What is the maximum wire gauge supported?
Supports up to 20 AWG standard wires; combined housing and terminal block can handle up to 628 sq.mm.

Q3: Is an external enclosure required?
Yes. The housing is open-style and should be mounted within a protective control panel or enclosure.