Allen‑Bradley 1756‑TBCH ControlLogix 36‑Pin Removable Terminal Block

Allen‑Bradley 1756‑TBCH is a 36‑pin cage‑clamp removable terminal block (RTB) accessory for ControlLogix 1756 I/O modules. It is mounted on the front side of I/O modules, providing screw‑clamp wiring terminals for field sensors, actuators and signal cables, completing signal transition between field wiring and internal I/O electronic circuits.

This terminal block supports hot‑swap operation, I/O modules can be replaced without disconnecting field cables. It adopts standard housing structure, supports wire gauge 0.33‑2.1mm² wiring, widely used as replacement spare parts for manufacturing, energy and petrochemical ControlLogix cabinet maintenance and retrofit projects.

Main Specifications

• Brand: Allen‑Bradley (Rockwell Automation)
• Model: 1756‑TBCH
• Product Type: 36‑Pin Cage‑Clamp Removable Terminal Block(RTB)
• Terminal Type: Cage‑clamp screw connection
• Suitable Wire Gauge: 0.33‑2.1 mm² (22‑14 AWG)
• Matching Device: ControlLogix 1756 series I/O modules
• Feature: Support hot‑swap of I/O modules
• Housing: Standard industrial plastic housing
• Certification: UL, CE industrial compliance certification
• Operating Temperature Range: 0°C ~ +60°C

Core Functions

• Provide 36‑point cage‑clamp screw terminals for field signal and power wiring connection
• Realize signal transition between field device cables and 1756 I/O module internal circuit
• Support hot‑swap function, ｒｅｐｌａｃｅ I/O module without removing field wiring harness
• Cage‑clamp structure ensures stable and reliable wiring connection in vibration cabinet environment
• Plug‑in front‑mount design for quick assembly and disassembly on I/O module front panel
• Standard housing design fits multiple digital and analog ControlLogix I/O modules
• Reduce field re‑wiring workload during module failure maintenance and spare replacement
• Modular separation of wiring terminal and electronic circuit improves system maintainability
• Protect internal I/O circuit from external wiring mechanical stress damage
• Offer stable physical wiring interface foundation for ControlLogix automation signal acquisition

Application Scenarios

• Automotive workshop ControlLogix PLC automation control cabinets
• Water supply and sewage treatment plant process signal acquisition control racks
• Petrochemical and chemical plant analog & discrete signal collection systems
• Energy plant auxiliary equipment ControlLogix I/O station electrical cabinets
• Metallurgy, cement heavy‑industry equipment automation control units
• Packaging machinery and material handling equipment PLC control projects
• Automation reconstruction project, terminal‑block replacement and cabinet upgrade projects
• 1756 ControlLogix chassis maintenance and spare‑parts backup for legacy production lines
• Rockwell Allen‑Bradley I/O spare‑parts inventory and on‑site maintenance supporting projects