1756-TBCH 36-Pin Screw Terminal Block ControlLogix RTB | Allen-Bradley

The Original New Allen-Bradley 1756-TBCH is a 36-pin removable terminal block (RTB) designed for ControlLogix 1756 I/O modules. It provides a flexible interconnection between plant wiring and 1756 I/O modules, plugging directly into the front of the I/O module. The 1756-TBCH must be ordered separately from the I/O module and is required for all field-side wiring connections. Its removable design allows module replacement without disturbing field wiring, significantly reducing maintenance downtime. Lifecycle status: Active.

Core Engineering Highlights:
36-pin cage-clamp screw terminal block | 0.5 N·m (4.4 lb·in) screw torque | 22–14 AWG single wire / 22–16 AWG dual wire | 0–60°C operating temperature | 30g operating shock | Removable design for maintenance without rewiring | Active product status

Key Features:

• Original New Allen-Bradley 1756-TBCH terminal block

• 36-pin cage-clamp screw terminal block with standard housing

• Removable design enables module replacement without field rewiring

• Cage-clamp terminals ensure secure and reliable connections

• Compatible with all ControlLogix 1756 I/O modules requiring a 36-pin RTB

• Supports single or dual conductor wiring per terminal

• 0.5 N·m (4.4 lb·in) recommended screw torque

• 3.2 mm (1/8 in.) recommended screwdriver width

• DIN rail mounting compatible

• UL Listed

Applications:

• Field wiring termination for ControlLogix 1756 I/O modules

• Digital and analog I/O module interconnection

• ControlLogix chassis-based automation systems

• System layouts requiring fast module swaps without rewiring

• Industrial automation control panels requiring modular, maintainable wiring

Technical Specifications:

• Catalog Number: 1756-TBCH

• Product Type: Removable Terminal Block (RTB)

• Pin Count: 36-pin cage-clamp

• Connection Type: Screw-clamp

• Single Wire Size: 0.33–2.1 mm² (22–14 AWG) solid or stranded copper

• Dual Wire Size: 0.33–1.3 mm² (22–16 AWG)

• Maximum Conductors per Terminal: 2

• Screw Torque: 0.5 N·m (4.4 lb·in)

• Recommended Screwdriver: 3.2 mm (1/8 in.) width

• Wire Insulation: Max 1.2 mm (3/64 in.), rated 90°C (194°F) or greater

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Operating Shock: 30g

• Dimensions (HxWxD): Approx. 5.51 x 4.41 x 5.71 in. (140 x 112 x 145 mm)

• Weight: Approx. 0.145–0.15 kg (0.32–0.33 lb)

• Enclosure Type: Open-style (IP20)

• Certifications: CCC, cUL/UL, GOST, KC, Marine, RCM

• Lifecycle Status: Active

• Country of Origin: USA

System Compatibility:

• Rockwell Automation ControlLogix 1756 I/O modules requiring a 36-pin RTB

• 1756 ControlLogix chassis (any slot)

• Compatible with 1756 digital, analog, diagnostic, motion control, specialty I/O, and compute modules

• 1492-series interface modules (IFMs) as alternative field wiring option

Related Products:

• 1756-TBS6H – 36-pin spring-clamp terminal block (tool-less wiring alternative)

• 1756-TBNH – 20-pin NEMA screw terminal block

• 1756-TBSH – 20-pin spring-clamp terminal block

• 1492-CABLE* – Pre-wired digital cables with 36-point 1756-TBCH wiring arm

• 1756-PA72 / 1756-PB72 – ControlLogix power supplies

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. Allen-Bradley and ControlLogix are trademarks of Rockwell Automation.