1756-TBCH Allen-Bradley ControlLogix 36-Pin Cage Clamp RTB

Availability: 20 left in stock

Product Overview The Allen-Bradley 1756-TBCH is a 36-position Removable Terminal Block (RTB) designed specifically for high-density ControlLogix I/O modules. It provides the...

SKU: 1756-TBCH

Manufacturer: Allen Bradley
Product No.: 1756-TBCH
Product Type: Removable Terminal Blocks
Product Origin: USA
Payment:T/T, Western Union
Weight: 140g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The Allen-Bradley 1756-TBCH is a 36-position Removable Terminal Block (RTB) designed specifically for high-density ControlLogix I/O modules. It provides the critical interface between field wiring and the PLC hardware, allowing for seamless connection of sensors, actuators, and power sources. We supply this unit as 100% Brand New and Original in factory packaging. This component is essential for any 1756-series module requiring a 36-pin connection, ensuring a gas-tight, vibration-resistant termination for industrial environments.

Technical Specifications

Specification	Technical Details
Connection Type	Cage Clamp (Screw-actuated)
Number of Positions	36 Terminals
Wire Size Range	22–14 AWG (Solid or Stranded)
Screwdriver Width	3.2 mm (1/8 in.)
Screw Torque	0.5 Nm (4.4 lb-in) to 0.6 Nm (5 lb-in)
Isolation Voltage	250V Continuous (Basic Insulation)
Housing Style	Low-Profile / Standard
Mounting	Front-mount on 1756 I/O Modules
Operating Temperature	0 to 60 °C (32 to 140 °F)
Product Net Weight	0.14 kg (0.31 lbs)
Shipping Weight	2.00 kg (Securely packed for logistics)

Engineering Advantages

Zero-Downtime Maintenance: The 1756-TBCH allows users to replace I/O modules without disconnecting a single field wire. Technicians simply unlock the RTB, swap the module, and re-seat the block, reducing Mean Time to Repair (MTTR) from hours to minutes.
Mechanical Keying Protection: This terminal block supports mechanical keying to prevent accidental insertion into the wrong type of I/O module. This safeguard eliminates the risk of applying high-voltage signals to low-voltage logic circuits during maintenance.
Superior Connection Stability: The cage clamp design applies constant pressure to the wire, which compensates for thermal expansion and mechanical vibration. Unlike standard screw terminals that may loosen over time, the 1756-TBCH maintains a low-resistance path in high-vibration machinery applications.
High-Density Wiring Management: The low-profile housing organizes 36 distinct wires within a 35mm width. This density enables high-point-count I/O configurations while maintaining a clean, professional appearance inside the control panel.

FAQs

What is the difference between the 1756-TBCH and the 1756-TBS6H?

The 1756-TBCH uses a Cage Clamp (screw-actuated clamp) which requires a screwdriver to tighten the wire. The 1756-TBS6H uses a Spring Clamp (push-in style). Both feature 36 pins and fit the same modules, but the TBCH is preferred for applications where specific torque settings must be documented for compliance.

Which Allen-Bradley modules require the 1756-TBCH?

This RTB is required for high-density digital and analog modules, such as the 1756-IB32, 1756-OB32, and certain 1756-series analog modules. Standard 16-point modules typically use the 20-pin 1756-TBNH instead. Always check your I/O module's user manual to confirm pin count.

Can I reuse a 1756-TBCH when upgrading my PLC?

Yes, as long as the terminal block is in good physical condition and the new module supports 36-pin RTBs. However, we recommend inspecting the clamps for fatigue or oxidation. Given the critical role of the RTB, many engineers install a Brand New 1756-TBCH during system overhauls to ensure maximum connection reliability.

Does the 1756-TBCH include the housing?

Yes, this part number includes the 36-pin terminal block and the standard low-profile housing that protects the wiring and provides the locking latch for the I/O module.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

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Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.