Honeywell TC-TBNH 20-Position Removable Terminal Block Assembly

Product Description

The TC-TBNH is a high-reliability connection interface designed for Honeywell Experion PKS and series-compatible I/O modules. This 20-pin terminal block facilitates secure field-side wiring, allowing engineers to pre-wire control cabinets before module insertion. Its removable design significantly reduces downtime during maintenance or hardware upgrades, as the entire wiring harness can be detached without disconnecting individual field leads. Built for industrial durability, the TC-TBNH ensures low-impedance electrical contact and mechanical stability under high-vibration conditions.

Technical Specifications

• Model Identification: TC-TBNH

• Component Type: 20-Position Removable Terminal Block (RTB)

• Single Wire Capacity: 14 to 22 AWG (0.64 mm to 1.63 mm)

• Dual Wire Capacity: 16 to 22 AWG (0.64 mm to 1.30 mm)

• Terminal Type: High-density screw compression

• Housing Material: Industrial-grade flame-retardant thermoplastic

• Net Weight: 0.14 kg

• Compatibility: Experion PKS Series A and specialized 20-pin I/O modules

Operational Implementation

The TC-TBNH is typically paired with 8-channel or 16-channel modules that require a high-density footprint within the I/O rack. The wire size flexibility (up to 14 AWG) allows for the use of robust industrial cabling while maintaining a slim 96mm profile when mated to the module. To ensure system integrity, it is recommended to apply specified torque settings to the terminal screws to prevent thermal expansion issues or loose connections over time.

Frequently Asked Questions

• Is this terminal block keyed for specific modules?

  The TC-TBNH is a standard 20-position block. While it fits many modules, users should verify the mechanical keying on the specific I/O module to ensure correct alignment and prevent cross-wiring of different voltage types.

• Can this be used with ferruled wires?

  Yes, the compression terminals are designed to accept both bare stranded wire and ferruled ends, provided the combined diameter falls within the 14-22 AWG specification range.