Buy now: Allen-Bradley 1756-TBS6H ControlLogix 36-Point Spring Terminal Block
Atlantechdrives provides you the 1756-TBS6H, a high-density 36-pin Removable Terminal Block (RTB) featuring advanced spring-clamp technology. This component is specifically designed for high-density 1756 I/O modules, such as the 1756-IB32 or 1756-OB32, providing a faster and more vibration-resistant termination method than traditional screw-style blocks.
- Pin Count: 36 Points
- Terminal Type: Spring Clamp (Tool-less)
- Wire Gauge: 22 AWG to 16 AWG
- Compatibility: High-density (32-point) and Isolated 1756 I/O
- Safety: Vibration-proof connection for high-stress environments
Technical Performance: The Advantage of Spring-Clamp Density
The 1756-TBS6H is the preferred choice for modern automation systems where cabinet space and installation speed are priorities. By utilizing a spring-clamp mechanism, the 1756-TBS6H maintains a constant, regulated pressure on the wire regardless of thermal cycling or mechanical vibration. This «gas-tight» connection prevents oxidation and eliminates the need for periodic re-tightening of screws, a significant labor saver for large-scale plants. With 36 points packed into a single module width, it supports the extensive wiring required for individually isolated analog modules and 32-point digital modules, ensuring that signal integrity is maintained even in the most demanding high-frequency environments.
Expert Tips: Optimizing High-Density Spring Wiring
When wiring the 1756-TBS6H, we recommend using a small flat-head screwdriver or a specialized I/O tool to depress the spring actuator for easier wire insertion. Using ferrules is highly recommended with this block to ensure that all wire strands are captured within the spring’s «bite» zone. Because you are managing 36 wires in a very tight space, use thin-jacketed industrial wire to avoid bulking up the bundle, which could prevent the RTB’s side-routing cover from closing properly. Proper labeling of each wire before insertion is mandatory, as troubleshooting a 36-pin spring block without markers is extremely difficult during a downtime event.
Maintenance and System Longevity
Maintenance for the 1756-TBS6H is significantly lower than its screw-type counterparts. Since the spring automatically compensates for wire settling, manual inspections are focused on visual checks for wire insulation damage or signs of arcing. Ensure the RTB is securely latched to the I/O module; if the block feels loose, check the mounting tabs for wear. The 1756-TBS6H is built for thousands of hours of operation, but if used in high-moisture areas, ensure the cabinet has adequate humidity control to prevent moisture from wicking into the spring mechanism. Having a spare 1756-TBS6H is vital when deploying high-density modules, as they are the primary interface for all field-side diagnostics.
FAQs
Q: Is the 1756-TBS6H compatible with 1756-IA16?
A: No, 16-point modules use the 20-pin terminal blocks. The TBS6H is strictly for 36-pin high-density modules.
Q: Can I reuse the 1756-TBS6H after removing wires?
A: Yes, the spring clamp is designed for multiple insertion/removal cycles without losing tension.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
This specialized spring-clamp terminal block is designed for vibration-proof wiring on analog modules like the 1756-IF8.
