Allen-Bradley 1734-TBS POINT I/O Terminal Base | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1734-TBS is a screw-clamp terminal base designed for the POINT I/O platform, providing a reliable field-wiring interface for POINT I/O adapter and I/O modules. Whether you are sourcing an original unit, evaluating compatible replacements, or selecting the right terminal base for a new panel build, this guide covers everything you need.
Technical Specifications
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Part Number: 1734-TBS
- Series: POINT I/O
- Terminal Type: Screw-clamp (spring-clamp variant: 1734-TBSC)
- Compatible Module Slots: Single-wide POINT I/O modules
- Wire Range: 22–14 AWG (0.34–2.5 mm²)
- Mounting: DIN rail (35 mm)
- Operating Temperature: -20 °C to +60 °C
- Weight: 460 g (packaged)
- Certifications: UL, CE, cUL
- Catalog Number: 1734-TBS
Compatible Replacement & Equivalent Models
When the 1734-TBS is unavailable or you need a functional equivalent, the following models are commonly evaluated:
- 1734-TBSC – Allen-Bradley spring-clamp variant; same footprint, tool-free wiring. Direct functional replacement.
- 1734-TBS4 – 4-position screw terminal base for wider I/O modules; verify module compatibility before substituting.
- 1734-TBCJC – Thermocouple terminal base; application-specific, not a general replacement.
- Third-party equivalents – Some panel builders use compatible DIN-rail terminal bases with matching pin-out; always verify electrical ratings and mechanical fit against the 1734-TBS datasheet before installation.
Note: Konmask.com recommends using genuine Allen-Bradley parts for safety-critical and validated control systems. Contact us to confirm cross-reference compatibility for your specific application.
Why Choose the Original 1734-TBS
- Guaranteed mechanical and electrical compatibility with all POINT I/O modules
- Validated by Rockwell Automation for use in SIL-rated and CE-marked systems
- Consistent torque specification (0.5 N·m) for repeatable field-wiring quality
- Full traceability and OEM warranty support
- Seamless integration with Studio 5000 / RSLogix 5000 configured systems
Typical Applications
- Discrete I/O wiring in machine control panels
- Process automation field-device termination (sensors, actuators, solenoids)
- Conveyor, packaging, and material-handling systems
- Water/wastewater SCADA panel builds
- OEM machine builders using CompactLogix or ControlLogix backplanes with POINT I/O expansion
System Compatibility
- POINT I/O Adapters: 1734-AENT, 1734-AENTR, 1734-ADN, 1734-APB, 1734-ACNR
- POINT I/O Modules: All standard single-wide 1734-series digital and analog I/O modules
- PLC Platforms: CompactLogix (1769), ControlLogix (1756), MicroLogix (via adapter)
- Networks: EtherNet/IP, DeviceNet, PROFIBUS DP, ControlNet
- Software: Studio 5000 Logix Designer v21+, RSLogix 5000
Selection Guide
Use the decision criteria below to confirm the 1734-TBS is the right terminal base for your project:
- Wiring method preference: Choose 1734-TBS (screw) for standard panel wiring; choose 1734-TBSC (spring) for vibration-prone environments or faster termination.
- Module width: Confirm your I/O module is single-wide (standard 1734-series). Double-wide modules require 1734-TBS4.
- Wire gauge: Verify field wiring is within 22–14 AWG. For finer wires, consider ferrule termination.
- Environmental rating: Standard 1734-TBS is rated for industrial environments up to 60 °C. For harsh or high-humidity environments, verify enclosure IP rating separately.
- Regulatory requirement: For UL 508A panel builds, use only UL-listed 1734-TBS units with traceable documentation.
Quality Assurance & Sourcing
- All units sourced through authorized distribution channels or verified surplus with full inspection
- Each 1734-TBS is tested for mechanical integrity and terminal continuity before shipment
- Packaging includes original Allen-Bradley labeling and part number verification
- Certificate of conformance (CoC) available upon request for regulated industries
- Konmask.com maintains stock of both new and refurbished units — specify your requirement at order time
How to Order
- Online: Add to cart directly from this page
- Email: support@konmask.com with your PO or BOM
- Phone/WhatsApp: +0086 19859288691
- Lead time: In-stock units ship within 1–3 business days; contact us for bulk or urgent requirements
- Payment: T/T, PayPal, credit card, and trade-term arrangements available for qualified buyers
Replacement & Compatibility FAQ
Q: Can I use 1734-TBSC as a direct replacement for 1734-TBS?
A: Yes. The 1734-TBSC is the spring-clamp version with identical mechanical dimensions and electrical ratings. It is a drop-in replacement in most applications.
Q: Is the 1734-TBS compatible with all POINT I/O modules?
A: It is compatible with all standard single-wide 1734-series I/O modules. Double-wide specialty modules require the 1734-TBS4.
Q: Can I mix 1734-TBS and 1734-TBSC on the same DIN rail segment?
A: Yes. Both terminal base types can coexist on the same rail and within the same POINT I/O node.
Q: Do you supply documentation for customs or regulated procurement?
A: Yes. We can provide commercial invoices, packing lists, CoC, and datasheet copies. Contact us before ordering.
Q: What is the difference between 1734-TBS and 1734-TBS4?
A: The 1734-TBS4 is a wider, 4-position terminal base designed for specialty modules that require more field connections. The standard 1734-TBS is for single-wide standard I/O modules.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
