1734-TBS POINT I/O Terminal Base 8-Position Spring Clamp | Allen-Bradley

The Original New Allen-Bradley 1734-TBS is a high-performance terminal base for the 1734 POINT I/O distributed I/O system, distinguished by its spring-clamp wiring mechanism. It provides the physical mounting point and the electrical interface (POINTBus) for a wide variety of digital and analog POINT I/O modules. The spring-clamp design maintains constant tension on the wire, preventing loose connections caused by thermal cycling or mechanical vibration. The 1734-TBS consists of a mounting base (1734-MB) and an integral spring-clamp removable terminal block (1734-RTBS), enabling pre-wiring and quick module replacement without rewiring. Ideal for mobile machinery, transport systems, and high-vibration industrial settings.

Core Engineering Highlights:
8-position spring-clamp terminal block | Vibration-proof spring tension technology | 10A field power bus rating | 28.8V DC / 120-240V AC rating | Two-piece design with 1734-MB mounting base and 1734-RTBS RTB | 75mA POINTBus current draw | DIN rail mounting | Hot-swappable module replacement (RIUP) support | -20°C to +55°C operating temperature

Key Features:

• Original New Allen-Bradley 1734-TBS terminal base

• Two-piece design: 1734-MB mounting base + 1734-RTBS removable terminal block

• 8 spring-clamp terminations for tool‑free, vibration‑proof wiring

• Removable Terminal Block (RTB) allows pre-wiring and quick module replacement without rewiring

• Spring-clamp technology maintains constant wire tension, eliminating periodic re-tightening

• Removal and Insertion Under Power (RIUP) support for online module replacement

• Hot-swappable module replacement without system shutdown

• Compatible with all 1734 series POINT I/O modules

• Mechanical keying (orange) prevents incorrect module insertion

• DIN rail mounting with integrated snap-lock mechanism

• Interlocking side pieces for secure module-to-module connection

• Compact 12mm width for high-density I/O configurations

Applications:

• High-vibration environments such as stamping presses and conveyor systems

• Mobile machinery and transport systems

• Manufacturing automation and process control systems

• Material handling and packaging machinery

• Automotive assembly lines and food processing facilities

• OEM equipment requiring modular I/O expansion

• Factory automation and machine control panels

Technical Specifications:

• Catalog Number: 1734-TBS

• Product Type: POINT I/O Terminal Base (Two-Piece)

• Termination Type: Spring-clamp

• Number of Terminals: 8

• Field Power Bus Voltage Rating: 28.8V DC, 120/240V AC

• Field Power Bus Current Rating: 10A maximum

• POINTBus Current Draw: 75mA

• Terminal Wire Size: 0.25–2.5 mm² (22–14 AWG)

• Mounting: DIN Rail (35mm)

• Enclosure Type: Open-style (IP20)

• Dimensions (HxWxD): 56 x 12 x 75.5 mm (2.21 x 0.47 x 2.97 in.)

• Weight: Approx. 73.3g (2.57 oz)

• Operating Temperature: –20°C to +55°C (–4°F to 131°F)

• Storage Temperature: –40°C to +85°C

• Vibration Resistance: 5 G @ 10 to 500 Hz

• Shock Resistance: 30 G

• Humidity: 5% to 95% non-condensing

• Certifications: CE, cULus, KC, RCM, UL, ATEX, IECEx, UKCA, Registro Italiano Navale

System Compatibility:

• Rockwell Automation 1734 POINT I/O modules (digital, analog, specialty, safety)

• POINT I/O communication adapters (1734-AENT, 1734-AENTR, 1734-ADN)

• POINT I/O backplane systems

• ControlLogix, CompactLogix, and GuardLogix controllers

• EtherNet/IP, ControlNet, and DeviceNet networks

Related Products:

• 1734-TB – Screw-clamp version (8-position, same form factor)

• 1734-TB3 – 12-position screw-clamp terminal base

• 1734-TB3S – 12-position spring-clamp terminal base

• 1734-TOP – One-piece screw-clamp terminal base (8 terminations)

• 1734-TOPS – One-piece spring-clamp terminal base (8 terminations)

• 1734-MB – Mounting base (replacement component for 1734-TBS assembly)

• 1734-RTBS – Removable terminal block (replacement component for 1734-TBS assembly)

• 1734-AENTR – EtherNet/IP adapter for distributed POINT I/O systems

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