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

The Original New Allen-Bradley 1734-TOPS is a one-piece terminal base for the 1734 POINT I/O distributed I/O system, featuring 8 spring-clamp terminations for tool‑free, vibration‑proof wiring. It provides both the physical mounting and electrical interface between POINT I/O modules and field wiring in a single integrated assembly. The spring-clamp mechanism maintains constant tension on the wire, eliminating the need for periodic re-tightening. This one-piece design simplifies installation, supports hot-swappable module replacement without rewiring, and integrates seamlessly with the entire 1734 POINT I/O module family.

Core Engineering Highlights:
8 spring-clamp terminations | One-piece integrated mounting base | Field power bus up to 28.8V DC / 240V AC | 10A bus current rating | 8A maximum terminal current | DIN rail mounting | IP20 enclosure | -20°C to +55°C operating temperature

Key Features:

• Original New Allen-Bradley 1734-TOPS terminal base

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

• One-piece design combines mounting base and terminal block in a single assembly

• Hot-swappable module replacement without disturbing field wiring

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

• Compatible with all 1734 series POINT I/O modules (digital, analog, specialty, safety)

• DIN rail mounting with integrated snap-lock mechanism

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

• Mechanical keying prevents incorrect module insertion

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

• Open-style enclosure (IP20)

• Supports mixed AC and DC voltage configurations

Applications:

• Distributed I/O architectures for industrial automation systems

• Machine control and process control applications

• Manufacturing environments requiring modular I/O expansion

• Packaging lines, material handling systems, and conveyor control

• OEM equipment requiring modular I/O expansion

• High-vibration environments (spring-clamp maintains constant tension)

• Factory automation and machine control panels

Technical Specifications:

• Catalog Number: 1734-TOPS

• Product Type: POINT I/O One-Piece Terminal Base with Spring Clamp

• Termination Type: Spring-clamp

• Number of Terminals: 8

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

• Bus Current: 10A maximum

• Maximum Terminal Current: 8A

• Keyswitch Position: 4

• Mounting: DIN rail (35mm), horizontal orientation

• Enclosure Type: Open-style (IP20)

• Dimensions (HxWxD): Approx. 56.0 x 12.0 x 75.5 mm (2.21 x 0.47 x 2.97 in.)

• Weight: Approx. 36.9 g (1.3 oz)

• Wire Size: 0.25–2.5 mm² (22–14 AWG) solid or stranded copper wire

• Wire Strip Length (without ferrule): 12 mm (0.47 in.)

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

• Storage Temperature: –40°C to +85°C

• North American Temperature Code: T4

• ATEX Temperature Code: T4

• Certifications: CE, cULus, KC, RCM, UL, ATEX, IECEx

• UPC: 612598327928

• Country of Origin: China

• Lifecycle Status: Active

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

Installation Notes:

1. Position the base vertically above the installed units (adapter, power supply, or existing module)

2. Slide the base down, allowing the interlocking side pieces to engage the adjacent installed unit

3. Press firmly to seat the base on the DIN rail until it snaps into place

4. Verify that the DIN-rail locking screw is in a horizontal, locked position before inserting an I/O module

5. To remove a base: squeeze the module locking mechanism of the module to the right, pull up to remove the module, turn the orange locking screw to a vertical position, and slide the base up

6. For spring-clamp wiring, insert a bladed screwdriver (3 mm diameter) to latch and unlatch the wire

Related Products:

• 1734-TB – Two-piece terminal base (screw-clamp, 8-position)

• 1734-TBS – Two-piece terminal base (spring-clamp, 8-position)

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

• 1734-TOP3 – 12-position one-piece terminal base (screw-clamp)

• 1734-TOP3S – 12-position one-piece terminal base (spring-clamp)

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

• 1734-IB8 – 8-channel digital input module

• 1734-OB8 – 8-channel digital output module

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.