5 Top Allen-Bradley Parts to Keep in Stock to Avoid Downtime

When it comes to industrial automation, downtime means lost revenue. Keeping essential Allen-Bradley components in stock is one of the smartest ways to maintain system continuity and avoid unexpected interruptions. In this post, we highlight five high-demand Allen-Bradley parts that we recommend keeping on hand at all times.

These components are critical for communication, I/O management, and network infrastructure—especially in industries where Rockwell Automation systems are widely used.

✅ All listed parts are available for immediate shipping at ddpartssolution.com — we ship globally and offer fast support.

1. Allen-Bradley 1734-AENT – Ethernet Adapter

The 1734-AENT is a POINT I/O Ethernet/IP adapter, essential for connecting distributed I/O to your ControlLogix or CompactLogix systems. It offers flexibility and high-speed communication, making it a core part in most Ethernet/IP networks.

Why keep it in stock:
A failed adapter can bring your entire node offline. Keeping a spare ensures you're ready to replace it and restore communication instantly.

2. Allen-Bradley 1734-IE8C – Analog Input Module

The 1734-IE8C is an 8-channel current input module for POINT I/O systems. It provides high-density analog input in a compact footprint, ideal for process control environments.

Why keep it in stock:
Analog input modules are often tailored to specific sensors. If this fails, you need an exact replacement fast—delays can stall your process control loop.

3. Allen-Bradley 1783-ETAP2F – Dual-Port Ethernet Tap

The 1783-ETAP2F provides fault-tolerant communication for ring network topologies using the Device-Level Ring (DLR) protocol. It includes two fiber ports for high-speed network recovery.

Why keep it in stock:
This part is critical in high-availability networks. A single failure in a DLR ring can isolate nodes. Keeping a backup ensures zero network downtime.

4. Allen-Bradley 1783-LMS5 – Stratix Managed Ethernet Switch

The 1783-LMS5 is a Stratix 2000 managed switch designed to enhance visibility and control across industrial networks. It offers plug-and-play setup with Cisco technology integration.

Why keep it in stock:
If your network relies on managed switching for segmentation or security, downtime caused by a failed switch can be costly. Having this in stock is a smart safeguard.

5. Allen-Bradley 1756-EN2TR – ControlLogix Ethernet Module

The 1756-EN2TR is a high-speed Ethernet/IP bridge for ControlLogix chassis. It supports redundancy and multiple communication connections, making it essential for high-performance systems.

Why keep it in stock:
This module is often the backbone of ControlLogix systems. If it fails, your control processor may lose connection to remote I/O or HMIs—leading to full system outages.

🔁 Maximize Uptime with Strategic Stock

Stocking these Allen-Bradley components ensures you’re not left waiting days—or weeks—for a replacement. We’ve seen countless customers save hours of lost production by keeping these exact models on their shelves.

🛒 Browse the full Allen-Bradley parts catalog for more options or contact us for volume pricing._

✍️ Blog Author:

Eng. Rafael Moreira – Industrial Automation Specialist, DDPARTS SOLUTION
With over a decade of experience in industrial automation sourcing, Rafael Moreira helps businesses worldwide reduce downtime with the right components, fast shipping, and expert support.