
Allen-Bradley 1734-IA2 120V AC Digital Input Module
Product Summary
The 1734-IA2 is a Rockwell Automation digital AC input module for POINT I/O systems. This unit provides two isolated 120V AC input channels. Engineers use it to reliably monitor AC limit switches and sensors. Its compact size saves valuable cabinet space.
Theme: Product Procurement & Buyer Guide (Theme A)
Key Specifications for Your Application
This 1734-IA2 module operates on a nominal 120V AC supply. It accepts a wide range from 85 to 132V AC at 47 to 63 Hertz. The module draws only 75 milliamps from the POINTBus at 5V DC. Its power dissipation is a low 0.1 Watts maximum. This efficiency makes it ideal for dense I/O racks.
Critical Isolation and Protection

The module provides continuous isolation of 240V AC. It also withstands 3250V DC for 60 seconds during testing. This high isolation protects your controller from voltage transients. The nominal input impedance is 10.6 kiloohms. This ensures accurate signal detection without excessive current draw.
Mechanical and Environmental Fit
This unit weighs just 30.9 grams or 1.09 ounces. Its dimensions are 56.0 x 12.0 x 75.5 millimeters. The open-style enclosure allows for flexible mounting. You can install the 1734-IA2 either horizontally or vertically. This adaptability simplifies panel layout and wiring.
Network Compatibility and Integration

The 1734-IA2 supports major industrial networks. These include ControlNet, DeviceNet, and EtherNet/IP. You can integrate it seamlessly into existing Logix platforms. The module features 8 key switch positions for mechanical alignment. This ensures correct insertion and prevents wiring errors.
Channel Status and Diagnostics
Each of the two input channels has a dedicated status indicator. This allows for immediate visual confirmation of input state. Technicians can quickly troubleshoot without a programming terminal. This feature reduces downtime during system commissioning and maintenance.
Thermal Management and Reliability
The module has a maximum thermal dissipation of 3.4 BTU per hour. At 132V AC, it dissipates just 1.19 BTU per hour. This low heat output prevents overheating in enclosed panels. It contributes to the long-term reliability of your control system.

Logistics & Standard Packaging Details
- One (1) Allen-Bradley 1734-IA2 Digital AC Input Module
- Manufacturer: Rockwell Automation
- Brand: Allen-Bradley
- Series: POINT I/O 1734
- Part Number: 1734-IA2
- Express shipping is available via FedEx, UPS, and DHL.