
Allen-Bradley 1734-EP24DC POINT I/O Expansion Power Supply
Product Summary
The 1734-EP24DC expansion power supply extends POINTBus current for up to 17 I/O modules. This unit creates a new field voltage partition for downstream devices. It separates field power from the left-side module for reliable operation. The dark gray housing enables quick visual identification on the rail.
Product Procurement & Buyer Guide
Why Choose the 1734-EP24DC for Your System?
The 1734-EP24DC delivers critical power segmentation for distributed I/O racks. Engineers use this module to create isolated power zones within a single assembly. This design prevents voltage droop across long module chains. It supports horizontal or vertical mounting for flexible cabinet layouts.

Critical Technical Specifications for Selection
The module accepts an input voltage range of 10 to 28.8VDC. Its maximum power consumption is 9.8 Watts at 28.8VDC. The power dissipation measures just 3.0 Watts with thermal dissipation of 10.0 BTU/hr. This efficiency reduces heat buildup inside control panels.
Mounting Configuration and Output Current
Horizontal mounting delivers 1.0 Amps at 10 to 19.2VDC input. It provides 1.3 Amps at 19.2 to 28.8VDC input for horizontal setups. Vertical mounting delivers a consistent 1.0 Amps across the full voltage range. This flexibility matches diverse enclosure orientations.

Protection Features for Industrial Reliability
The 1734-EP24DC includes integral reverse polarity overvoltage protection. It withstands an inrush current of 6 Amps for 10 milliseconds. The isolation voltage rating is 50 Volts continuous. These safeguards protect downstream modules from wiring errors.
Environmental Tolerances for Harsh Floors
The unit operates between -13 and 140 degrees Fahrenheit. It handles non-operating temperatures from -40 to 185 degrees Fahrenheit. The module survives 5g vibration at 10 to 500 Hz. Operating shock tolerance is 30g with 50g non-operating shock.
Compatibility and System Integration

This expansion supply works with any 1734 POINT I/O adapter. It supports installation of four to seventeen modules depending on current draw. The output voltage stays within specification during a 10ms dropout at maximum load. This ensures stable operation during brief power interruptions.
Logistics & Standard Packaging Details
- One (1) Allen-Bradley 1734-EP24DC expansion power supply unit
- Product documentation and installation guide
- ESD-safe packaging for secure transport
- Express shipping available via FedEx, UPS, and DHL