Allen-Bradley 1734-EP24DC

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1734-EP24DC

Type

Expansion power supply

Application

Distributed I/O

Used with

1734 POINT I/O system

I/O module capacity

4…17, dependent on the current rating of each module

Input voltage rating, nom

24V DC

Input voltage range

10…28.8V DC range

Field side power

24V DC (+20% = 28.8V DC) @ 400 mA

Inrush current, max

6 A for 10 ms

POINTBus output current

1.0 A @ 5V DC for 10…19.2V 1.3 A @ 5V DC for 19.2…28.8V 1.0 A @ 5V DC for 10…28.8V input

Overvoltage protection

Reverse polarity protected

Power consumption

9.8 W @ 28.8V DC

Power dissipation, max

3.0 W @ 28.8V DC

Thermal dissipation, max

10.0 BTU/hr @ 28.8V DC

Isolation voltage

50V (continuous), tested at 2600V DC for 60 s

Field power supply

10…28.8V DC

Wiring category

2 - on power ports 1 - on power ports 0.25...2.5 mm2 (22...14 AWG) solid or stranded shielded copper wire rated at 75 °C (167 °F) or greater, 1.2 mm (3/64 in.) insulation max

Terminal base screw

0.8 Nm (7 lbin)

Temperature, surrounding air

55 °C (131 °F)

Temperature, nonoperating

IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold), IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry, Heat), IEC 60068-2-14 (Test Na, Unpackaged Nonoperating, Thermal Shock): -40…+85 °C (-40…+185 °F)

Relative humidity

IEC 60068-2-30 (Test Db, Unpackaged Damp Heat): 5…95% noncondensing

Vibration

IEC 60068-2-6 (Test Fc, Operating): 5 g @ 10…500 Hz

Shock, operating

IEC 60068-2-27 (Test Ea, Unpackaged Shock): 30 g

Shock, nonoperating

IEC 60068-2-27 (Test Ea, Unpackaged Shock): 50 g

Emissions

IEC 61000-6-4

North American temp code

T4A

UKEX/ATEX temp code

T4

Enclosure type rating

None (open-style)

Mounting type

DIN rail

Technical documents (1)

• Rockwell Automation POINT I/O selection guide 1734-SG001

Key features

• Accepts 10…28.8V DC input range
• Reverse polarity protected input
• POINTBus output 1.3 A @ 5V DC for 19.2…28.8V input
• Open-style enclosure with DIN rail mounting
• Surrounding air temperature rating of 55 °C

About the Allen-Bradley 1734-EP24DC

The 1734-EP24DC is a POINT I/O 24V DC power and bus extension module. Its input is 24V DC nominal, 10…28.8V DC range, and it supplies field side power of 24V DC at 400 mA. It consumes 9.8 W at 28.8V DC.

What is the 1734-EP24DC used for?

It adds power part way along a POINT I/O node when the adapter cannot feed every module, extending the POINTBus and field power. It powers 4…17 I/O modules, depending on the current rating of each module.

Lifecycle and successor

Active (Rockwell Automation lifecycle status, checked 24 October 2026).

Before you order

What to photograph or confirm so the right unit is quoted.

Read the catalog number 1734-EP24DC, the series letter and the firmware revision from the label. Send us a photo of the label and we confirm the match before we quote.