Allen-Bradley 1734-TOP

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1734-TOP

Type

Terminal base

Application

Distributed I/O

Used with

1734 POINT I/O system

Field power bus

28.8V DC, 120/240V AC

Signal terminal

28.8V DC, 120V/240V AC

Enclosure type

None (open-style)

Terminal base

0.4 Nm (3.5 lbin)

Wire type

Solid or stranded shielded copper wire rated at 75 °C (167 °F) or greater, 1.2 mm (3/64 in.) insulation max

Temperature, operating

IEC 60068-2-1 (Test Ad, Operating Cold), IEC 60068-2-2 (Test Bd, Operating Dry Heat), IEC 60068-2-14 (Test Nb, Operating Thermal, Shock): -20 °C ≤ Ta ≤ +55 °C (-4 °F ≤ Ta ≤ +131 °F)

Temperature, surrounding air max

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

Technical documents (1)

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

Key features

• Field power bus rated 28.8V DC, 120/240V AC
• Signal terminal rated 28.8V DC, 120V/240V AC
• Enclosure type listed as None (open-style)
• Operating temperature -20 °C to +55 °C
• Operating vibration 5 g at 10 to 500 Hz

About the Allen-Bradley 1734-TOP

The 1734-TOP is a POINT I/O terminal base (selection guide 1734-SG001). Its field power bus is rated 28.8V DC, 120/240V AC and its signal terminals 28.8V DC, 120V/240V AC. It is open-style with no enclosure type, and the terminal torque is 0.4 Nm (3.5 lbin). Wiring is solid or stranded shielded copper rated at 75 °C (167 °F) or greater, 1.2 mm (3/64 in.) insulation maximum.

What is the 1734-TOP used for?

It is the wiring base under a POINT I/O module: field wires land on it and the module plugs on top. It works from -20 °C to +55 °C, 55 °C surrounding air maximum, at 5 to 95% noncondensing humidity, with 30 g operating and 50 g nonoperating shock ratings.

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-TOP, 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.