Allen-Bradley 1734-OW4 POINT I/O 4-Channel Relay Output Module

Product Overview

The Allen-Bradley 1734-OW4 functions as a high-density, 4-channel electromechanical relay output module within the POINT I/O family. It provides four Form A (normally open) isolated contacts to control a variety of load types, including solenoids, contactors, and motor starters. This module bridges the gap between low-voltage logic and high-power field devices across distributed I/O networks. We supply this unit as 100% Brand New and Original, ensuring your control system maintains factory-spec switching integrity and long-term cycle life.

Technical Specifications

The 1734-OW4 utilizes high-grade contact materials to handle significant inductive and resistive loads:

Engineering Advantages

The 1734-OW4 addresses specific field integration challenges through its compact, modular design:

• Load Isolation: The module provides 250V continuous isolation between individual contact sets and the field-side to system-side. This architecture protects sensitive backplane electronics from voltage spikes and transients generated by high-power field devices.

• Minimal Heat Footprint: With a maximum power dissipation of only 0.5 W, this module facilitates high-density mounting. It prevents heat saturation in small enclosures, even when multiple relay modules operate simultaneously.

• Granular Scalability: The POINT I/O form factor allows you to add relay channels in increments of four. This solves the problem of "over-provisioning," where engineers previously had to buy 8 or 16-channel blocks for small-scale switching tasks.

• Rugged Snubber Protection: An integrated snubber circuit manages off-state leakage and protects the contacts during inductive "break" operations (180 VA break rating). This extends the mechanical life of the relay beyond standard commercial-grade components.

FAQs

Can the 1734-OW4 switch both AC and DC loads on the same module?

Yes. Because each of the four relay outputs is isolated, you can mix different voltage levels and types (AC or DC) across the channels, provided each remains within the 250V isolation and 2.0 A current limits.

What is the maximum switching speed for this relay?

This module supports a maximum switching frequency of one operation every three seconds (0.3 Hz). Exceeding this rate with a full rated load will significantly reduce the expected electrical life of the contacts.

Does this module require a specific terminal base?

The 1734-OW4 installs into a 1734-TB or 1734-TBS terminal base. The base determines the final screw torque, but the module itself handles the signal routing. Ensure you select the base that matches your wiring preference (screw or spring clamp).

Is this unit compatible with any POINT I/O adapter?

The 1734-OW4 maintains universal compatibility with all POINT I/O adapters, including EtherNet/IP (1734-AENT), ControlNet, and DeviceNet versions. It draws 90 mA from the backplane, so you must calculate your power budget when assembling large I/O racks.