Product Details
Overview
The Allen-Bradley 1734-OB4E is a POINT I/O 4-channel protected output module designed for compact distributed I/O systems. It provides efficient, space-saving control of DC loads and is optimized for use in applications requiring high reliability, modularity, and easy field wiring. This module delivers robust sourcing outputs, onboard protection, and stable performance in demanding industrial environments.
Key Features
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Supports four non-isolated sourcing outputs organized into one group
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Designed for 24V DC nominal operation, with voltage tolerance from 10V to 28.8V DC
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Integrated protection against short circuits and overload conditions
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Low on-state voltage drop (≤0.2V DC) for energy-efficient operation
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Compact form factor suitable for POINT I/O backplanes and distributed control systems
Technical Specifications
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Manufacturer: Allen-Bradley / Rockwell Automation
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Model Number: 1734-OB4E
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Product Type: POINT I/O Protected Output Module
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Number of Outputs: 4 sourcing (1 group of 4)
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Rated Voltage: 24V DC nominal (10V–28.8V DC range)
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On-State Voltage Drop (Max): 0.2V DC
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Output Current: 1.0 A per output; total module current ≤3.0 A
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Surge Current: 2 A for 10 ms, repeatable every 3 s
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POINTBus Current Draw: 75 mA @ 5V DC
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Power Dissipation (Max): 1.2 W
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Thermal Dissipation: 4.1 BTU/hr @ 28.8V DC
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Isolation Voltage: 50V continuous (reinforced insulation, tested at 2500V DC for 60 s)
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External Power Supply: 24V DC nominal
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Mounting Base: 1734-TB or 1734-TBS terminal base assemblies
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Torque Rating: 0.8 Nm (7 lb-in)
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Keyswitch Position: 1
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Dimensions (H×W×D): 7.55 × 1.2 × 5.6 cm
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Weight: Approx. 60 g
Performance and Design
The module features advanced short-circuit protection and thermal management to prevent field device damage. Its compact design supports easy installation and wiring within control cabinets while maintaining compatibility with the POINT I/O platform.
Applications
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Machine control and automation panels
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Packaging and material handling equipment
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Distributed I/O systems in process automation
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Energy and building management control systems
FAQ
Q1: What type of output configuration does the 1734-OB4E use?
A1: The module uses four non-isolated sourcing DC outputs grouped into a single channel block.
Q2: What kind of protection does it include?
A2: It features built-in short-circuit and overcurrent protection, ensuring long-term reliability.
Q3: What terminal base is compatible with this module?
A3: It can be installed on 1734-TB or 1734-TBS base assemblies.
Q4: What is the maximum total current per module?
A4: The total current must not exceed 3.0 A across all outputs.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.