Description
Allen-Bradley 1756-OB32 is a high-density 24 V DC sourcing digital output module designed for the ControlLogix and GuardLogix control platforms. It provides 32 independent output channels split across two isolated groups of 16, allowing the system to drive industrial actuators, solenoid valves, and indicator panels. Bottom line — it packs high-density switching capabilities into a single slot.
Commercial Inventory Status
- Condition: Factory Sealed (New Original) / New Surplus
- Availability: In Stock
- Lead Time: Dispatched within 24 hours via express international air freight
- Warranty: 12-Month Supplier Warranty
Pricing Reference: The listed price serves as a general market reference point. Actual procurement costs fluctuate based on international component availability and supply chain factors. We encourage procurement managers to request a formal quote for volume-based pricing or contract negotiations.
Technical Specifications
| Parameter | Value |
| Manufacturer | Rockwell Automation / Allen-Bradley |
| Product Family | ControlLogix 1756 System |
| Output Type | Digital Sourcing (24 V DC nominal, 10–31.2 V DC range) |
| Number of Outputs | 32 channels (arranged in 2 groups of 16) |
| Current Rating per Point | 0.5 A maximum @ 50°C (drops to 0.35 A @ 60°C) |
| Current Rating per Module | 16 A maximum @ 50°C (8 A per group) |
| Backplane Current Draw | 440 mA @ 5.1 V DC / 2 mA @ 24 V DC |
| Power Dissipation | 4.8 W maximum at full load conditions |
| Removable Terminal Block (RTB) | 1756-TBCH or 1756-TBS6H (ordered separately) |
Field Deployment & Global Logistics Insights
In field deployments of high-density ControlLogix systems, managing the total thermal load inside the enclosure is necessary when running all 32 channels continuously. Well, technically this module supports electronic fusing protection, but only if you configure the latching fault resets correctly in your Studio 5000 Logix Designer tag profiles — though your mileage may vary depending on the inductive kickback of your field solenoids. Check the second status LED cluster from the left to isolate specific channel faults during initial loop checks.
Navigating the global logistics for standard automation modules requires meticulous adherence to trade compliance details to maintain lean supply chains. Because the 1756-OB32 is heavily utilized in multi-national manufacturing infrastructure, customs brokers must utilize the exact Harmonized System (HS) classification codes to prevent terminal storage penalties. We execute all international shipments under Incoterms 2020 parameters, standardizing on FCA or CPT options, which gives procurement branches predictable visibility over regional import clearance fees and freight paths. Global trade done right creates competitive advantage.
Procurement FAQ
Does the 1756-OB32 module ship with the front wiring connector included?
No, the Removable Terminal Block (RTB)—either the cage-clamp 1756-TBCH or the spring-clamp 1756-TBS6H—must be purchased as a separate line item based on your plant’s wiring standards.
Can this module be hot-swapped while the ControlLogix chassis is powered?
Yes, it supports Removal and Insertion Under Power (RIUP), allowing you to swap a damaged card without stopping your core process loops.
What export documentation is provided for international shipping lines?
Every package is accompanied by a full commercial invoice, a detailed packing list, and a Certificate of Origin to satisfy international border import requirements.
