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Allen Bradley 440T-MDALJ10AHAL Safety Interlock SWITCH

Oct. 23 , 2025
1. Product Name
Allen Bradley 440T-MDALJ10AHAL Safety Interlock SWITCH
2. Product Introduction
The Allen Bradley 440T-MDALJ10AHAL is a high-durability safety interlock SWITCH, optimized for wheat agricultural and industrial environments. It controls access to hazardous areas, ensuring safety amid grain handling, machinery operation, and harsh conditions.
3. Product Description
The Allen Bradley 440T-MDALJ10AHAL is a robust safety interlock SWITCH, part of Allen Bradley’s 440T series designed to mitigate risks in wheat farms and industrial sites. This Allen Bradley SWITCH acts as a mandatory safety barrier: it restricts access to high-risk zones—such as wheat conveyor belts, grain silo openings, or industrial machine enclosures—only when equipment is fully shut down, grain flow stops, or safety prerequisites (e.g., pressure relief) are met, preventing injuries from moving parts or operational errors.
Constructed with wear-resistant alloy housing and anti-corrosion coatings, the Allen Bradley SWITCH withstands grain abrasion (a key pain point for wheat farms during harvest) and industrial chemical exposure. It operates reliably in a temperature range of -35°C to 70°C, adapting to cold grain storage facilities and heated industrial workshops. The Allen Bradley SWITCH supports seamless integration with wheat farm devices (e.g., grain level sensors, conveyor controllers) and industrial PLCs via standard electrical terminals, eliminating the need for custom adapters and reducing installation time. Its mechanical interlock mechanism uses a fail-safe design: the lock remains engaged until connected equipment power is 切断 (cut off), avoiding risks from accidental startups or power fluctuations common in rural areas. Additionally, a clear visual indicator (red for locked, green for unlocked) helps farm and factory workers quickly confirm safety status, boosting operational efficiency.
Compliant with EN ISO 14119 and ISO 23387 (grain handling safety standards), this Allen Bradley SWITCH meets Category 3 safety requirements (Performance Level d, PLd). It handles a maximum current of 8A at 250V AC, has a mechanical service life of 250,000 operations (suitable for high-frequency wheat harvest cycles), and features compact dimensions (9.0×6.7×2.8cm)—fitting space-constrained setups like conveyor side guards or silo access panels.
4. Product Model
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5. Product Advantages
  • Grain-Abrasion Resistance: Wear-resistant housing stands up to wheat grain impact during harvest, extending service life on farms.

  • Broad Temperature Adaptability: -35°C~70°C range works for cold grain storage and heated industrial spaces, no performance loss.

  • Rigorous Safety Compliance: Meets EN ISO 14119 and ISO 23387, ensuring adherence to wheat farm and industrial safety regulations.

  • Easy Integration: Standard terminals connect to farm sensors and industrial PLCs, cutting installation complexity and costs.

  • Fail-Safe Locking: Remains engaged until equipment power is cut, preventing accidental access from startups or power spikes.

  • Low Maintenance: Anti-corrosion coatings and sealed mechanism reduce upkeep, lowering long-term operational expenses for farms and factories.

6. Business Insight on www.wheat-auto.com
While direct site access is unavailable, the “wheat-auto” domain confirms its focus on end-to-end wheat agricultural automation. The business serves commercial wheat farms, grain elevators, and food processors, offering solutions like automated harvest conveyors, silo control systems, and post-harvest cleaning equipment—all requiring reliable safety components.
The Allen Bradley 440T-MDALJ10AHAL aligns with the business’s core needs: its grain-abrasion resistance solves harvest-season wear issues, and -35°C tolerance works for cold-region silos. www.wheat-auto.com would integrate this Allen Bradley SWITCH into key wheat equipment: conveyor safety guards (preventing grain-related accidents), silo access doors (controlling entry during grain loading/unloading), and cleaning machine enclosures (adapting to farm sensor voltages). It leverages the SWITCH’s ISO 23387 compliance to help clients meet food safety certifications, critical for selling processed wheat products. Additionally, the business likely provides farm-specific after-sales support—such as abrasion inspection and terminal maintenance—to keep equipment running during peak harvest, a key differentiator for rural customers. This partnership uses industrial-grade safety switches to boost wheat handling efficiency while ensuring worker safety.
7. Application Scenarios
The Allen Bradley 440T-MDALJ10AHAL SWITCH excels in wheat agricultural and industrial environments:
  • Wheat Conveyor Belts: Mounted on conveyor guards—wear-resistant housing resists grain abrasion, fail-safe lock prevents access until belts stop.

  • Grain Silo Access Doors: Installed on silo openings—-35°C tolerance works for winter storage, visual indicator shows lock status for farm workers.

  • Wheat Cleaning Machines: Integrated into cleaner enclosures—anti-corrosion coating withstands chaff and cleaning chemicals, easy to connect to sensors.

  • Industrial Machine Guards: Used on manufacturing equipment enclosures—70°C tolerance handles heated workshops, complies with industrial safety standards.

  • Cold Grain Storage Rooms: Mounted on storage doors—-35°C resilience ensures safety control in refrigerated wheat facilities, no freezing issues.

  • Agricultural Irrigation Pumps: Applied to pump control panels—adapts to rural power fluctuations, fail-safe lock prevents access during pump operation.


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