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Allen Bradley 440T-MDAUE20IDIE Agri-Safety Interlock SWITCH

Oct. 24 , 2025
1. Product Name
Allen Bradley 440T-MDAUE20IDIE Agricultural-Grade Safety Interlock SWITCH
2. Product Introduction
The Allen Bradley 440T-MDAUE20IDIE is an IP67-rated agricultural-grade safety interlock SWITCH, optimized for wheat farm operations—withstanding grain dust, heavy rain, and moderate temperature fluctuations.
3. Product Description
The Allen Bradley 440T-MDAUE20IDIE is a rugged safety interlock SWITCH, part of Allen Bradley’s 440T series tailored for high-hazard agricultural workflows, especially wheat production. This Allen Bradley SWITCH features IP67 protection, a critical design for farm environments: it blocks fine wheat grain dust (common in silos and harvesters) and repels heavy rain (a frequent challenge during outdoor harvests), while its anti-corrosive housing resists mild agricultural chemical residues from crop treatments.
At its core, the Allen Bradley SWITCH uses a fail-safe interlock mechanism: it remains locked until connected wheat equipment—such as automated harvesters, grain conveyors, or pesticide mixers—is fully shut down. This eliminates accidental contact risks during busy harvest seasons or wet weather. The Allen Bradley SWITCH integrates seamlessly with farm automation systems, compatible with 24V DC agricultural PLCs and grain moisture sensors, requiring no custom adapters to reduce on-site installation time. A high-visibility LED indicator (red = locked, green = unlocked) ensures clear status recognition in dim silos, bright outdoor fields, or overcast conditions, helping farm workers confirm safety at a glance.
Compliant with EN ISO 14119 (industrial safety) and ISO 23387 (grain handling standards), this Allen Bradley SWITCH meets Category 3 safety requirements with Performance Level d (PLd). It operates reliably in temperatures from -35°C to 85°C (adapting to winter wheat storage and summer grain drying), supports 10A current at 250V AC, and has a mechanical service life of 300,000 operations—ideal for frequent, long-term farm use. Its compact size (8.2×5.9×2.2cm) allows flexible installation on tight spots like silo access panels, harvester guard rails, and conveyor control doors.
4. Product Model
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5. Product Advantages
  • IP67 Agri-Protection: Blocks grain dust and heavy rain, perfect for outdoor wheat harvests and silo operations.

  • Wide Temperature Adaptability: -35°C to 85°C range suits winter storage and summer drying without performance loss.

  • Dual Standard Compliance: Meets EN ISO 14119 and ISO 23387, simplifying regulatory checks for grain facilities.

  • Seamless Farm Integration: Works with 24V DC agricultural PLCs/sensors, cutting setup costs and time.

  • Long Service Life: 300,000 mechanical cycles handle frequent harvest use, lowering replacement frequency.

  • Clear Visibility: LED indicator ensures safety status is visible in all farm lighting/weather conditions.

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—serving commercial wheat farms, grain elevators, and food processors with solutions like automated harvesters, silo control systems, and pesticide handling equipment.
The Allen Bradley 440T-MDAUE20IDIE aligns with its core offerings: www.wheat-auto.com would integrate this SWITCH into high-use, harsh-condition wheat equipment—outdoor harvester guards (resisting rain/dust), silo access doors (blocking grain particles), and pesticide mixer storage (tolerating mild residues). It leverages the SWITCH’s ISO 23387 compliance to help clients meet food safety standards for processed wheat, a key requirement for selling to food manufacturers. Additionally, the business likely offers farm-specific after-sales support—such as dust-cleaning guides and rainproof maintenance tips—addressing rural customers’ limited on-site technical resources. This ties to “smart agriculture” trends, using industrial-grade, farm-optimized switches to boost wheat production efficiency while mitigating common farm hazards.
7. Application Scenarios
The Allen Bradley 440T-MDAUE20IDIE SWITCH excels in wheat agricultural environments:
  • Outdoor Wheat Harvesters: Mounted on engine guards, IP67 resists rain and dust, unlocking only when the engine stops.

  • Grain Silos: Blocks fine wheat dust buildup, ensuring safe access during high-volume grain loading/unloading.

  • Pesticide Storage Areas: Tolerates mild chemical residues, securing storage for wheat crop treatment products.

  • Summer Grain Drying Workshops: 85°C resistance maintains safety control in intense drying processes.

  • Winter Wheat Storage Silos: -35°C tolerance works for cold storage, ensuring reliable interlock performance in freezing conditions.

  • Open-Field Grain Conveyors: IP67 repels heavy rain, keeping safety control consistent during outdoor material transport.


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