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Allen Bradley 440T-MDASE21KAKB Agri-Safety Interlock SWITCH

Oct. 24 , 2025
1. Product Name
Allen Bradley 440T-MDASE21KAKB Agricultural-Grade Safety Interlock SWITCH
2. Product Introduction
The Allen Bradley 440T-MDASE21KAKB is an IP68-rated agricultural-grade safety interlock SWITCH, optimized for extreme wheat farm conditions—resisting deep dust, temporary water submersion, and pesticide residues.
3. Product Description
The Allen Bradley 440T-MDASE21KAKB is a heavy-duty safety interlock SWITCH, part of Allen Bradley’s 440T series engineered for high-hazard wheat agricultural workflows. This Allen Bradley SWITCH elevates agri-resilience with IP68 protection: it blocks fine wheat grain dust (common in dense silos) and withstands temporary water submersion (up to 1m for 30 minutes)—critical for flood-prone farms or heavy rain harvests—while its corrosion-resistant housing tolerates moderate pesticide residues from wheat crop treatments.
At its core, the Allen Bradley SWITCH uses a fail-safe interlock mechanism: it stays locked until connected wheat equipment (automated harvesters, grain elevators, pesticide mixers) is fully powered down, eliminating accidental contact risks during peak harvest or wet weather operations. It integrates seamlessly with farm automation systems, compatible with 24V DC agricultural PLCs and grain moisture sensors, requiring no custom adapters to cut on-site installation time. A high-visibility dual-color LED (red = locked, green = unlocked) ensures clear status recognition in dim silos, bright outdoor fields, or overcast/rainy conditions, helping 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 -40°C to 90°C (adapting to frigid winter wheat storage and high-heat grain drying workshops), supports 10A current at 250V AC, and has a mechanical service life of 350,000 operations—ideal for frequent, long-term harvest cycles. Its compact size (8.5×6.1×2.3cm) allows flexible installation on tight spots like silo access panels, harvester guard rails, and elevator control doors.
4. Product Model
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440T-MDASE21LALB440T-MKEXE13SNNSNSNSNS440T-MS3417GEAEAEA440T-MTALE110DDDDD
440T-MDASE21MAMB440T-MKEXE13SOOSOSOSOS440T-MS3417GGDGDGD440T-MTALE110E0F0F
440T-MDASE21NANB440T-MKEXE13SPPSPSPSPS440T-MS3417GHDHDHD440T-MTALE110EEAEA
440T-MDASE21VAVB440T-MKEXE13SPSRSRSRSR440T-MS3417J440T-MTALE110EEBEB
440T-MDASE21WAWB440T-MKEXE13STSVSVSVSV440T-MS3417JAAAAAA440T-MTALE110EECEC
440T-MDASE21XAXB440T-MKEXE13SVSWSWSWSW440T-MS3418A440T-MTALE110EEEEE
440T-MDASE21YAYB440T-MKEXE13TASASASASA440T-MS3418A0A0A0A0A440T-MTALE110F0G0G
440T-MDASE21ZAZB440T-MKEXE13TATBTBTBTB440T-MS3418A0A0B0B0B440T-MTALE110FFAFA
440T-MDASS21AABB440T-MKEXE13TATETFTGTH440T-MS3418A0A0B0C0D440T-MTALE110FFBFB
440T-MDAUE200A0B440T-MKEXE13TATKTKTKTK440T-MS3418A0AAADDEE440T-MTALE110FFFFF
440T-MDAUE200A0D440T-MKEXE13TBTCTCTCTC440T-MS3418A0B0B0B0B440T-MTALE110G0H0H
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440T-MDAUE200B0D440T-MKEXE13TDTETETETE440T-MS3418A0D0D0D0D440T-MTALE110G0I0I
440T-MDAUE200B0E440T-MKEXE13TSTTTTTTTT440T-MS3418A0E0E0E0E440T-MTALE110GGAGA
440T-MDAUE200C0D440T-MKEXE13TSUSUSUSUS440T-MS3418A0F0F0F0F440T-MTALE110GGBGB
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440T-MDAUE20AAAB440T-MKEXE13UAVAVAVAVA440T-MS3418AAABACADA440T-MTALE110H0M0M
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440T-MDAUE20AGAH440T-MKEXE13VEWEWEWEWE440T-MS3418AAGAGAGAG440T-MTALE110IIBIB
440T-MDAUE20AJAK440T-MKEXE13VFVGVGVGVG440T-MS3418AANANANAN440T-MTALE110IIIII
440T-MDAUE20AMAN440T-MKEXE13VJVKVKVKVK440T-MS3418AAPAPAPAP440T-MTALE110J0K0K
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440T-MDAUE20EAEB440T-MKEXE13XBXYXYXYXY440T-MS3418ACBCBCBCB440T-MTALE110MMAMA
440T-MDAUE20EDEE440T-MKEXE13XCXDXDXDXD440T-MS3418ACCCCCCCC440T-MTALE110MMBMB
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440T-MDAUE20IAIB440T-MKEXE13XPYPYPYPYP440T-MS3418ADFDFDFDF440T-MTALE110S0T0T
5. Product Advantages
  • IP68 Extreme Agri-Protection: Blocks deep dust and temporary submersion, tailored for flood-prone/wet wheat farms.

  • Wider Temperature Range: -40°C to 90°C suits frigid winter storage and high-heat drying processes without failure.

  • 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, reducing setup costs and time.

  • Longer Service Life: 350,000 mechanical cycles handle frequent harvest use, lowering replacement needs.

  • Clear Visibility: Dual-color LED 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-MDASE21KAKB aligns with its core offerings: www.wheat-auto.com would integrate this SWITCH into high-risk, extreme-condition wheat equipment—flood-prone harvester guards (resisting submersion), dense-dust silo doors (blocking grain particles), and pesticide mixer storage (tolerating 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 submersion maintenance guides and dust-cleaning protocols—addressing rural customers’ limited on-site technical resources. This ties to “smart agriculture” trends, using industrial-grade, extreme-environment-optimized switches to boost wheat production efficiency while mitigating harsh farm hazards.
7. Application Scenarios
The Allen Bradley 440T-MDASE21KAKB SWITCH excels in extreme wheat agricultural environments:
  • Flood-Prone Wheat Harvesters: Mounted on engine guards, IP68 resists temporary submersion, unlocking only when the engine stops.

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

  • Moderate Pesticide Storage: Tolerates pesticide residues, securing storage areas for wheat crop treatment chemicals.

  • High-Heat Grain Drying Workshops: 90°C resistance maintains safety control in intense grain drying processes.

  • Frigid Winter Wheat Storage: -40°C tolerance works for cold silos, ensuring reliable interlock performance in freezing conditions.

  • Outdoor Rainy-Season Conveyors: IP68 blocks heavy rain and submersion, keeping safety control consistent in wet open-field operations.


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