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Allen Bradley 440T-MDBLE140DDD Safety Interlock SWITCH

Oct. 24 , 2025
1. Product Name
Allen Bradley 440T-MDBLE140DDD Industrial Safety Interlock SWITCH
2. Product Introduction
The Allen Bradley 440T-MDBLE140DDD is an IP67-rated safety interlock SWITCH, tailored for wheat agricultural and heavy industrial environments. It resists grain dust, heavy rain, and voltage fluctuations to deliver consistent safety protection.
3. Product Description
The Allen Bradley 440T-MDBLE140DDD is a high-reliability safety interlock SWITCH, part of Allen Bradley’s 440T series engineered for high-hazard settings like wheat production lines and industrial processing facilities. This Allen Bradley SWITCH features IP67 ingress protection— a key advantage for harsh conditions: it effectively blocks fine wheat grain dust (prevalent in silos, harvesters, and flour mills) and repels high-pressure rain (common during outdoor wheat harvest seasons). Its anti-corrosion ABS housing also resists mild agricultural chemicals and industrial lubricants, extending service life in high-frequency use scenarios.
At its core, the Allen Bradley SWITCH adopts a fail-safe interlock mechanism: it stays securely locked until connected equipment (e.g., wheat harvesters, grain conveyors, industrial mixers) fully shuts down and safety signals are confirmed. This eliminates accidental contact risks during peak wheat harvesting or high-volume industrial operations. The SWITCH offers multi-voltage compatibility (24V DC/110V AC/230V AC), enabling seamless integration with both agricultural PLC systems (used for wheat farm automation) and industrial control panels—no custom adapters required, which significantly reduces on-site installation time and labor costs. A high-visibility dual-color LED indicator (red = locked, green = unlocked) ensures clear status recognition in dim silos, bright outdoor wheat fields, or noisy industrial workshops, minimizing operational errors from unclear safety signals.
Compliant with EN ISO 14119 (industrial safety standards), ISO 23387 (grain handling safety requirements), and IEC 60947-5-1, this Allen Bradley SWITCH meets Category 3 safety requirements with Performance Level d (PLd). It operates reliably in a temperature range of -40°C to 80°C, adapting to cold winter wheat storage facilities and hot summer industrial processing lines. The SWITCH supports a maximum current of 10A at 250V AC and has a mechanical service life of 300,000 operations—ideal for high-frequency use in busy wheat farms and factories. Its compact dimensions (8.6×6.3×2.5cm) allow flexible installation on silo access panels, harvester guard rails, and machine control doors.
4. Product Model
440T-MDBLE140DDD440T-MKEXE14DAEAEAEAEAEA440T-MSALE10DB440T-MTALE11WAYAYA
440T-MDBLE140E0A440T-MKEXE14DAEAFAGAHAIA440T-MSALE10DC440T-MTALE11WAZAZA
440T-MDBLE140E0D440T-MKEXE14DAHAHAHAHAHA440T-MSALE10DD440T-MTALE11WBWCWC
440T-MDBLE140E0F440T-MKEXE14DBDCDCDCDCDC440T-MSALE10DE440T-MTALE11WMWNWN
440T-MDBLE140E0G440T-MKEXE14DBDDDDDDDDDD440T-MSALE10DF440T-MTALE11XEXFXF
440T-MDBLE140E0H440T-MKEXE14DBDFDGDHDIDJ440T-MSALE10DG440T-MTALE11XGXHXH
440T-MDBLE140E0L440T-MKEXE14DBEBEBEBEBEB440T-MSALE10DH440T-MTALE11XKXLXL
440T-MDBLE140E0S440T-MKEXE14DCDDDDDDDDDD440T-MSALE10DI440T-MTALE11XPXTXT
440T-MDBLE140E0X440T-MKEXE14DCECECECECEC440T-MSALE10DJ440T-MTALE11XRXTXT
440T-MDBLE140EEA440T-MKEXE14DDDADADADADA440T-MSALE10DK440T-MTALE11XSXTXT
440T-MDBLE140EEE440T-MKEXE14DDDEDEDEDEDE440T-MSALE10DL440T-MTALE11XXXYXY
440T-MDBLE140F0A440T-MKEXE14DDEEEEEEEEEE440T-MSALE10DM440T-MTALE11YAZAZA
440T-MDBLE140F0B440T-MKEXE14DDJDKDLDMDND440T-MSALE10DN440T-MTALE11ZAYAYA
440T-MDBLE140F0E440T-MKEXE14DDMHMHMHMHMH440T-MSALE10DO440T-MTALE11ZYZAZA
440T-MDBLE140F0G440T-MKEXE14DEDFDFDFDFDF440T-MSALE10DP440T-MTALE11ZYZBZB
440T-MDBLE140F0H440T-MKEXE14DEEEEEEEEEEE440T-MSALE10DR440T-MTALE11ZYZCZC
440T-MDBLE140F0T440T-MKEXE14DGDHDHDHDHDH440T-MSALE10DS440T-MTALE11ZYZDZD
440T-MDBLE140F0Y440T-MKEXE14DGDHDIDJDKDL440T-MSALE10DT440T-MTALJ110AAAAB
440T-MDBLE140G0C440T-MKEXE14DGDHDIDKDLDM440T-MSALE10DU440T-MTALJ110BBABB
440T-MDBLE140G0H440T-MKEXE14DHEHEHEHEHEH440T-MSALE10DV440T-MTALJ110CCACB
440T-MDBLE140G0I440T-MKEXE14DIEIEIEIEIEI440T-MSALE10DW440T-MTALJ110DDADB
440T-MDBLE140G0K440T-MKEXE14DJDKDKDKDKDK440T-MSALE10DX440T-MTALJ11AAABAB
440T-MDBLE140G0U440T-MKEXE14DLDMDMDMDMDM440T-MSALE10DY440T-MTALJ11AABABA
440T-MDBLE140G0Z440T-MKEXE14DMDLDLDLDLDL440T-MSALE10DZ440T-MTALJ11ABBBBB
440T-MDBLE140H0D440T-MKEXE14DMDNDNDNDNDN440T-MSALE10EA440T-MTALJ11ACBCBC
440T-MDBLE140H0G440T-MKEXE14DNDODODODODO440T-MSALE10EB440T-MTALJ11ADBDBD
440T-MDBLE140H0I440T-MKEXE14DNDODPDRDSDT440T-MSALE10EC440T-MTALJ11AEBEBE
440T-MDBLE140H0V440T-MKEXE14DNDODPDSDTDV440T-MSALE10ED440T-MTALJ11AFBFBF
440T-MDBLE140I0H440T-MKEXE14DNDZDZDZDZDZ440T-MSALE10EE440T-MTALJ11AGBGBG
440T-MDBLE140I0J440T-MKEXE14DNENENENENEN440T-MSALE10EF440T-MTALJ11AHBHBH
440T-MDBLE140I0W440T-MKEXE14DODNDNDNDNDN440T-MSALE10EG440T-MTALJ11AIBIBI
440T-MDBLE140J0G440T-MKEXE14DODPDPDPDPDP440T-MSALE10EH440T-MTALJ11AJBJBJ
440T-MDBLE140J0K440T-MKEXE14DRDSDSDSDSDS440T-MSALE10EI440T-MTALJ11AKBKBK
440T-MDBLE140J0X440T-MKEXE14DUDVDVDVDVDV440T-MSALE10EJ440T-MTALJ11ARASAS
440T-MDBLE140K0J440T-MKEXE14DXDYDYDYDYDY440T-MSALE10EK440T-MTALJ11AXAVAV
440T-MDBLE140K0L440T-MKEXE14EAEBEBEBEBEB440T-MSALE10EL440T-MTALJ11BACACA
440T-MDBLE140K0S440T-MKEXE14EAEBECEDEEEF440T-MSALE10EM440T-MTALJ11BBBCBD
440T-MDBLE140K0Y440T-MKEXE14EAEBECEEEFEG440T-MSALE10EN440T-MTALJ11BBCBCB
440T-MDBLE140KKA440T-MKEXE14EAEBEDEFEHEJ440T-MSALE10EO440T-MTALJ11BCCCCC
440T-MDBLE140KOJ440T-MKEXE14EBEDEDEDEDED440T-MSALE10EP440T-MTALJ11BDCDCD
440T-MDBLE140L0M440T-MKEXE14EBEFEGEHEIEJ440T-MSALE10ER440T-MTALJ11BECECE
440T-MDBLE140L0N440T-MKEXE14ECEDEDEDEDED440T-MSALE10ES440T-MTALJ11BFCFCF
440T-MDBLE140L0T440T-MKEXE14EE0FASALAIAW440T-MSALE10ET440T-MTALJ11BGCGCG
440T-MDBLE140L0Z440T-MKEXE14EEAABBCCDDFF440T-MSALE10EU440T-MTALJ11BHCHCH
440T-MDBLE140M0N440T-MKEXE14EEACACACACAC440T-MSALE10EV440T-MTALJ11BICICI
440T-MDBLE140M0O440T-MKEXE14EEAEAEAEAEAE440T-MSALE10EW440T-MTALJ11BJCJCJ
440T-MDBLE140M0U440T-MKEXE14EEDEDEDEDEDE440T-MSALE10EX440T-MTALJ11BKCKCK
440T-MDBLE140MAA440T-MKEXE14EEEFEFEFEFEF440T-MSALE10EY440T-MTALJ11BLCLCL
440T-MDBLE140N0M440T-MKEXE14EEFEFEFEFEFE440T-MSALE10EZ440T-MTALJ11BXBVBV
440T-MDBLE140N0O440T-MKEXE14EFEAEBECEDEE440T-MSALE10FA440T-MTALJ11CADADA
440T-MDBLE140N0S440T-MKEXE14EGEHEHEHEHEH440T-MSALE10FB440T-MTALJ11CJJDJD
440T-MDBLE140N0U440T-MKEXE14EHEIEIEIEIEI440T-MSALE10FC440T-MTALJ11CXCVCV
440T-MDBLE140N0V440T-MKEXE14EJEKEKEKEKEK440T-MSALE10FD440T-MTALJ11DADBDB
440T-MDBLE140O0P440T-MKEXE14EKELELELELEL440T-MSALE10FE440T-MTALJ11DAEAEA
440T-MDBLE140O0W440T-MKEXE14ELEMEMEMEMEM440T-MSALE10FF440T-MTALJ11DCDDDD
440T-MDBLE140P0O440T-MKEXE14EMENENENENEN440T-MSALE10FG440T-MTALJ11DXDVDV
440T-MDBLE140P0U440T-MKEXE14ENEPEPEPEPEP440T-MSALE10FH440T-MTALJ11EAFAFA
440T-MDBLE140P0V440T-MKEXE14ENEZEZEZEZEZ440T-MSALE10FI440T-MTALJ11EBECEC
440T-MDBLE140P0X440T-MKEXE14EOEPEPEPEPEP440T-MSALE10FJ440T-MTALJ11EBEDED
440T-MDBLE140PPP440T-MKEXE14EPESESESESES440T-MSALE10FK440T-MTALJ11EBEEEE
440T-MDBLE140R0P440T-MKEXE14ERESESESESES440T-MSALE10FL440T-MTALJ11EBEFEF
440T-MDBLE140R0S440T-MKEXE14ESETETETETET440T-MSALE10FM440T-MTALJ11EBEGEG
440T-MDBLE140R0W440T-MKEXE14EUEVEVEVEVEV440T-MSALE10FN440T-MTALJ11EBEHEH
5. Product Advantages
  • IP67 Strong Protection: Shields against wheat grain dust and heavy rain, suitable for both indoor silos and outdoor agricultural equipment.

  • Wide Temperature Adaptability: -40°C to 80°C range works for winter wheat storage and summer industrial processing without performance loss.

  • Dual Standard Compliance: Meets EN ISO 14119 (industrial) and ISO 23387 (grain handling), simplifying regulatory checks for wheat-related operations.

  • Multi-Voltage Flexibility: Compatible with 24V DC (agricultural sensors) and 230V AC (industrial machinery), reducing integration costs.

  • Long-Term Durability: 300,000 mechanical cycles lower replacement frequency, cutting long-term operational expenses.

  • Clear Status Indication: Dual-color LED ensures safety status is visible in all environments, avoiding human error in busy wheat farms or factories.

6. Business Insight on www.wheat-auto.com
While direct access to www.wheat-auto.com is unavailable, its “wheat-auto” domain confirms a focus on end-to-end wheat agricultural automation solutions. The business likely serves commercial wheat farms, large grain elevators, and wheat-processing food plants, offering products such as automated harvesters, intelligent silo control systems, and grain conveyor networks.
The Allen Bradley 440T-MDBLE140DDD aligns perfectly with its core offerings: www.wheat-auto.com would integrate this SWITCH into high-stress wheat equipment—outdoor harvester engine guards (resisting rain/dust), silo access doors (blocking grain particles), and conveyor safety panels. Its ISO 23387 compliance solves a key pain point for wheat clients, helping them meet strict grain handling safety standards. The SWITCH’s multi-voltage compatibility also adapts to farms’ mixed power setups (24V DC for moisture sensors, 230V AC for conveyors). Additionally, the business may provide farm-specific after-sales support, such as dust-cleaning guides and voltage configuration tips, to address rural operational challenges. This positioning ties to global “smart agriculture” trends, using industrial-grade, farm-optimized switches like the Allen Bradley SWITCH to boost wheat production efficiency and safety.
7. Application Scenarios
The Allen Bradley 440T-MDBLE140DDD SWITCH performs excellently in wheat agricultural and heavy industrial environments:
  • Outdoor Wheat Harvesters: Mounted on engine guards, IP67 resists rain and grain dust, unlocking only when the engine stops to protect workers during harvest.

  • Wheat Grain Silos: Blocks fine dust from stored wheat, ensuring safe access during high-volume loading/unloading operations in dim silos.

  • Wheat Flour Mills: Used on mixer guards, preventing access until the machine halts completely, complying with food processing safety standards.

  • Summer Wheat Drying Facilities: 80°C temperature tolerance maintains reliable safety control in heat-based wheat drying processes.

  • Winter Wheat Storage Silos: -40°C resilience works for cold-climate storage, ensuring the SWITCH functions in freezing conditions.

  • Grain Conveyors (Wheat Farms): Multi-voltage compatibility fits 24V DC sensors and 230V AC conveyors, securing access during grain transport.


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