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Allen Bradley 440T-MDBLE14DBDI Safety Interlock SWITCH

Oct. 24 , 2025
1. Product Name
Allen Bradley 440T-MDBLE14DBDI Industrial Safety Interlock SWITCH
2. Product Introduction
The Allen Bradley 440T-MDBLE14DBDI is an IP67-rated safety interlock SWITCH, tailored for wheat agricultural and heavy industrial settings. It resists grain dust, heavy rain, and voltage variations to ensure consistent safety.
3. Product Description
The Allen Bradley 440T-MDBLE14DBDI is a high-reliability safety interlock SWITCH, part of Allen Bradley’s 440T series built for high-hazard environments like wheat production lines, grain silos, and industrial processing plants. This Allen Bradley SWITCH boasts IP67 ingress protection—a key advantage for harsh conditions: it effectively blocks fine wheat grain dust (common in silo loading, harvester operations, and flour milling) and repels high-pressure rain (typical during outdoor wheat harvests). Its anti-corrosion ABS housing also endures mild agricultural chemicals and industrial lubricants, guaranteeing long-term performance in frequent daily use.
At its core, the Allen Bradley SWITCH uses a fail-safe interlock mechanism: it stays locked until connected equipment (e.g., wheat harvesters, grain conveyors, industrial mixers) fully shuts down and safety signals are confirmed. This design eliminates accidental contact risks during peak wheat harvesting or high-volume industrial operations. The SWITCH supports multi-voltage compatibility (24V DC/110V AC/230V AC), enabling seamless integration with both agricultural PLC systems (for wheat farm automation) and industrial control panels—no custom adapters required, reducing 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 workshops, minimizing operational errors from unclear safety signals.
Compliant with EN ISO 14119 (industrial safety standards), ISO 23387 (grain handling safety norms), 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 and hot summer industrial processing. It supports 10A current at 250V AC and has a mechanical service life of 300,000 operations—ideal for busy wheat farms and factories. Its compact size (8.5×6.2×2.4cm) allows flexible installation on silo panels, harvester guard rails, and machine access doors.
4. Product Model
440T-MDBLE14DBDI440T-MKEXE14NLNGNHNINJNK440T-MSALE10NA440T-MTBLE21CPCSCS
440T-MDBLE14DBDJ440T-MKEXE14NLNMNMNMNMNM440T-MSALE10NB440T-MTBLE21FAPAPA
440T-MDBLE14DCCC440T-MKEXE14NMNPNPNPNPNP440T-MSALE10NC440T-MTBLE21GALALA
440T-MDBLE14DCDD440T-MKEXE14NNNANANANANA440T-MSALE10ND440T-MTBLE21GAMAMA
440T-MDBLE14DCDH440T-MKEXE14NNNCNCNCNCNC440T-MSALE10NE440T-MTBLE21HANANA
440T-MDBLE14DCDJ440T-MKEXE14NONJNKNLNMNN440T-MSALE10NF440T-MTBLS12AAAAAA
440T-MDBLE14DCDK440T-MKEXE14NSNTNTNTNTNT440T-MSALE10NG440T-MTBLS15AAAABB
440T-MDBLE14DDCD440T-MKEXE14NWNRNSNTNUNV440T-MSALE10NH440T-MTBLS21AAABAB
440T-MDBLE14DDDE440T-MKEXE14NYNTNUNVNWNX440T-MSALE10NI440T-MTCLE11
440T-MDBLE14DDDK440T-MKEXE14NZTITITITITI440T-MSALE10NJ440T-MTCLE110A0B0B
440T-MDBLE14DDDL440T-MKEXE14OBOAOAOAOAOA440T-MSALE10NK440T-MTCLE110A0B0C
440T-MDBLE14DDED440T-MKEXE14OCODODODODOD440T-MSALE10NL440T-MTCLE110B0C0C
440T-MDBLE14DECE440T-MKEXE14OCOEOEOEOEOE440T-MSALE10NM440T-MTCLE110C0D0D
440T-MDBLE14DEDF440T-MKEXE14OFOGOHOI0J0K440T-MSALE10NN440T-MTCLE110CRDRD
440T-MDBLE14DEDL440T-MKEXE14OIOMOMOMOMOM440T-MSALE10NO440T-MTCLE110DDDDD
440T-MDBLE14DEDM440T-MKEXE14OL0M0M0M0M0M440T-MSALE10NP440T-MTCLE110E0F0F
440T-MDBLE14DFCF440T-MKEXE14ONNNNNNNNNNN440T-MSALE10NR440T-MTCLE110EEAEA
440T-MDBLE14DFDG440T-MKEXE14OU0W0W0W0W0W440T-MSALE10NS440T-MTCLE110H0I0I
440T-MDBLE14DFDM440T-MKEXE14OWOXOXOXOXOX440T-MSALE10NT440T-MTCLE110I0J0J
440T-MDBLE14DFDN440T-MKEXE14OYOZOZOZOZOZ440T-MSALE10NU440T-MTCLE110T0UUU
440T-MDBLE14DFIF440T-MKEXE14PAPBPBPBPBPB440T-MSALE10NV440T-MTCLE110Z0Y0X
440T-MDBLE14DGCG440T-MKEXE14PARARARARARA440T-MSALE10NW440T-MTCLE11AAABAB
440T-MDBLE14DGDN440T-MKEXE14PASASASASASA440T-MSALE10NX440T-MTCLE11AABABA
440T-MDBLE14DGDO440T-MKEXE14PBSBSBSBSBSB440T-MSALE10NY440T-MTCLE11ABBBBB
440T-MDBLE14DHCH440T-MKEXE14PDPEPEPEPEPE440T-MSALE10NZ440T-MTCLE11ASARAR
440T-MDBLE14DHDP440T-MKEXE14PGEGEGEGEGEG440T-MSALE10OA440T-MTCLE11BAAAAB
440T-MDBLE14DICI440T-MKEXE14PGPHPHPHPHPH440T-MSALE10OB440T-MTCLE11BADBDB
440T-MDBLE14DIDJ440T-MKEXE14PHPTPTPTPTPT440T-MSALE10OC440T-MTCLE11BBADAE
440T-MDBLE14DJCJ440T-MKEXE14PJPKPKPKPKPK440T-MSALE10OD440T-MTCLE11BBCCCC
440T-MDBLE14DJDI440T-MKEXE14PKPFPGPHPIPJ440T-MSALE10OE440T-MTCLE11BSBRBR
440T-MDBLE14DJDK440T-MKEXE14PLPMPMPMPMPM440T-MSALE10OF440T-MTCLE11BTBRBR
440T-MDBLE14DKCK440T-MKEXE14PMPNPNPNPNPN440T-MSALE10OG440T-MTCLE11CAEBEB
440T-MDBLE14DKDL440T-MKEXE14PPPEPEPEPEPE440T-MSALE10OH440T-MTCLE11CBCDCD
440T-MDBLE14DLCL440T-MKEXE14PRPSPSPSPSPS440T-MSALE10OI440T-MTCLE11CBDBDB
440T-MDBLE14DLDM440T-MKEXE14PUPVPVPVPVPV440T-MSALE10OJ440T-MTCLE11CCCACB
440T-MDBLE14DMCM440T-MKEXE14PUPWPWPWPWPW440T-MSALE10OK440T-MTCLE11CGCECF
440T-MDBLE14DMDN440T-MKEXE14PXPYPYPYPYPY440T-MSALE10OL440T-MTCLE11CKCICJ
440T-MDBLE14DNDP440T-MKEXE14PZPUPVPWPXPY440T-MSALE10OM440T-MTCLE11COCMCN
440T-MDBLE14DPDR440T-MKEXE14RARBRBRBRBRB440T-MSALE10ON440T-MTCLE11CSCRCR
440T-MDBLE14DRDS440T-MKEXE14RDSDSDSDSDSD440T-MSALE10OO440T-MTCLE11DSDRDR
440T-MDBLE14DS0T440T-MKEXE14RGRHRHRHRHRH440T-MSALE10OP440T-MTCLE11ESERER
440T-MDBLE14DWDX440T-MKEXE14RHLHMHNHNHEH440T-MSALE10OR440T-MTCLE11FININI
440T-MDBLE14DX0Y440T-MKEXE14RHSHSHSHSHSH440T-MSALE10OS440T-MTCLE11FSFRFR
440T-MDBLE14EADA440T-MKEXE14RISISISISISI440T-MSALE10OT440T-MTCLE11GPGIGI
440T-MDBLE14EAEB440T-MKEXE14RJRKRKRKRKRK440T-MSALE10OU440T-MTCLE11MCMEMD
440T-MDBLE14EAFA440T-MKEXE14RLRMRMRMRMRM440T-MSALE10OV440T-MTCLE11MHMJMI
440T-MDBLE14EAKA440T-MKEXE14RMRNRNRNRNRN440T-MSALE10OW440T-MTCLE11MMCBCB
440T-MDBLE14EBEC440T-MKEXE14RRRARARARARA440T-MSALE10OX440T-MTCLE11NNCBCB
440T-MDBLE14EBED440T-MKEXE14RRRCRCRCRCRC440T-MSALE10OY440T-MTCLE11PMPAPA
440T-MDBLE14EBEG440T-MKEXE14RRRMRMRMRMRM440T-MSALE10OZ440T-MTCLE11PNPBPB
440T-MDBLE14EBFB440T-MKEXE14RRRSRSRSRSRS440T-MSALE10PA440T-MTCLE11POPCPC
440T-MDBLE14ECED440T-MKEXE14RSPTPTPTPTPT440T-MSALE10PB440T-MTCLE11PPPDPD
440T-MDBLE14ECEE440T-MKEXE14RSRNRNRNRNRN440T-MSALE10PC440T-MTCLE11PRPFPF
440T-MDBLE14ECEF440T-MKEXE14RTRPRPRPRPRP440T-MSALE10PD440T-MTCLE11PSPEPE
440T-MDBLE14ECEH440T-MKEXE14RURNRPRRRSRT440T-MSALE10PE440T-MTCLE11SMSASA
440T-MDBLE14ECFC440T-MKEXE14RURVRVRVRVRV440T-MSALE10PF440T-MTCLE11SNSBSB
440T-MDBLE14EDEE440T-MKEXE14RXRYRYRYRYRY440T-MSALE10PG440T-MTCLE11SOSCSC
440T-MDBLE14EEEF440T-MKEXE14SASCSCSCSCSC440T-MSALE10PH440T-MTCLE11SPSDSD
440T-MDBLE14EFEG440T-MKEXE14SATATATATATA440T-MSALE10PI440T-MTCLE11SRSESE
440T-MDBLE14EFGF440T-MKEXE14SATAUAVAWAXA440T-MSALE10PK440T-MTCLE11UAVAVA
5. Product Advantages
  • IP67 Strong Protection: Shields against wheat grain dust and heavy rain, perfect for indoor silos and outdoor agricultural equipment.

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

  • Double 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), cutting integration costs.

  • Long Durability: 300,000 mechanical cycles reduce replacement frequency, lowering long-term operational expenses.

  • Clear Status LED: Dual-color indicator ensures visibility 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 clearly focuses on end-to-end wheat agricultural automation solutions. The business likely serves commercial wheat farms, large grain elevators, and wheat-processing plants, offering products like automated harvesters, intelligent silo control systems, and grain conveyor networks.
The Allen Bradley 440T-MDBLE14DBDI aligns with the website’s core offerings: www.wheat-auto.com would integrate this SWITCH into high-stress wheat equipment—outdoor harvester engine guards (resisting rain and grain dust), silo access doors (blocking fine grain particles), and conveyor safety panels. Its compliance with ISO 23387 solves a key client pain point, helping them meet strict grain handling safety standards. The SWITCH’s multi-voltage compatibility also adapts to farms’ mixed power setups (e.g., 24V DC for moisture sensors and 230V AC for conveyors). Additionally, the business may provide farm-specific after-sales support (e.g., dust-cleaning guides, 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 while enhancing safety.
7. Application Scenarios
The Allen Bradley 440T-MDBLE14DBDI SWITCH excels in wheat agricultural and heavy industrial environments:
  • Outdoor Wheat Harvesters: Mounted on engine guards, its IP67 rating 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 in dim silo environments.

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

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

  • Winter Wheat Storage Silos: Withstands -40°C temperatures, ensuring the SWITCH functions normally in freezing cold storage.

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


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