Home > News

Allen Bradley 440T-MDALJ100L0S Dust-Proof Safety SWITCH

Oct. 22 , 2025
1. Product Name
Allen Bradley 440T-MDALJ100L0S Dust-Proof Safety Interlock SWITCH
2. Product Introduction
The Allen Bradley 440T-MDALJ100L0S is a dust-proof/wear-resistant safety interlock SWITCH, designed for -35°C~70°C environments. It’s perfect for wheat farms and industrial sites, ensuring stable safety control amid grain dust and mechanical abrasion.
3. Product Description
The Allen Bradley 440T-MDALJ100L0S is a rugged safety interlock SWITCH, part of Allen Bradley’s 440T series optimized for hazard prevention in grain-centric agricultural and heavy-industrial settings. This Allen Bradley SWITCH serves as a critical safety barrier, limiting access to high-risk zones—such as wheat farm conveyors, grain silo hatches, or industrial machinery enclosures—only when equipment is fully shut down or safety conditions (e.g., pressure relief) are met, shielding workers from mechanical injuries and operational mistakes.
Constructed with glass-fiber reinforced polyester housing (resisting wheat grain impact and long-term abrasion) and silicone rubber seals, the Allen Bradley SWITCH achieves IP65 dust-proof and water-splash protection—solving key pain points like grain dust accumulation in silos and occasional washdowns on farms. Its internal circuitry supports a flexible voltage range (12V DC~240V AC), enabling seamless integration with wheat farm devices (grain moisture sensors, conveyor controllers) and industrial PLCs without additional voltage converters, simplifying installation workflows. The Allen Bradley SWITCH adopts a mechanical interlock design: the lock stays engaged until the connected equipment’s power is cut off, eliminating accidental access caused by power fluctuations or human oversight. It also features a dual-color LED indicator (red for locked, green for unlocked) to clearly show safety status, reducing operational confusion for farmhands and factory workers.
Compliant with EN ISO 14119, IEC 60947-5-1, 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 7A at 250V AC, boasts a mechanical service life of 220,000 operations, and has compact dimensions (8.5×6.2×2.5cm)—fitting easily into space-limited setups like wheat conveyor side guards or industrial machine control panels.
4. Product Model
440T-MDALJ100L0S440T-MKEXE12CNCOCOCO440T-MRPSE20GM440T-MSSSE22NZ
440T-MDALJ100L0T440T-MKEXE12COCPCPCP440T-MRPSE20GN440T-MSSSE22OA
440T-MDALJ100L0U440T-MKEXE12CPCRCRCR440T-MRPSE20GO440T-MSSSE22OJ
440T-MDALJ100L0V440T-MKEXE12CRCSCSCS440T-MRPSE20GP440T-MSSSE22PA
440T-MDALJ100LBL440T-MKEXE12CTCUCUCU440T-MRPSE20GR440T-MSSSE22PB
440T-MDALJ100LLA440T-MKEXE12CUCVCVCV440T-MRPSE20GS440T-MSSSE22PC
440T-MDALJ100LLL440T-MKEXE12CUDUDUDU440T-MRPSE20GT440T-MSSSE22PD
440T-MDALJ100M0N440T-MKEXE12CVCZCZCZ440T-MRPSE20GU440T-MSSSE22PE
440T-MDALJ100MMA440T-MKEXE12CVDVDVDV440T-MRPSE20GV440T-MSSSE22PF
440T-MDALJ100MMM440T-MKEXE12CWCXCXCX440T-MRPSE20GW440T-MSSSE22PG
440T-MDALJ100N0O440T-MKEXE12CXCWCWCW440T-MRPSE20GX440T-MSSSE22PH
440T-MDALJ100N0P440T-MKEXE12CXCYCYCY440T-MRPSE20GY440T-MSSSE22PI
440T-MDALJ100NBN440T-MKEXE12CXDXDXDX440T-MRPSE20GZ440T-MSSSE22PJ
440T-MDALJ100NDU440T-MKEXE12CYCZCZCZ440T-MRPSE20HA440T-MSSSE22PK
440T-MDALJ100NNN440T-MKEXE12CZDJDJDJ440T-MRPSE20HB440T-MSSSE22PL
440T-MDALJ100O0P440T-MKEXE12DA0B0B0B440T-MRPSE20HC440T-MSSSE22PM
440T-MDALJ100P0R440T-MKEXE12DAAAAAAA440T-MRPSE20HD440T-MSSSE22PN
440T-MDALJ100PBP440T-MKEXE12DAAABACA440T-MRPSE20HE440T-MSSSE22PO
440T-MDALJ100PPP440T-MKEXE12DADBDBDB440T-MRPSE20HF440T-MSSSE22PP
440T-MDALJ100R0S440T-MKEXE12DADBDCDD440T-MRPSE20HG440T-MSSSE22PR
440T-MDALJ100RBR440T-MKEXE12DADBDDDF440T-MRPSE20HH440T-MSSSE22PS
440T-MDALJ100RRR440T-MKEXE12DADKDKDK440T-MRPSE20HI440T-MSSSE22PT
440T-MDALJ100S0T440T-MKEXE12DADMDMDM440T-MRPSE20HJ440T-MSSSE22PU
440T-MDALJ100SSS440T-MKEXE12DAEAEAEA440T-MRPSE20HK440T-MSSSE22PV
440T-MDALJ100T0U440T-MKEXE12DAUAUBUC440T-MRPSE20HL440T-MSSSE22PW
440T-MDALJ100TTT440T-MKEXE12DBCBCBCB440T-MRPSE20HM440T-MSSSE22PX
440T-MDALJ100U0V440T-MKEXE12DBDACAEA440T-MRPSE20HN440T-MSSSE22PY
440T-MDALJ100UUU440T-MKEXE12DBDADADA440T-MRPSE20HO440T-MSSSE22PZ
440T-MDALJ100V0W440T-MKEXE12DBDCDCDC440T-MRPSE20HP440T-MSSSE22RA
440T-MDALJ100VAN440T-MKEXE12DBDCDDDE440T-MRPSE20HR440T-MSSSE22RB
440T-MDALJ100VOW440T-MKEXE12DBEBEBEB440T-MRPSE20HS440T-MSSSE22RC
440T-MDALJ100VVV440T-MKEXE12DBUDUEUF440T-MRPSE20HT440T-MSSSE22RD
440T-MDALJ100W0X440T-MKEXE12DCDADADA440T-MRPSE20HU440T-MSSSE22RE
440T-MDALJ100WWW440T-MKEXE12DCDDDDDD440T-MRPSE20HV440T-MSSSE22RF
440T-MDALJ100X0W440T-MKEXE12DCECECEC440T-MRPSE20HW440T-MSSSE22RG
440T-MDALJ100X0Y440T-MKEXE12DDAABBCC440T-MRPSE20HX440T-MSSSE22RH
440T-MDALJ100X0Z440T-MKEXE12DDCDCDCD440T-MRPSE20HY440T-MSSSE22RI
440T-MDALJ100XXX440T-MKEXE12DDDADBDC440T-MRPSE20HZ440T-MSSSE22RJ
440T-MDALJ100Y0Z440T-MKEXE12DDDEDEDE440T-MRPSE20IA440T-MSSSE22RK
440T-MDALJ100YAM440T-MKEXE12DDEEEEEE440T-MRPSE20IB440T-MSSSE22RL
440T-MDALJ100YYY440T-MKEXE12DEABAGAF440T-MRPSE20IC440T-MSSSE22RM
440T-MDALJ100ZAC440T-MKEXE12DEDFDFDF440T-MRPSE20ID440T-MSSSE22RN
440T-MDALJ100ZZZ440T-MKEXE12DFDGDGDG440T-MRPSE20IE440T-MSSSE22RO
440T-MDALJ103AAU3AAV440T-MKEXE12DFDGDHDI440T-MRPSE20IF440T-MSSSE22RP
440T-MDALJ103AAX3AAY440T-MKEXE12DGDHDHDH440T-MRPSE20IG440T-MSSSE22RR
440T-MDALJ103ABA3ABB440T-MKEXE12DGEGEGEG440T-MRPSE20IH440T-MSSSE22RS
440T-MDALJ103ABD3ABE440T-MKEXE12DHUEUEUE440T-MRPSE20II440T-MSSSE22RT
440T-MDALJ103ABG3ABH440T-MKEXE12DIDJDJDJ440T-MRPSE20IJ440T-MSSSE22RU
440T-MDALJ103ABJ3ABK440T-MKEXE12DIDLDLDL440T-MRPSE20IK440T-MSSSE22RV
440T-MDALJ103ABM3ABN440T-MKEXE12DJDKDKDK440T-MRPSE20IO440T-MSSSE22RW
440T-MDALJ103ABP3ABR440T-MKEXE12DKDJDJDJ440T-MRPSE20IR440T-MSSSE22RX
440T-MDALJ103ABP3ABY440T-MKEXE12DKDLDLDL440T-MRPSE20IS440T-MSSSE22RY
440T-MDALJ103ABS3ABT440T-MKEXE12DLDMDMDM440T-MRPSE20IT440T-MSSSE22RZ
440T-MDALJ103ABT3ABU440T-MKEXE12DMDNDNDN440T-MRPSE20IU440T-MSSSE22SA
440T-MDALJ103ACB3ACC440T-MKEXE12DMEMFMGM440T-MRPSE20IV440T-MSSSE22SB
440T-MDALJ103ACB3ACD440T-MKEXE12DODPDPDP440T-MRPSE20IW440T-MSSSE22SC
440T-MDALJ103ACC3ACD440T-MKEXE12DPDRDRDR440T-MRPSE20IX440T-MSSSE22SD
440T-MDALJ103ACF3ACG440T-MKEXE12DRDSDSDS440T-MRPSE20IY440T-MSSSE22SE
440T-MDALJ103ACF3ACH440T-MKEXE12DSDRDRDR440T-MRPSE20IZ440T-MSSSE22SF
440T-MDALJ103ACI3ACJ440T-MKEXE12DSDTDTDT440T-MRPSE20JA440T-MSSSE22SG
440T-MDALJ103ACJ3ACK440T-MKEXE12DTDUDUDU440T-MRPSE20JB440T-MSSSE22SH
440T-MDALJ103ACJ3ACL440T-MKEXE12DUDVDVDV440T-MRPSE20JC440T-MSSSE22SI
440T-MDALJ103ACL3ACM440T-MKEXE12DVDZDZDZ440T-MRPSE20JD440T-MSSSE22SJ
440T-MDALJ103ACN3ACO440T-MKEXE12DXDYDYDY440T-MRPSE20JE440T-MSSSE22SK
5. Product Advantages
  • IP65 Dust/Water Protection: Blocks heavy grain dust and water splashes, ideal for wheat silos and farm washdown areas.

  • Wide Voltage Range: 12V DC~240V AC works with farm sensors and industrial PLCs, cutting adapter costs.

  • Abrasion-Resistant Housing: Glass-fiber polyester resists wheat grain impact, extending service life in agricultural settings.

  • Clear Status Indication: Dual-color LED signals lock/unlock states, reducing operational errors for workers.

  • Broad Temperature Adaptability: -35°C~70°C range suits cold grain storage and hot industrial workshops.

  • Low Maintenance: Sealed mechanism and durable materials minimize upkeep, lowering long-term costs.

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 conveyors, silo control systems, and post-harvest cleaning equipment.
The Allen Bradley 440T-MDALJ100L0S directly addresses the business’s core needs: its dust-proof design handles grain dust in silos, and abrasion resistance stands up to wheat grain impact on conveyors—key pain points for wheat automation. www.wheat-auto.com would integrate this SWITCH into critical equipment: conveyor safety guards (resisting grain abrasion), silo access doors (blocking dust), and wheat cleaning machine enclosures (withstanding chaff buildup). It leverages the SWITCH’s ISO 23387 compliance to help clients meet agricultural safety regulations, while the wide voltage range adapts to inconsistent rural power supplies. Additionally, the business likely offers farm-specific after-sales support (e.g., dust seal replacement, abrasion inspection) to maintain performance during peak harvest seasons. This alignment uses industrial-grade safety components to boost wheat handling efficiency and worker safety in dusty, high-abrasion farm environments.
7. Application Scenarios
The Allen Bradley 440T-MDALJ100L0S SWITCH excels in dusty, high-abrasion agricultural and industrial settings:
  • Wheat Farm Conveyors: Mounted on conveyor guards—resists grain impact and dust, ensuring access only when conveyors stop.

  • Grain Silo Hatches: Installed on silo access panels—blocks grain dust, preventing accidental entry during grain storage.

  • Wheat Cleaning Machines: Integrated into cleaner enclosures—withstands chaff abrasion, LED indicator shows safety status.

  • Industrial Assembly Lines: Used on machinery guards—IP65 blocks factory dust, wide voltage works with assembly PLCs.

  • Cold Grain Storage: Mounted on storage room doors—-35°C resilience ensures safety in refrigerated wheat storage.

  • Agricultural Chemical Bins: Applied to chemical bin access gates—dust-proof design keeps chemicals sealed, lock prevents misuse.


Copyright © Changzhou Wheat Automation Technology Co., Ltd All Rights Reserved | Sitemap |Powered by