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Allen Bradley 440T-AKEYS10PH Trapped Key Safety SWITCH

Oct. 16 , 2025
1. Product Name
Allen Bradley 440T-AKEYS10PH Trapped Key Safety Interlock SWITCH
2. Product Introduction
The Allen Bradley 440T-AKEYS10PH is a chemical-resistant trapped key safety interlock SWITCH, designed for environments with pesticide, detergent, or chemical exposure—ideal for agricultural and industrial safety control.
3. Product Description
The Allen Bradley 440T-AKEYS10PH is a specialized trapped key safety interlock SWITCH, part of Allen Bradley’s 440T series engineered to address safety risks in chemical-exposed environments. This Allen Bradley SWITCH acts as a critical safeguard, ensuring personnel only access hazardous zones (e.g., chemical storage, pesticide-handling areas) when equipment is shut down and chemicals are secured.
Constructed with chemical-resistant polymer housing and nickel-plated contacts, the Allen Bradley SWITCH resists corrosion from common agricultural chemicals (e.g., wheat pesticides) and industrial detergents—preventing performance degradation from spills or fumes. Its core trapped key mechanism follows a fail-safe design: the key remains locked in the SWITCH until connected systems (e.g., chemical mixers, pesticide storage cabinets) are fully de-energized and sealed, eliminating risks of chemical contact or leakage. The Allen Bradley SWITCH features 24V DC/110V AC compatible terminals, enabling seamless integration with agricultural automation controls (e.g., wheat farm chemical dosing systems) and industrial safety PLCs.
Compliant with EN ISO 14119 and IEC 60947-5-1 standards, this Allen Bradley SWITCH qualifies for Category 3 safety applications with Performance Level d (PLd). It operates reliably in temperatures ranging from -35°C to 70°C, handles 90% non-condensing humidity, and supports a maximum current of 8A at 250V AC. With a mechanical service life of 220,000 operations and compact dimensions (9.1×6.9×2.8cm), the Allen Bradley SWITCH balances chemical resilience, safety performance, and space efficiency for tight chemical-handling installations.
4. Product Model
440T-AKEYS10PH440T-MDCLJ103DAB3DAC440T-MKEXS24SMSLSLSLSLSLSLSLSL440T-MSBUE33BM
440T-AKEYS10PI440T-MDCLJ103DBB3DBC440T-MKEXS250DDADBDCDDDEDFDGDH440T-MSBUE33CA
440T-AKEYS10PK440T-MDCLJ103DCB3DCC440T-MKEXS250EEAEBECEDEEEFEGEH440T-MSBUE33CB
440T-AKEYS10PL440T-MDCLJ103DDB3DDC440T-MKEXS250KKKKKKKKKKKKKKKKK440T-MSBUE33CF
440T-AKEYS10PO440T-MDCLJ103EAB3EAC440T-MKEXS250MMMMMMMMMMMMMMMMM440T-MSBUE33CK
440T-AKEYS10PP440T-MDCLJ10AA3ABA440T-MKEXS250OOOOOOOOOOOOOOOOO440T-MSBUE33CM
440T-AKEYS10PR440T-MDCLJ10AAAB440T-MKEXS250RRRRRRRRRRRRRRRRR440T-MSBUE33DA
440T-AKEYS10PS440T-MDCLJ10AABA440T-MKEXS253CFU3CFV3CFV3CFV3C440T-MSBUE33DB
440T-AKEYS10PT440T-MDCLJ10AABB440T-MKEXS253CFX3CFY3CFY3CFY3C440T-MSBUE33DD
440T-AKEYS10PU440T-MDCLJ10AAOE440T-MKEXS25AABABABABABABABABA440T-MSBUE33DG
440T-AKEYS10PW440T-MDCLJ10ABAC440T-MKEXS25HFHGHGHGHGHGHGHGHG440T-MSBUE33EA
440T-AKEYS10PZ440T-MDCLJ10ABAG440T-MKEXS25LMLSLSLSLSLSLSLSLS440T-MSBUE33EB
440T-AKEYS10RA440T-MDCLJ10ABAH440T-MKEXS25MUMSMSMSMSMSMSMSMS440T-MSBUE33EF
440T-AKEYS10RB440T-MDCLJ10ABAU440T-MKEXS25VAVBVCVDVEVFVGVHVI440T-MSBUE33EK
440T-AKEYS10RC440T-MDCLJ10ABBB440T-MKEXS25ZAZBZBZBZBZBZBZBZB440T-MSBUE33FA
440T-AKEYS10RD440T-MDCLJ10ACAD440T-MKEXS25ZAZZBZBZBZBZBZBZBZ440T-MSBUE33FB
440T-AKEYS10RE440T-MDCLJ10ADBD440T-MKEXS260A0B0B0B0B0B0B0B0B440T-MSBUE33FD
440T-AKEYS10RF440T-MDCLJ10AEAF440T-MKEXS26AABABABABABABABABA440T-MSBUE33FE
440T-AKEYS10RH440T-MDCLJ10AGAH440T-MKEXS26FAFBFCFDFEFFFGFHFI440T-MSBUE33FG
440T-AKEYS10RI440T-MDCLJ10AH0Z440T-MKEXS283AFS3BAC3BAC3BAC3B440T-MSBUE33GA
440T-AKEYS10RL440T-MDCLJ10AIAJ440T-MKEXS283BAC3BAD3BAD3BAD3B440T-MSBUE33GB
440T-AKEYS10RM440T-MDCLJ10ALAN440T-MKEXS283CFF3CFG3CFG3CFG3C440T-MSBUE33GF
440T-AKEYS10RO440T-MDCLJ10AMAO440T-MKEXS28DBDDDDDDDDDDDDDDDD440T-MSBUE33GG
440T-AKEYS10RP440T-MDCLJ10AOAP440T-MKEXS28MBMAMAMAMAMAMAMAMA440T-MSBUE33GI
440T-AKEYS10RR440T-MDCLJ10APAR440T-MKEXS28VIXBXCXDXEXFXGXHXI440T-MSBUE33GJ
440T-AKEYS10RS440T-MDCLJ10ARAT440T-MKEXS28VKWBWCWDWEWFWGWHWI440T-MSBUE33GK
440T-AKEYS10RT440T-MDCLJ10ASAT440T-MKEXS293BAG3BAH3BAH3BAH3B440T-MSBUE33HA
440T-AKEYS10RU440T-MDCLJ10ASAU440T-MKEXS29AYCRCRCRCRCRCRCRCR440T-MSBUE33HB
440T-AKEYS10RV440T-MDCLJ10AXAZ440T-MKEXS29CSCTCTCTCTCTCTCTCT440T-MSBUE33HE
440T-AKEYS10RW440T-MDCLJ10BABB440T-MKEXS29IAIMIMIMIMIMIMIMIM440T-MSBUE33HF
440T-AKEYS10RY440T-MDCLJ10BABH440T-MKEXS300A0B0B0B0B0B0B0B0B440T-MSBUE33HG
440T-AKEYS10SA440T-MDCLJ10BACA440T-MKEXS34CACBCCCDCECFCFCFCF440T-MSBUE33HH
440T-AKEYS10SB440T-MDCLJ10BADA440T-MKEXS35BACACBCCCDCECFCGCH440T-MSBUE33IB
440T-AKEYS10SC440T-MDCLJ10BAEA440T-MKEXS363CCL3CCM3CCM3CCM3C440T-MSBUE33IF
440T-AKEYS10SD440T-MDCLJ10BAFA440T-MKEXS403CCI3CCJ3CCJ3CCJ3C440T-MSBUE33II
440T-AKEYS10SE440T-MDCLJ10BAGA440T-MKEXS40AABABABABABABABABA440T-MSBUE33IJ
440T-AKEYS10SF440T-MDCLJ10BAHA440T-MKEXS40ASATATATATATATATAT440T-MSBUE33IK
440T-AKEYS10SG440T-MDCLJ10BAIA440T-MKEXS40AVAWAWAWAWAWAWAWAW440T-MSBUE33JA
440T-AKEYS10SH440T-MDCLJ10BAJA440T-MKEXS40BABBBCBDBEBFBGBHBI440T-MSBUE33JE
440T-AKEYS10SI440T-MDCLJ10BAKA440T-MKEXS40DADBDCDDDEDFDGDHDI440T-MSBUE33KF
440T-AKEYS10SJ440T-MDCLJ10BALA440T-MKEXS40GAGBGCGDGEGFGGGHGI440T-MSBUE33KI
440T-AKEYS10SK440T-MDCLJ10BBBA440T-MKEXS40HAHBHCHDHEHFHGHHHI440T-MSBUE33KJ
440T-AKEYS10SL440T-MDCLJ10BBBC440T-MKEXS40JAJBJCJDJEJFJGJHJI440T-MSBUE33KK
440T-AKEYS10SM440T-MDCLJ10BBBU440T-MKEXS40KAKBKCKDKEKFKGKHKI440T-MSBUE33LA
440T-AKEYS10SN440T-MDCLJ10BBCB440T-MKEXT143ADV3BAT3BAT3BAT3B440T-MSBUE33LE
440T-AKEYS10SO440T-MDCLJ10BBCC440T-MKEXT143AEW3BAV3BAV3BAV3B440T-MSBUE33MA
440T-AKEYS10SP440T-MDCLJ10BBDA440T-MKEXT143BBD3BAW3BAW3BAW3B440T-MSBUE33MB
440T-AKEYS10SR440T-MDCLJ10BBDB440T-MKEXT143BCB3BCC3BCC3BCC3B440T-MSBUE33MD
440T-AKEYS10SS440T-MDCLJ10BBEA440T-MKEXT143BCD3BCE3BCE3BCE3B440T-MSBUE33MH
440T-AKEYS10ST440T-MDCLJ10BBEB440T-MKEXT143DCS3DCT3DCT3DCT3D440T-MSBUE33MI
440T-AKEYS10SU440T-MDCLJ10BBFA440T-MKEXT143DCU3DCV3DCV3DCV3D440T-MSBUE33MJ
440T-AKEYS10SV440T-MDCLJ10BBFB440T-MKEXT143DCX3DCY3DCY3DCY3D440T-MSBUE33NA
440T-AKEYS10SW440T-MDCLJ10BBGA440T-MKEXT14AABCBCBCBCBC440T-MSBUE33NK
440T-AKEYS10SZ440T-MDCLJ10BBGB440T-MKEXT14AGBGBGBGBGBG440T-MSBUE33PA
440T-AKEYS10TA440T-MDCLJ10BBHA440T-MKEXT14ANBNBNBNBNBN440T-MSBUE33PD
440T-AKEYS10TB440T-MDCLJ10BBHB440T-MKEXT14ARBRBRBRBRBR440T-MSBUE33PH
440T-AKEYS10TC440T-MDCLJ10BBIA440T-MKEXT14ASBSBSBSBSBS440T-MSBUE33PI
440T-AKEYS10TD440T-MDCLJ10BBIB440T-MKEXT14BACACACACACA440T-MSBUE33PJ
440T-AKEYS10TE440T-MDCLJ10BBJA440T-MKEXT14BCCCCCCCCCCC440T-MSBUE33PK
440T-AKEYS10TG440T-MDCLJ10BBJB440T-MKEXT14BDEDEDEDEDED440T-MSBUE33RA
440T-AKEYS10TH440T-MDCLJ10BBKA440T-MKEXT14BJCJCJCJCJCJ440T-MSBUE33SA
5. Product Advantages

  • Chemical Resistance: Polymer housing resists wheat pesticides, detergents, and industrial chemicals, avoiding corrosion-related failures.

  • Rigorous Safety Compliance: PLd/Category 3 rating meets global safety standards, protecting personnel from chemical hazards.

  • Wide Temperature Adaptability: -35°C to 70°C range suits cold storage (chemicals) and heated agricultural workshops.

  • Easy Integration: Multi-voltage terminals work with farm automation systems and industrial PLCs, reducing setup time.

  • Long-Lasting Durability: 220,000-cycle mechanical life and nickel-plated contacts minimize replacement and maintenance costs.

  • Compact Design: Fits in narrow spaces like chemical cabinet doors or small pesticide mixer guards.

6. Business Insight on www.wheat-auto.com
While direct site access is unavailable, the domain “wheat-auto” confirms a focus on wheat-centric agricultural automation—specializing in equipment for planting, harvesting, chemical treatment, and grain processing. The business likely serves commercial wheat farms, grain elevators, and food processing plants, offering customized solutions like automated pesticide dosing systems, grain cleaning lines, and silo safety controls.
Given the Allen Bradley 440T-AKEYS10PH’s chemical resistance, www.wheat-auto.com would integrate this SWITCH into wheat farm chemical-handling equipment: pesticide storage cabinet doors, automated chemical mixers, and grain cleaning machines (using detergents). It would leverage the SWITCH’s compliance with agricultural standards (e.g., ISO 23387 for grain processing) to ensure safety in pesticide-exposed zones, a critical need for wheat farms to protect workers and avoid chemical contamination of crops. Additionally, the business probably offers farm-specific after-sales support—such as chemical-resistance inspections and contact cleaning—to maintain SWITCH performance in pesticide-heavy environments. This alignment with “smart agriculture” uses the Allen Bradley SWITCH to enhance wheat production safety while addressing unique agricultural chemical risks.
7. Application Scenarios
The Allen Bradley 440T-AKEYS10PH SWITCH excels in chemical-exposed industrial and agricultural environments:

  • Wheat Farm Pesticide Storage: Installed on pesticide cabinet doors, chemical resistance prevents corrosion while trapping keys until cabinets are locked.

  • Grain Cleaning Facilities: Used on detergent-based grain cleaner guards, resists cleaning chemicals and ensures access only after machines stop.

  • Industrial Chemical Storage: Mounted on small chemical drum cabinet doors, protects against solvent spills and fumes.

  • Agricultural Chemical Mixers: Integrated into pesticide mixer guards for wheat farms, ensures the mixer is off before access.

  • Food Processing (Sanitizing Zones): Applied to equipment guards in detergent-sanitized areas (wheat flour processing), avoiding chemical damage.

  • Laboratory Chemical Storage: Used on lab cabinet doors (agricultural research), resists mild chemicals and maintains safety control.


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