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      Yokogawa SNT401-E3 S1
      Yokogawa SNT401-E3 S1
      Yokogawa SNT401-E3 S1
      Yokogawa SNT401-E3 S1
      Yokogawa SNT401-E3 S1
      Yokogawa SNT401-E3 S1
      · Product image is representative; revision or series may vary. Contact us to request a specific version.
      Ships by Saturday, November 14

      SNT401-E3 S1

      Optical ESB Master Module

      Require for Quote:

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          PRODUCT DESCRIPTION

          SNT401-E3 S1 Optical ESB Master Module

          Yokogawa SNT401-E3 S1 is a ProSafe-RS optical ESB master with the explosion-protection suffix E. It links an electrical ESB interface to the corresponding optical slave and supports star or chain connection of separated safety nodes. The final 3 selection is the G3 and -20 to 70 C maintenance version described in the SNT401/SNT501 specification.

          Each repeater consumes 0.5 A and the family supports no more than two optical stages. The ordinary combined-distance limit is 5 km, with a revision-dependent 10 km allowance for the documented Vnet/IP arrangement. Connector units are selected separately, and duplex masters use consecutive slots with fixed bus 1 and bus 2 positions.
          BEFORE YOU BUY

          Confirm the complete SNT401-E3 S1 identity

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          ACTUAL APPLICATIONS

          Application fields for SNT401-E3 S1

          These broad application fields reflect the documented function and technical characteristics of SNT401-E3 S1.
          • 01 · POWER GENERATION

            Conventional Electricity and Renewable Energy

            Conventional electricity and renewable energy fieldsHydroelectric resources and regional thermal power
          • 02 · OIL & GAS

            Offshore Petroleum and Onshore Gas

            Offshore petroleum and associated gas resourcesOnshore natural gas and petroleum resources
          • 03 · CHEMICALS

            Organic Chemistry and Specialty Chemicals

            Organic chemistry and specialty chemical resourcesInorganic chemistry and basic petrochemical fields

          Technical specifications for SNT401-E3 S1

          • Product Model
            SNT401-E3 S1
          • Spare Model
            SNT401-E3
          • Product Parameters
            Optical ESB Master Module
          • In stock
            1 unit
          • Manufacturer
            Yokogawa
          • Current consumption
            0.5 A
          • Connection topologies
            Star and chain
          • Maximum optical stages
            2
          • Total optical distance
            Up to 5 km across two stages
          • Minimum SENG revision
            R1.02
          • Minimum SCS revision
            R1.02
          • Explosion-protection selection
            E; approval conditions apply
          • Final suffix 3 temperature
            -20 to 70 C
          • Final suffix 3 environment
            ISA Standard G3
          • Optical connector
            LC; IEC 61754-20
          • Optical fiber specification
            Quartz single-mode; JIS C 6835 SSMA-9.3/125 or IEC 60793-2-50 B1.1
          • Optical fiber cores
            2 cores
          • Optical wavelength
            1.3 micrometres
          • Permissible optical path loss
            0 to 16 dB
          • Laser safety class
            Class 1; IEC 60825
          View all additional
          Ask for Quote

          Alternative Names

          SNT401-E3 S1 ProSafe-RS optical ESB Optical ESB Master Module
          SYSTEM & REPLACEMENT CHECK

          Information needed before ordering

          Three direct checks to secure your system integration and minimize ordering risks.

          Information

          System integration Replacement check Manuals & support
          SYSTEM INTEGRATION

          Integrate SNT401-E3 S1 within ProSafe-RS optical ESB

          Select the optical slave from the final 3 pairing table, then connect the electrical ESB side to SEC401, SEC402 or an applicable SSB401. The E suffix identifies an explosion-protection selection, but the permitted installation remains subject to the applicable approval document and enclosure conditions.
          Treat the two-stage distance as the sum of both optical sections. The 10 km allowance is specific to the stated Vnet/IP revision; it is not a general permission to extend every SNT401-E3 installation beyond the ordinary 5 km combined path.
          Place a duplex pair in adjoining odd/even slots with identical suffixes, and account for 0.5 A per module. If SNT10D operates between 60 and 70 C, retain the prescribed empty-slot clearances around the power supply and between module sets.

          Features:

          • Current consumption: 0.5 A
          • Connection topologies: Star and chain
          • ProSafe-RS optical ESB
          Use SNT401-E3 S1 only within the documented ProSafe-RS optical ESB arrangement and applicable installation instructions.
          INTERCHANGEABILITY

          Replace SNT401-E3 S1 within ProSafe-RS optical ESB

          Retain the E approval suffix and final 3 designation when comparing the installed master with the spare. An SNT401-53 is not an approval-equivalent substitute merely because the bus function and enclosure are similar.
          Before disconnecting, identify both redundant bus paths, the matching final 3 slave and any /CU1N or /CU1T connector unit. Protect the optical ends and retain the established termination arrangement during the exchange.
          Following replacement, confirm both path indications and the remote-node state through the site safety maintenance procedure. Recheck the applicable approval conditions and enclosure arrangement if the environment or mounting location has changed.

          Features:

          • SNT401-E3 S1 complete suffix
          • Final suffix 3 environment: ISA Standard G3
          • Master/slave role and installed optical paths retained
          Use SNT401-E3 S1 only within the documented ProSafe-RS optical ESB arrangement and applicable installation instructions.
          DOCUMENTATION STATUS

          Browse the Manuals, Datasheets, Official Documents, Links

          Important Notice: The linked files are Amikong-hosted reference documents. Match their product identity and scope to the supplied assembly, and consult the applicable manufacturer instructions before use. Accessories and additional documents are included only when expressly listed in the quotation.

          Features:

          • Exact-model technical data for SNT401-E3 S1
          • Document applicability checked against the complete identity
          • Directory links by subcategory and brand
          Documentation for SNT401-E3 S1 must match the installed product identity and supplied configuration.

          Also searched as

          SEC401-11 S3 SDV144-S63 S4 SDV531-S13 S1 SAI143-HE3 S3 SDV541-S33 S3

          Important notice

          Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
          This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
          BUYER INFORMATION

          Commercial terms without hidden steps

          Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
          • 01

            Shipping & delivery

            Dispatch
            Eligible stock: same / next day
            Carriers
            DHL, FedEx or UPS
            Ship from
            Xiamen, China
            Product size
            3.28 x 13.00 x 14.25 cm
            Net weight
            0.30 kg
          • 02

            Payment & customs

            Payment
            Bank transfer (T/T)
            Currencies
            USD · EUR · GBP · RMB
            Credit cards
            Not accepted
            HS reference
            8517622990
            Origin
            Japan
          • 03

            Warranty & returns

            Warranty
            12 months from AMIKON
            Inspection
            Label, condition and packing checks
            Returns
            Prior RMA authorisation required
            Compatibility
            Confirm before order
            OEM warranty
            Does not apply
          Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.

          • Part checked

            Full suffix recorded

          • Condition checked

            Label and appearance

          • Packing checked

            Antistatic protection

          • Tracking supplied

            Established couriers

          • Sandy Lin

            Dedicated account manager · 15+ years
          FREQUENTLY ASKED QUESTIONS

          Questions buyers ask about SNT401-E3 S1

          Direct answers about identity, compatibility, stock, warranty, payment and shipping.

          • Does suffix E on SNT401-E3 S1 define a complete hazardous-area installation?

            No. Suffix E on SNT401-E3 S1 selects explosion protection, but the applicable certification, enclosure and installation conditions must still be checked in Yokogawa approval documentation.

          • Is SNT401-E3 S1 interchangeable with the -53 version for approvals?

            The -53 selection is specified without explosion protection, whereas SNT401-E3 S1 carries E. Treat approval equivalence as a separate requirement rather than inferring it from the ESB function.

          • Which temperature selection is stated for SNT401-E3 S1?

            The final 3 designation of SNT401-E3 S1 is the G3, -20 to 70 C maintenance version in the family ordering table.

          • Can SNT401-E3 S1 serve as the remote slave?

            SNT401-E3 S1 is a master. The remote slave role is assigned to the matching SNT501 final 3 module in the published combination table.

          • Must both modules of a duplex SNT401-E3 S1 pair share suffixes?

            Yes. Yokogawa requires identical suffix codes for the bus 1 and bus 2 repeater modules in a duplex SNT401-E3 S1 arrangement.

          • What is the stage ceiling for an optical route using SNT401-E3 S1?

            The SNT401/SNT501 family permits a maximum of two connecting stages for SNT401-E3 S1; total distance also remains subject to the system revision.

          • How should a distributor preserve the approval selection for SNT401-E3 S1?

            Use the full SNT401-E3 S1 designation on the quote and identify any separate connector option. Do not replace the E suffix with a no-explosion-protection variant without the customer approving that change.

          • Which documents should be requested with SNT401-E3 S1?

            Request the SNT401-E3 S1 identification record and applicable approval information, plus the stated supplied scope. Manuals and accessories are included only when expressly listed on the quotation.
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