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      Siemens 3SK1211-2BB40
      · Product image is representative; revision or series may vary. Contact us to request a specific version.
      Ships by Saturday, November 14

      3SK1211-2BB40

      Safety relay output expansion

      Require for Quote:

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          PRODUCT DESCRIPTION

          3SK1211-2BB40 Safety relay output expansion

          Siemens 3SK1211-2BB40 is a SIRIUS 3SK1 output expansion unit with four normally open enabling contacts and one normally closed signaling contact. Its 24 V DC control supply and push-in terminals support the corresponding modular safety-relay arrangement.

          The contact ratings include 5 A AC-15 at 230 V and 5 A DC-13 at 24 V, with a 12 A maximum total contact current. Safety performance depends on the complete approved circuit, while the signaling contact has a different purpose from the enabling contacts.
          BEFORE YOU BUY

          Confirm the complete 3SK1211-2BB40 identity

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          ACTUAL APPLICATIONS

          Application fields for 3SK1211-2BB40

          These broad application fields reflect the documented function and technical characteristics of 3SK1211-2BB40.
          • 01 · OIL & GAS

            Petroleum Resources and Natural Gas

            Conventional petroleum resources and natural gas reservesNatural gas resources and petroleum condensate reserves
          • 02 · METALS

            Ferrous Metals and Nonferrous Minerals

            Ferrous metals and primary mineral resourcesNonferrous metals and specialty mineral resources
          • 03 · ENERGY

            Thermal Power and Renewable Energy

            Thermal power and renewable energy resourcesHydroelectric power and alternative energy resources

          Technical specifications for 3SK1211-2BB40

          • Product Model
            3SK1211-2BB40
          • Product Parameters
            Safety relay output expansion
          • In stock
            2 units
          • Manufacturer
            Siemens
          • Rated control supply
            24 V DC
          • Permitted supply factor
            0.8 to 1.2
          • Enabling contacts
            4 NO
          • Signaling contacts
            1 NC
          • Connection method
            Push-in terminals
          • Maximum power loss
            2.5 W
          • Rated insulation voltage
            300 V
          • Impulse withstand voltage
            4 kV
          • Conventional thermal current
            5 A
          • AC-15 current at 230 V
            5 A
          • DC-13 current at 24 V
            5 A
          • Maximum total contact current
            12 A
          • Maximum switching frequency
            360 operations/hour
          • Mechanical service life
            10 million operations
          • Degree of protection
            IP20
          View all additional
          Ask for Quote

          Alternative Names

          3SK1211-2BB40 SIRIUS 3SK1 Safety relay output expansion
          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 3SK1211-2BB40 within SIRIUS 3SK1

          Connect the output expansion within the permitted 3SK1 safety-relay arrangement. Use the four normally open enabling contacts for their assigned safety circuits and distinguish the normally closed signaling contact in the wiring plan.
          Supply the control circuit at 24 V DC within the permitted 0.8–1.2 voltage factor. Choose the load utilization category using the AC-15 or DC-13 ratings, and keep the combined contact loading within the 12 A total limit.
          Apply the documented feedback and monitoring arrangement for the complete safety function. The expansion unit does not establish an independent safety level without the associated base unit, circuit design and validation.

          Features:

          • Rated control supply: 24 V DC
          • Permitted supply factor: 0.8 to 1.2
          • SIRIUS 3SK1
          Use 3SK1211-2BB40 only within the documented SIRIUS 3SK1 arrangement and applicable installation instructions.
          INTERCHANGEABILITY

          Replace 3SK1211-2BB40 within SIRIUS 3SK1

          Isolate the controlled circuits and record every enabling and signaling contact connection. Keep the feedback-loop and base-unit arrangement with the maintenance record before removing the push-in terminals.
          Match the 24 V DC push-in expansion variant with four NO and one NC contact. Check the connected loads against their utilization-category ratings, and inspect the terminal engagement and feedback wiring.
          Test the complete safety function after the exchange, including start, stop, feedback and fault response. Confirm that enabling contacts and the separate signaling contact behave as required before authorizing operation.

          Features:

          • Degree of protection: IP20
          • Mating terminals and installed configuration
          • Post-exchange functional validation
          Use 3SK1211-2BB40 only within the documented SIRIUS 3SK1 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 3SK1211-2BB40
          • Document applicability checked against the complete identity
          • Directory links by subcategory and brand
          Documentation for 3SK1211-2BB40 must match the installed product identity and supplied configuration.

          Also searched as

          3UF7011-1AU00-2 3SU1401-1BB60-3AA0 3RH6911-1HA11 3SU1401-1BB20-3AA0 3RK1903-0BA00

          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
            2.25 x 10.00 x 12.16 cm
            Net weight
            0.22 kg
          • 02

            Payment & customs

            Payment
            Bank transfer (T/T)
            Currencies
            USD · EUR · GBP · RMB
            Credit cards
            Not accepted
            HS reference
            8536411090
            Origin
            Germany
          • 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 3SK1211-2BB40

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

          • What contact arrangement does 3SK1211-2BB40 provide?

            3SK1211-2BB40 provides four normally open enabling contacts and one normally closed signaling contact.

          • What control voltage is specified for 3SK1211-2BB40?

            3SK1211-2BB40 uses 24 V DC with a permitted supply factor of 0.8–1.2.

          • What AC-15 rating applies to 3SK1211-2BB40?

            The 3SK1211-2BB40 AC-15 rating at 230 V is 5 A.

          • What DC-13 rating applies to 3SK1211-2BB40?

            The 3SK1211-2BB40 DC-13 rating at 24 V is 5 A.

          • Can every 3SK1211-2BB40 contact carry 5 A simultaneously?

            Check the full load combination: 3SK1211-2BB40 has a maximum total contact current of 12 A.

          • What must be validated after an 3SK1211-2BB40 exchange?

            Validate the complete 3SK1211-2BB40 safety circuit, including enabling contacts, feedback, restart and signaling behaviour.

          • Which terminal version must be specified when buying 3SK1211-2BB40?

            3SK1211-2BB40 is the push-in terminal variant. Retain the full order code to distinguish it from other terminal versions.

          • What should an 3SK1211-2BB40 quotation identify about the safety arrangement?

            State that 3SK1211-2BB40 is an output expansion unit and identify the associated base-unit arrangement; the expansion is not a stand-alone complete safety function.
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