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      3RW4076-6BB44

      SIRIUS Soft Starter
      In Stock
      Ships by Friday, October 9
      Fast Shipping Available

      Product Describe：

      Siemens 3RW4076-6BB44 is a SIRIUS S12 soft starter for controlled starting and stopping of three-phase motors. It combines integrated bypass contacts, electronic motor-overload protection and adjustable current limiting.

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      Technical specifications Information Alternative names Technical notes FAQ

      Technical specifications for 3RW4076-6BB44

      Technical specifications for 3RW4076-6BB44

      • Manufacturer:
        Siemens
      • Product Category:
        General Automation
      • Spare Part Number:
        3RW4076-6BB44
      • Estimated shipping dimensions:
        3x3x1cm
      • Weight:
        0.35 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        Germany
      • Product line:
        SIRIUS
      • Product type:
        Soft starter
      • Device size:
        S12
      • Rated operational current at 40 degC:
        432 A
      • Rated operational current at 50 degC:
        385 A
      • Rated operational current at 60 degC:
        335 A
      • Motor output at 400 V and 40 degC:
        250 kW
      • Motor output at 230 V and 40 degC:
        132 kW
      • UL motor output at 220/230 V and 50 degC:
        150 hp
      • UL motor output at 460/480 V and 50 degC:
        300 hp
      • Operational voltage:
        200 to 460 V AC
      • Operational-voltage tolerance:
        -15% to +10%
      • Operational frequency:
        50 to 60 Hz
      • Frequency tolerance:
        -10% to +10%
      • Control supply:
        230 V AC at 50/60 Hz
      • Control-supply tolerance:
        -15% to +10%
      • Minimum load:
        20%
      • Minimum adjustable motor current:
        207 A
      • Continuous-duty current at 40 degC:
        115% of Ie
      • Typical operating power loss:
        165 W
      • Rated insulation voltage:
        600 V
      • Pollution degree:
        3 according to IEC 60947-4-2
      • Integrated bypass contact system:
        Yes
      • Thyristors:
        Yes
      • Electronic device self-protection:
        Yes
      • Motor overload protection:
        Yes
      • Thermistor motor-protection evaluation:
        No
      • External reset:
        Yes
      • Adjustable current limiting:
        Yes
      • Inside-delta connection:
        No
      • Motor brake output:
        No
      • Main-circuit poles:
        3
      • Main-circuit connection:
        Bar terminals
      • Auxiliary and control connection:
        Screw terminals
      • Auxiliary contacts:
        2 NO and 1 changeover; 0 NC
      • Maximum cable length:
        300 m
      • Operating ambient:
        -25 to +60 degC
      • Storage ambient:
        -40 to +80 degC
      • Derating temperature:
        40 degC
      • Installation altitude:
        Up to 5000 m
      • Front protection:
        IP00; IP20 with cover
      • Auxiliary-contact load rating:
        B300 / R300 according to UL
      • Lifecycle status:
        Discontinued since 2023-10-01; final support phase
      View as PDF Ask for Quote

      Information

      Information

      Overview Manuals Common Applications Product Precautions
      Siemens 3RW4076-6BB44 is a SIRIUS S12 soft starter for controlled starting and stopping of three-phase motors.
      • Integrated bypass contact system
      • Electronic device and motor-overload protection
      • Adjustable current limiting and external reset
      • Dedicated run, bypass and overload/failure status contacts

      Use 3RW4076-6BB44 with the documented three-phase motor, branch protection, 230 V AC control circuit, main bar terminals and auxiliary screw-terminal circuits.

      It controls motor starting and stopping while limiting electrical and mechanical stress in the approved circuit.

      Important Notice: Use the complete article number, verify the motor and circuit design, preserve every power and control conductor, and recommission all settings and status contacts before service release.

      Siemens 3RW4076-6BB44 Manuals & Downloads
      Siemens 3RW4076-6BB44 Technical Reference (PDF)Siemens 3RW4076-6BB44 Installation & Commissioning Guide (PDF)

      These documents are different: the first consolidates exact-model technical and engineering data; the second provides installation, connection, setting, commissioning and acceptance checks.

      3RW4076-6BB44 controlled motor acceleration
      Ramp a documented three-phase motor from rest while reducing mechanical and electrical starting stress.
      3RW4076-6BB44 current-limited starting
      Use the adjustable current-limit function when the approved machine design requires a capped starting current.
      3RW4076-6BB44 controlled motor stopping
      Apply the published ramp-down behavior to a compatible motor load where a controlled stop is required.
      3RW4076-6BB44 installed-base service
      Restore the exact S12 soft-starter position while preserving power, control and auxiliary-circuit identities.
      Read the applicable Siemens SIRIUS instructions before work. Verify 3RW4076-6BB44, the motor circuit and all configured power, control and status interfaces before isolation, wiring or commissioning.
      1
      Verify the complete 3RW4076-6BB44 article number and the assigned SIRIUS S12 motor-control position before work.
      2
      Isolate the main motor circuit and the separate 230 V AC control supply, then verify a safe de-energized condition.
      3
      Confirm the motor rated current and application duty against the published 40 degC, 50 degC or 60 degC current rating.
      4
      Preserve the standard three-phase circuit arrangement; this article does not support an inside-delta connection.
      5
      Maintain the documented mounting orientation, cabinet airflow and Siemens installation clearances.
      6
      Record every main bar terminal, control terminal and auxiliary contact before disconnecting conductors.
      7
      Restore the approved overload setting, starting-voltage ramp, current limit and stopping behavior from the machine record.
      8
      Commission the run, bypass and overload/failure indications, external reset and motor response before service release.

      Alternative Names

      Alternative Names

      3RW4076 6BB44 3RW40766BB44 Siemens 3RW4076-6BB44 SIRIUS 3RW4076

      Technical notes

      Technical notes

      Siemens lists 3RW4076-6BB44 as discontinued from 2023-10-01 and identifies 3RW5076-6AB14 as the preferred successor. Verify the installed motor circuit, control supply, protection and settings before replacement or migration.

      FAQS

      • What motor-circuit ratings identify Siemens 3RW4076-6BB44?
        Siemens rates 3RW4076-6BB44 for 200 to 460 V AC, 50 to 60 Hz operation, with 432 A rated operational current at 40 degC and a 250 kW motor reference at 400 V and 40 degC.
      • How does ambient temperature change the current rating of Siemens 3RW4076-6BB44?
        The exact Siemens data sheet lists 432 A at 40 degC, 385 A at 50 degC and 335 A at 60 degC, so the installed motor and duty must be checked against the applicable ambient rating.
      • Which control supply is required by Siemens 3RW4076-6BB44?
        The control circuit uses 230 V AC at either 50 Hz or 60 Hz, with a published tolerance of -15% to +10% for voltage and -10% to +10% for frequency.
      • Which protection and starting functions are built into Siemens 3RW4076-6BB44?
        It includes electronic device self-protection, motor-overload protection, an integrated bypass contact system, adjustable current limiting and external reset. Thermistor evaluation is not included.
      • Can Siemens 3RW4076-6BB44 be wired in an inside-delta circuit?
        No. The exact Siemens data states that inside-delta connection is not supported, so 3RW4076-6BB44 must remain in the documented standard three-phase circuit arrangement.
      • What conductor interfaces must be preserved when replacing Siemens 3RW4076-6BB44?
        The main circuit uses bar terminals, while auxiliary and control circuits use screw terminals. Preserve all three main poles plus the two NO and one changeover auxiliary contacts exactly as documented.
      • Which environmental limits apply to Siemens 3RW4076-6BB44?
        The Siemens data sheet specifies -25 to +60 degC operation, -40 to +80 degC storage, installation altitude up to 5000 m, and front protection of IP00 or IP20 when the approved cover is fitted.
      • What lifecycle and replacement information applies to Siemens 3RW4076-6BB44?
        Siemens lists the article as discontinued from 2023-10-01 and identifies 3RW5076-6AB14 as the preferred successor. Any migration still requires a circuit, motor, control-supply and protection review.确定
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      Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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