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 Siemens DC Contactor 3RT1024-1BB40 - Schütz,Leistungsschalter,Solarwechselrichter,Stromzähler,Solarbatterien

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Siemens DC Contactor 3RT1024-1BB40

ArtikelDetails
Komplettes Modell3RT1024-1BB40
ProduktserieSiemens SIRIUS 3RT1 Series (Discontinued, Ersatzmodell: 3RT2024-1BB40)
Structural Specification3-pole, Size S0, Screw Termination, IP20 Protection Class
SpulenspannungDC24V (24 Volt DC)
Main Contact Configuration3 Normalerweise geöffnet (3NEIN)
Application CategoryAC-3 (Three-Phase Motor Load) 12A, 5.5kW/400V

  • Produktdetails
  1. Model Interpretation and Basic Information
ArtikelDetails
Komplettes Modell3RT1024-1BB40
ProduktserieSiemens SIRIUS 3RT1 Series (Discontinued, Ersatzmodell: 3RT2024-1BB40)
Structural Specification3-pole, Size S0, Screw Termination, IP20 Protection Class
SpulenspannungDC24V (24 Volt DC)
Main Contact Configuration3 Normalerweise geöffnet (3NEIN)
Application CategoryAC-3 (Three-Phase Motor Load) 12A, 5.5kW/400V
  1. Core Parameters of Thermal Current (Ith)
  2. Thermal Current of Main Contacts
Current TypeRated ValueApplicable ConditionsRemarks
AC-1 (Resistive Load) Thermal Current40A690V und, 50/60HzMaximum allowable current for long-term operation
AC-3 (Motor Load) Nennstrom12A400V und, 50/60HzCorresponding to 5.5kW three-phase motor
DC-1 (DC Resistive Load) Thermal Current12A24In DCLong-term operating current for DC circuits
DC-3 (DC Motor Load) Nennstrom8A24In DCStarting and operating current for DC motors
  1. Thermal Current of DC24V Coil
ParameterWertCalculation Basis
Rated Coil Power5.9WSiemens official data
Coil Thermal Current0.246AI = P/U = 5.9W/24V
Coil ResistanceApprox. 97.5R = U/I = 24V/0.246A
Coil Pick-Up/Holding Power5.9W for bothDC coil has the same pick-up and holding power

III. Key Technical Characteristics

  1. Load Adaptation: Suitable for controlling ≤12A resistive load or ≤8A DC motor load in DC24V circuits
  2. Betriebstemperatur: -25°C ~ 60°C, adaptable to industrial environments
  3. Mechanisches Leben: 3×10⁷ operations, Elektrisches Leben (AC-3): 1×10⁶ Operationen
  4. Insulation Voltage: 690V, reliable electrical isolation performance
  5. Replacement Models and Compatibility

Preferred Replacement Model: 3RT2024-1BB40 (Siemens SIRIUS 3RT2 Series)

Identical main contact and coil parameters, with an additional 1NO+1NC auxiliary contact

Compatible mounting dimensions for direct replacement

Other Compatible Models:

Schneider: LC1D12BD (DC24V, 12A, 3NEIN)

ABB: A12-30-0124VDC (12A, 3NEIN, DC24V)

  1. Nutzungshinweise
  2. DC Circuit Application: When controlling DC24V circuits, derate the main contacts for use (≤12A resistive load) and install a surge suppressor (freewheeling diode) to protect the contacts
  3. Heat Management: Ensure adequate ventilation for the Schütz, avoid enclosed installation, and further derate the load when the ambient temperature exceeds 40°C (10% derating for every 10°C rise)
  4. Spulenschutz: For the DC24V coil, pay attention to power supply fluctuations (allowable range: 21.6V~26.4V DC) to avoid burnout due to overvoltage
  5. Montagemethode: Supports 35mm standard DIN rail mounting or panel mounting, with no restriction on mounting direction

Zusammenfassung

For Siemens 3RT1024-1BB40 in DC24V circuits, the thermal current of the main contacts is 12A (ohmsche Last) and the thermal current of the DC24V coil is approximately 0.246A. This model has been discontinued, and it is recommended to use the replacement model 3RT2024-1BB40 as the first choice, which features better performance and an added auxiliary contact function.

Siemens 3RT1024-1BB40 Selection Quick Reference Table (DC24V/Thermal Current Special)

Anwendbare Szenarien: Procurement Verification / On-Site Installation / Model Replacement / Parameter Review

ModuleArtikelRated Parameter/Core InformationRemarks/Applicable Conditions
Grundlegende InformationenProduktmodell3RT1024-1BB40Siemens SIRIUS 3RT1 Series (Discontinued)
SpulenspannungDC24V (Direct Current)Consistent pick-up/holding power
Kontaktkonfiguration3-pole main contacts (3NEIN), no auxiliary contactsIP20 protection, screw termination
Structural SpecificationSize S0, 35mm standard DIN rail mountingNo mounting direction restriction, panel/rail mountable
Main Contact Current ParametersAC-1 (Resistive Load) Thermal Current40A@690V AC/50/60HzMaximum allowable current for AC long-term operation
AC-3 (Motor Load) Nennstrom12A@400V AC/50/60Hz (5.5kW three-phase motor)Rated for AC motor starting/operation
DC-1 (Resistive Load) Thermal Current12A@24V DCCore parameter for DC24V long-term operation (Key Point)
DC-3 (Motor Load) Nennstrom8A@24V DCAdapted for DC24V motor load
DC24V Coil ParametersRated Power5.9WSiemens official rating
Coil Thermal Current0.246ACalculation formula: I=P/U=5.9W/24V
Coil ResistanceApprox. 97.5ΩCalculation formula: R=U/I=24V/0.246A
Allowable Voltage Range21.6V~26.4V DC (±10 %)Avoid coil burnout from over/undervoltage
Life/InsulationMechanisches Leben3×10⁷ operationsIndustrial-grade durability
AC-3 Electrical Life1×10⁶ OperationenAdapted for frequent motor start/stop
Insulation Voltage690V AC/DCReliable electrical isolation performance
Preferred Replacement ModelModell3RT2024-1BB40 (Siemens 3RT2 Series)Original factory upgraded model, direct compatible replacement
Core Compatibility PointsSame main contact/coil/mounting dimensions as 3RT1024-1BB40No rewiring cost, direct replacement
Upgrade PointsAdded 1NO+1NC auxiliary contacts, improved protection/durabilityFirst choice for cost performance
Cross-Brand Compatible ModelsSchneiderLC1D12BDDC24V, 3NO main contacts, 12A@400V AC-3
ABBA12-30-01*24VDCDC24V, 3NO main contacts, 12A@400V AC-3
Installation/Usage Key PointsInstallationsanforderungen35mm standard DIN rail, ventilated installation, avoid enclosureReduce temperature rise, ensure heat dissipation
DC ProtectionInstall a freewheeling diode on main contacts when controlling DC24V circuitsSuppress surges, prevent contact erosion
Temperature Derating10% load current derating for every 10°C rise when ambient temperature >40℃z.B., DC24V resistive load ≤10.8A at 50℃
Betriebstemperatur-25℃ ~ 60℃Adapted for industrial high/low temperature environments

Key Highlighted Points: DC24V resistive load thermal current 12A, coil thermal current 0.246A, preferred replacement model 3RT2024-1BB40

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