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Siemens 3RT2045-3KB40
AC3:37KW. 1NO+1NC. 24VDC Power Contactors
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Product Description
The AC3:37KW. 1NO+1NC. 24VDC power contactor is designed to handle high currents and voltages, making it suitable for a wide range of industrial applications. This model features a robust construction with integrated varistor protection, ensuring reliable operation even under extreme conditions. The contactor is equipped with spring-type terminals for easy installation and maintenance. With its 3-pole design and 3 NO configuration, this contactor provides versatile connectivity options, making it an ideal choice for various industrial applications.
The AC3:37KW/400V model is particularly well-suited for powering 2A PLC outputs. Its compact size (S3) and high capacity (80 A) make it a reliable solution for demanding industrial environments. The integrated varistor provides an additional layer of protection against voltage surges, ensuring the longevity of connected equipment.
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Offer details
- Offer from:
Trusted supplier — Poland, member since 2023, 50–99 employees - Availability:
- 1 pc.Updated at: 16-09-2026In-Stock
- Warranty:
- 3 months
- Condition:
- Used
Specifications
- Brand
- Siemens
- Modular version
- Voltage type for actuating
- DC
- Rated control supply voltage Us at DC
- 24 V
- Rated operation power NEMA
- 44.129924999 kW
- Rated operation power at AC-3, 400 V
- 37 kW
- Rated operation current Ie at AC-3, 400 V
- 80 A
Available Offers
(3)| Condition | Availability | Supplier | Warranty | Action | |
|---|---|---|---|---|---|
| Condition Used | Availability 1 pc. Updated at: 16-09-2026In-Stock | SupplierPolandTrusted supplier — member since 2023, 50–99 employees | Warranty 3 months | |
 | Condition New Factory Sealed | Availability On requestLead time: 5 days | Supplier GermanyTrusted supplier — member since 2024 | Warranty Not specified | |
 | Condition New Factory Sealed | Availability On requestLead time to be confirmed | Supplier ItalyTrusted supplier — member since 2021, 10–19 employees | Warranty 12 months |
Offer with manufacturer lead time
Directly from the manufacturer - with a confirmed, predictable, and fully transparent delivery time.
Documents
Data Sheet
Datasheet for Siemens 3RT2045-3KB40, including specifications and features.
CAD Models
3D CAD model and technical drawings, ready for your design software.
Product data updated: 16-09-2026
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