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Siemens 3RU2146-4LB1
THERMAL OVERLOAD RELAY 70...90 A
Product Description
The thermal overload relay operates within a current range of 70 to 90 A, specifically designed for motor protection with a size classification of S3 and a trip class of 10. It features a stand-alone mounting option, facilitating easy installation in various setups.
Key specifications include an IP20 insulation rating, ensuring protection against solid objects, and a contact configuration of 1 normally open and 1 normally closed. The relay is capable of handling environmental conditions ranging from -40 °C to 70 °C, making it suitable for diverse applications.
With a full load current rating of 77 A and a contact rating of B600 / R300, this unit is equipped with both manual and automatic reset functions. The dimensions of the relay are 0.07 m, 0.12 m, and 0.14 m, allowing for compact integration into control systems. The device originates from Germany, reflecting high-quality manufacturing standards.
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Offer details
- Offer from:
Trusted supplier — Germany, member since 2022 - Availability:
- 1 pc.Updated at: 10-03-2026In-Stock
- Warranty:
- 1 month
- Condition:
- Used
Specifications
- Brand
- Siemens
- Insulation
- IP20
- Number of Poles
- 3
- Trip Type
- CLASS 10
- Contact Rating
- B600 / R300
- Type
- thermal overload relay
- Environmental Conditions
- -55
Available Offers
(4)| Condition | Availability | Supplier | Warranty | Action | |
|---|---|---|---|---|---|
 | Condition Used | Availability 1 pc. Updated at: 10-03-2026In-Stock | SupplierGermanyTrusted supplier — member since 2022 | Warranty 1 month | |
| Condition New Surplus | Availability 3 pcs. Updated at: 15-09-2026In-Stock | SupplierGermanyTrusted supplier — member since 2024 | Warranty 24 months | |
| Condition New Factory Sealed | Availability On requestLead time: 3 days | SupplierGermanyTrusted 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 3RU2146-4LB1, including specifications and features.
CAD Models
3D CAD model and technical drawings, ready for your design software.
Product data updated: 10-03-2026
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