Siemens Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, Frame Size S0
The SIEMENS Overload Relay is an IEC thermal overload relay with integrated bimetallic elements, designed for frame size S0 and compatible with SIRIUS contactors. It features a 1NO/1NC auxiliary contact form, screw…
SKU 3G-OTH-40449
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The SIEMENS Overload Relay is an IEC thermal overload relay with integrated bimetallic elements, designed for frame size S0 and compatible with SIRIUS contactors. It features a 1NO/1NC auxiliary contact form, screw terminals, and a maximum voltage rating of 690V AC. This 3-pole relay covers a current range of 2.2 A to 3.2 A and does not include phase loss sensitivity.
Frequently Asked Questions
What is the SIEMENS 3RU21261DB0 overload relay used for?
The SIEMENS 3RU21261DB0 is an IEC thermal overload relay used to protect motors from overload and phase loss in industrial applications. It integrates bimetallic elements for thermal protection and is designed for use with SIRIUS contactors in frame size S0, commonly found in pumps, conveyors, and compressors.
What are the specifications of the SIEMENS 3RU21261DB0 overload relay?
The SIEMENS 3RU21261DB0 is a 3-pole thermal overload relay with a current range of 2.2 A to 3.2 A, frame size S0, and a maximum voltage rating of 690V AC. It features 1NO/1NC auxiliary contacts, screw terminals, and integrated bimetallic elements. It does not include phase loss sensitivity.
Where to buy the SIEMENS 3RU21261DB0 overload relay worldwide?
You can source the SIEMENS 3RU21261DB0 overload relay worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine Siemens components for industrial applications.
How to select the correct SIEMENS overload relay for a motor?
To select the correct SIEMENS overload relay, match the relay's current range to the motor's full-load current. For the 3RU21261DB0, the range is 2.2 A to 3.2 A. Ensure the frame size (S0) is compatible with your contactor series (SIRIUS). Use screw terminals for wiring and verify the voltage rating (690V AC) meets your system requirements.
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3G Electric supplies Siemens iec thermal overload relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
