Siemens Overload Relay: Thermal Protection, 3 Poles, 1NO/1NC, Frame Size S0
The SIEMENS Overload Relay is an IEC thermal overload relay from the SIRIUS series, designed for frame size S0 contactors. It features integrated bimetallic elements, screw terminals, and a 1NO/1NC auxiliary contact…
SKU 3G-OTH-40409
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 from the SIRIUS series, designed for frame size S0 contactors. It features integrated bimetallic elements, screw terminals, and a 1NO/1NC auxiliary contact form, with a maximum voltage rating of 690V AC and a current range of 1.8 A to 2.5 A.
Frequently Asked Questions
What is the SIEMENS 3RU21261CB0 overload relay used for?
The SIEMENS 3RU21261CB0 is an IEC thermal overload relay from the SIRIUS series, used to protect motors from overload and phase loss by monitoring current through integrated bimetallic elements. It is designed for frame size S0 contactors and is common in industrial automation, pump control, and HVAC applications.
What are the specifications of the SIEMENS 3RU21261CB0 overload relay?
The SIEMENS 3RU21261CB0 is a 3-pole thermal overload relay with a current range of 1.8 A to 2.5 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 is compatible with SIRIUS contactors of frame size S0.
Where to buy the SIEMENS 3RU21261CB0 overload relay worldwide?
3G Electric supplies the SIEMENS 3RU21261CB0 overload relay to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this SIRIUS series thermal overload relay.
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 amperage. For the 3RU21261CB0, the range is 1.8 A to 2.5 A. Ensure the relay's frame size (S0) matches your contactor and that the auxiliary contact configuration (1NO/1NC) meets your control circuit needs.
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Common applications for SiemensSiemens Products
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.
