3RU2126-4BB0
Image for illustration purposes only.
If you're unsure whether this part is a perfect match, please contact us.
| Condition | Warehouse | Stock | Price | |
|---|---|---|---|---|
|
New Sealed
Full 24 months warranty Est. shipping: July 23 2026 |
WM62-3R | 80+ in stock | £23.00 | Add to Cart |
|
New Sealed
Full 24 months warranty Est. shipping: July 27 2026 |
WM76-3R | 80+ in stock | £24.50 | Add to Cart |
|
New Sealed
Full 24 months warranty Est. shipping: August 17 2026 |
WM66-3R | Enquire now | £31.00 | Add to Cart |
|
New Sealed
Full 24 months warranty Est. shipping: July 14 2026 |
WM22-3R | 20+ in stock | £51.00 | Add to Cart |
|
New Sealed
Full 24 months warranty Est. shipping: July 14 2026 |
WM24-3R | 20+ in stock | - | Get Quote |
|
New
Full 12 months warranty Est. shipping: July 13 2026 |
WM83-3R | Low stock | £31.50 | Add to Cart |
|
New
Full 12 months warranty Est. shipping: July 17 2026 |
WM89-3R | 10+ in stock | £51.50 | Add to Cart |
|
New
Full 12 months warranty Est. shipping: August 10 2026 |
WM74-3R | 10+ in stock | £53.00 | Add to Cart |
|
New
Full 12 months warranty Est. shipping: July 14 2026 |
WM34-3R | Low stock | - | Get Quote |
|
New
Full 12 months warranty Est. shipping: July 16 2026 |
WM44-3R | Low stock | - | Get Quote |
|
New
Full 12 months warranty Est. shipping: July 20 2026 |
WM59-3R | Enquire now | - | Get Quote |
|
New
Full 12 months warranty Est. shipping: July 16 2026 |
WM61-3R | 45+ in stock | - | Get Quote |
|
Used
Full 12 months warranty Est. shipping: July 14 2026 |
WM75-3R | Low stock | £26.50 | Add to Cart |
|
Used
Full 12 months warranty Est. shipping: July 13 2026 |
WM19-3R | Low stock | - | Get Quote |
|
Used
Full 12 months warranty Est. shipping: July 14 2026 |
WM34-3R | Enquire now | - | Get Quote |
|
Used
Full 12 months warranty Est. shipping: July 16 2026 |
WM44-3R | Low stock | - | Get Quote |
| Buying more than one? | Get Quote | |||
Full 12 months warranty
The 3RU2126-4BB0 is a thermal overload relay designed for current-dependent overload protection in electrical main circuits. It features screw terminals and supports motor protection with a contact rating suitable for 14 to 20 amperes and up to 7.5 kW capacity. The relay is available in size S0, with both normally open (NO) and normally closed (NC) contacts, making it suitable for various control applications. It is part of the Sirius 3RU2 series and is used to safeguard equipment by interrupting the circuit during overload conditions.
Siemens is a global leader in industrial automation, digitalisation, and electrification, offering products such as PLCs, drives, industrial robots, and process control systems. Known for innovation and sustainability, Siemens’ technologies enhance efficiency, safety, and performance across industries like manufacturing, energy, and healthcare.
***CJS Automation is NOT an authorised distributor of Siemens***
Get a Quote
What Happens Next?
Email Confirmation
We’ll send you an email confirming that we’ve received your enquiry and are processing your request.
Dedicated Account Manager
A member of our team will be in contact to confirm the part(s), specifications, and condition.
Your Quote
You will receive a comprehensive quote tailored to your specific needs.
Track Your Shipment
You'll receive tracking details once your order ships so you can follow it's progress.
Online Payments Accepted
If you're happy with your quote, you can pay by Bank Transfer or through our secure payment page using any of the following payment methods, just enter your invoice number and follow the on-screen instructions.
Other Siemens Parts
Closest part codes available to buy online.
GB 
US 
DE 
DK 
ES 
FI 
FR 
IT 
NL 
NO 
PT 
SE