3RV2042-4JB10
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: August 12 2026 |
WM66-3R | Enquire now | £214.00 | Add to Cart |
|
New Sealed
Full 24 months warranty Est. shipping: July 15 2026 |
WM59-3R | Low stock | - | Get Quote |
|
New Sealed
Full 24 months warranty Est. shipping: July 14 2026 |
WM44-3R | 10+ in stock | - | Get Quote |
|
New
Full 12 months warranty Est. shipping: July 14 2026 |
WM44-3R | Low stock | - | Get Quote |
|
Used
Full 12 months warranty Est. shipping: July 14 2026 |
WM44-3R | Low stock | - | Get Quote |
| Buying more than one? | Get Quote | |||
Full 12 months warranty
The 3RV2042-4JB10 is a thermal-magnetic motor protection circuit breaker designed for motor protection applications. It belongs to the S3 size category and features a current release range of approximately 45 to 63 A with a rated current of 20 A. The breaker offers increased switching capacity of up to 100 kA and is equipped with screw terminals for secure connections. It is part of the SIRIUS 3RV20 series and functions as both a circuit breaker and a manual motor starter protector, suitable for integrating with contactors and disconnector functionalities as per specific system requirements.
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