5SY6640-7
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 13 2026 |
WM66-5S | Enquire now | £46.00 | Add to Cart |
|
New Sealed
Full 24 months warranty Est. shipping: July 16 2026 |
WM59-5S | Low stock | - | Get Quote |
|
New Sealed
Full 24 months warranty Est. shipping: July 15 2026 |
WM44-5S | 10+ in stock | - | Get Quote |
|
New
Full 12 months warranty Est. shipping: July 20 2026 |
WM74-5S | Low stock | £98.50 | Add to Cart |
|
New
Full 12 months warranty Est. shipping: July 15 2026 |
WM44-5S | 20+ in stock | - | Get Quote |
|
Used
Full 12 months warranty Est. shipping: July 15 2026 |
WM44-5S | 20+ in stock | - | Get Quote |
| Buying more than one? | Get Quote | |||
Full 12 months warranty
The 5SY6640-7 is a miniature circuit breaker designed for electrical protection applications. It features a 3+N pole configuration with a total of four poles, suitable for mounting on a DIN rail. The breaker operates at a rated voltage of 400V AC and 72V DC, with a rated current of 40A. It has a switching capacity of 6 kA according to EN 60898 standards and is characterized by a Type C trip characteristic. This device is part of the SENTRON series and is engineered to provide reliable circuit protection in various electrical systems.
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