5SL4450-8
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 04 2026 |
WM66-5S | Enquire now | £71.50 | Add to Cart |
|
New Sealed
Full 24 months warranty Est. shipping: July 07 2026 |
WM59-5S | Low stock | - | Get Quote |
|
New Sealed
Full 24 months warranty Est. shipping: July 06 2026 |
WM44-5S | 10+ in stock | - | Get Quote |
|
New
Full 12 months warranty Est. shipping: July 06 2026 |
WM44-5S | Low stock | - | Get Quote |
|
New
Full 12 months warranty Est. shipping: July 06 2026 |
WM61-5S | Low stock | - | Get Quote |
|
Used
Full 12 months warranty Est. shipping: July 06 2026 |
WM44-5S | Low stock | - | Get Quote |
| Buying more than one? | Get Quote | |||
Full 12 months warranty
The Siemens 5SL4450-8 is a miniature circuit breaker designed for electrical protection. It features a 4-pole configuration with a rated current of 50A and a voltage capacity of 400V AC. The breaker has a breaking capacity of 10kA and is suitable for applications requiring overvoltage category III and pollution degree 2 conditions. Its dimensions include a height of 90 mm, width of 72 mm, and depth of 76 mm, with a recessed depth of 70 mm. This device is engineered to provide reliable circuit interruption and safety in 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