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The Siemens FUSÍVEL DIAZED GL DIII 50A 5SB421 is a high-performance industrial fuse link designed to provide reliable protection for low-voltage electrical distribution systems. Part of the Siemens SENTRON protection range, this Diazed fuse ensures safe interruption of overload and short-circuit currents, making it ideal for demanding industrial and commercial applications. With a 50A rated current and DIII size construction, it is widely used in power distribution panels, motor control circuits, and heavy-duty electrical installations where consistent safety and operational reliability are essential.
Key Features
gG (GL) characteristic for reliable overload and short-circuit protection
High breaking capacity ensures safe interruption of fault currents
Compatible with Siemens SENTRON DIAZED fuse systems for easy integration
Robust ceramic body for excellent thermal and mechanical durability
Suitable for industrial automation, power distribution, and motor protection systems
Specifications
Type: Diazed fuse link (gG / GL general-purpose protection)
Rated Current: 50A
Rated Voltage: 500V AC / DC
Fuse Size: DIII (DIAZED system)
Breaking Capacity: Up to 50 kA (IEC 60269 standards)
Body Material: High-strength ceramic
Application: Industrial electrical systems, control panels, and power distribution
Standards: IEC 60269 / VDE compliant
The Siemens FUSÍVEL DIAZED GL DIII 50A 5SB421 delivers dependable circuit protection with Siemens’ trusted engineering quality, ensuring long service life and stable performance in critical electrical installations. It is a reliable choice for industrial automation and power distribution systems. For genuine Siemens products, contact Ram Automations at info@ramautomations.com.
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
