It is a 5A Glass fuse. It is an electrical safety device that operates to provide overcurrent protection to an electrical circuit. It measures approximately 20 mm long by 5 mm in diameter (5x20mm) making it compatible with 5x20 fuse holders.
Because the fuse is made of glass, one can see the inside of the fuse so it is easy to determine if the fuse has blown or not. This particular fuse is “T” speed rated which means it is a slow-acting fuse, sometimes referred to as anti-surge. It can tolerate higher levels for a short period, without shorting.
Product Description of 5A Glass Fuse - 5x20mm

Features of 5A Glass Fuse - 5x20mm
Package Contents
1 × 5A Glass Fuse - 5x20mm
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
If you receive a product damaged during shipment, please notify us within 3 days of receiving the product, supported by proper pictures and a description. Once our support team accepts the return, we will provide a replacement or a complete refund, including the return shipping cost.
If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.
We don’t accept returns for products damaged due to improper use. Moreover, we don’t accept returns if the ordered product is not suitable for a specific application. Please read the product specifications and datasheet carefully before placing an order. Returns are accepted only within 3 days from the date of delivery.
We ship all over India with free shipping on all prepaid orders above ₹500. For Cash on Delivery (COD) orders, ₹80 will be charged for orders below ₹599 and ₹30 for orders above ₹599.
For any questions related to shipping, please contact our support team at support@quartzcomponents.com.
Note: The minimum order value for COD orders is ₹500.