Free Delivery on all orders over £99*

Mercury 6 x 32mm F2.5A Quick Blow Fuses - Pack of 6

£149
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
We are an Independent UK Company
Price match. Found it cheaper? Contact us
Trade Discount Available
Description

The Mercury F2.5A is a 6 x 32mm fast-acting glass tube fuse rated at 2.5 amps and 250V AC. Designed as a quick blow type, the fuse element melts within milliseconds when current exceeds the 2.5A threshold, providing immediate protection for sensitive electronics, control circuits and low-power equipment. Sold in packs of six.

Quick blow fuses are used in circuits where rapid fault response is critical to prevent component damage from even brief overcurrent conditions. Common applications include bench power supplies, amplifier protection circuits, LED driver protection, test equipment, automotive electronics and AV distribution units where typical loads sit well below 2.5A and any overcurrent indicates a fault condition rather than a normal transient.

The 6 x 32mm dimension is a standard cartridge fuse size widely used in European and UK equipment, fitting most panel-mount fuseholders, inline fuseholders and PCB-mount clips rated for this body size. The glass tube allows visual inspection of the fuse element without removal — a blown fuse shows a broken wire and often discolouration inside the tube. IEC compliance ensures the breaking capacity meets international standards for safe operation at the rated 250V.

Frequently Asked

What's the difference between quick blow and slow blow fuses?

Quick blow fuses react within milliseconds to any overcurrent, making them suitable for sensitive electronics where even a brief overload can cause damage. Slow blow (time-delay) fuses tolerate short inrush currents during motor or transformer start-up, only breaking if the overcurrent persists for several seconds.

Can I use a higher-rated fuse if I don't have a 2.5A to hand?

No. Using a higher-rated fuse (e.g. 3A or 5A) removes the circuit protection the 2.5A fuse was providing. If the original specification calls for 2.5A, the circuit designer calculated that value to protect specific components downstream. Exceeding it risks equipment damage or fire.

How do I know if the fuse has blown?

The glass body allows visual inspection. A blown fuse shows a broken wire element inside the tube, often with black discolouration on the glass from the arc that occurred when the element melted. If you cannot see the element clearly, use a multimeter on continuity mode to confirm.

Are these suitable for automotive use?

The 250V AC rating means these are designed for mains-voltage circuits, not 12V or 24V automotive systems. While the physical size may fit some automotive fuseholders, automotive environments typically require blade-type fuses (ATO/ATC) or mini/micro blade fuses rated for DC interruption and vibration resistance.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

See it lit, in person

Lighting looks different in a real room. Come and see our range at our showrooms in Birmingham, Hong Kong and Dubai, or talk to our design team wherever you are.

Niori lighting showroom trailer video with closeups of alabaster lighting

Why Niori

Over 20 years lighting homes worldwide

We are a specialist lighting and mirror retailer with showrooms in Birmingham, Hong Kong and Dubai, shipping to customers around the world. Our own design team is here to help, from first idea to final fitting.

Genuine products

An authorised stockist

Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Ordering with us

Free delivery over £99

Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

Design help

Not sure what you need?

Our design team can help you plan your lighting, share photos and videos of stock, and send samples worldwide. Book a showroom visit in Birmingham, Hong Kong or Dubai, or ask about our lighting design service.

You Might Also Like

Recommended For You

    Our Reviews

    From first click to final installation, our customers share how Niori lights up their spaces. Read their words and envision what’s possible for yours.

    Featured Projects

    Step into our portfolio and see how we transform homes, restaurants, and commercial spaces and more, worldwide. Click here for a closer look at our latest projects.

    Description

    The Mercury F2.5A is a 6 x 32mm fast-acting glass tube fuse rated at 2.5 amps and 250V AC. Designed as a quick blow type, the fuse element melts within milliseconds when current exceeds the 2.5A threshold, providing immediate protection for sensitive electronics, control circuits and low-power equipment. Sold in packs of six.

    Quick blow fuses are used in circuits where rapid fault response is critical to prevent component damage from even brief overcurrent conditions. Common applications include bench power supplies, amplifier protection circuits, LED driver protection, test equipment, automotive electronics and AV distribution units where typical loads sit well below 2.5A and any overcurrent indicates a fault condition rather than a normal transient.

    The 6 x 32mm dimension is a standard cartridge fuse size widely used in European and UK equipment, fitting most panel-mount fuseholders, inline fuseholders and PCB-mount clips rated for this body size. The glass tube allows visual inspection of the fuse element without removal — a blown fuse shows a broken wire and often discolouration inside the tube. IEC compliance ensures the breaking capacity meets international standards for safe operation at the rated 250V.

    Frequently Asked

    What's the difference between quick blow and slow blow fuses?

    Quick blow fuses react within milliseconds to any overcurrent, making them suitable for sensitive electronics where even a brief overload can cause damage. Slow blow (time-delay) fuses tolerate short inrush currents during motor or transformer start-up, only breaking if the overcurrent persists for several seconds.

    Can I use a higher-rated fuse if I don't have a 2.5A to hand?

    No. Using a higher-rated fuse (e.g. 3A or 5A) removes the circuit protection the 2.5A fuse was providing. If the original specification calls for 2.5A, the circuit designer calculated that value to protect specific components downstream. Exceeding it risks equipment damage or fire.

    How do I know if the fuse has blown?

    The glass body allows visual inspection. A blown fuse shows a broken wire element inside the tube, often with black discolouration on the glass from the arc that occurred when the element melted. If you cannot see the element clearly, use a multimeter on continuity mode to confirm.

    Are these suitable for automotive use?

    The 250V AC rating means these are designed for mains-voltage circuits, not 12V or 24V automotive systems. While the physical size may fit some automotive fuseholders, automotive environments typically require blade-type fuses (ATO/ATC) or mini/micro blade fuses rated for DC interruption and vibration resistance.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.