Free Delivery on all orders over £99*

Mercury 630mA Quick Blow Fuse 6 x 32mm 250V - F630mA

£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 F630mA is a 630mA quick blow fuse in a 6 x 32mm glass tube format with nickel-plated brass end caps, rated for 250V AC/DC circuits. Quick blow fuses respond to overcurrent within milliseconds, cutting power before damage occurs to sensitive components in audio equipment, amplifiers, control circuits and low-current electronic devices.

Designed for applications where fault current must be interrupted faster than a standard slow-blow fuse would allow, the F630mA suits AV equipment, PA systems, instrumentation, and low-voltage DC circuits where a 630mA threshold provides appropriate protection. The 6 x 32mm dimension is a common IEC format compatible with standard panel-mount and inline fuse holders across European and international equipment.

The glass tube body allows visual inspection of the internal fuse element to confirm whether the fuse has blown without removing it from the holder. The nickel-plated brass end caps provide consistent contact resistance and resist corrosion in humid environments. The 250V rating covers mains AC circuits as well as lower-voltage DC applications, though the actual breaking capacity depends on the circuit voltage and impedance.

Frequently Asked

What does 'quick blow' mean?

Quick blow (also called fast-acting or F-type) fuses open the circuit within milliseconds of detecting overcurrent. This is faster than standard or slow-blow fuses, making them suitable for protecting sensitive electronics that cannot tolerate even brief overloads.

What applications use 630mA fuses?

Typical uses include low-power audio equipment, guitar amplifiers, mixers, control circuit boards, instrumentation, and DC power supplies where the normal operating current is well below 630mA and the fuse provides fault protection rather than load switching.

Are these fuses reusable?

No. Once a fuse has blown it must be replaced. The internal fuse element melts to break the circuit and cannot be restored.

Will this fit standard 6 x 32mm fuse holders?

Yes. The 6 x 32mm dimension is an IEC standard and the fuse fits any compliant panel-mount holder, inline holder or PCB-mount clip designed for this size.

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 F630mA is a 630mA quick blow fuse in a 6 x 32mm glass tube format with nickel-plated brass end caps, rated for 250V AC/DC circuits. Quick blow fuses respond to overcurrent within milliseconds, cutting power before damage occurs to sensitive components in audio equipment, amplifiers, control circuits and low-current electronic devices.

    Designed for applications where fault current must be interrupted faster than a standard slow-blow fuse would allow, the F630mA suits AV equipment, PA systems, instrumentation, and low-voltage DC circuits where a 630mA threshold provides appropriate protection. The 6 x 32mm dimension is a common IEC format compatible with standard panel-mount and inline fuse holders across European and international equipment.

    The glass tube body allows visual inspection of the internal fuse element to confirm whether the fuse has blown without removing it from the holder. The nickel-plated brass end caps provide consistent contact resistance and resist corrosion in humid environments. The 250V rating covers mains AC circuits as well as lower-voltage DC applications, though the actual breaking capacity depends on the circuit voltage and impedance.

    Frequently Asked

    What does 'quick blow' mean?

    Quick blow (also called fast-acting or F-type) fuses open the circuit within milliseconds of detecting overcurrent. This is faster than standard or slow-blow fuses, making them suitable for protecting sensitive electronics that cannot tolerate even brief overloads.

    What applications use 630mA fuses?

    Typical uses include low-power audio equipment, guitar amplifiers, mixers, control circuit boards, instrumentation, and DC power supplies where the normal operating current is well below 630mA and the fuse provides fault protection rather than load switching.

    Are these fuses reusable?

    No. Once a fuse has blown it must be replaced. The internal fuse element melts to break the circuit and cannot be restored.

    Will this fit standard 6 x 32mm fuse holders?

    Yes. The 6 x 32mm dimension is an IEC standard and the fuse fits any compliant panel-mount holder, inline holder or PCB-mount clip designed for this size.

    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.