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Mercury 6 x 32mm F8A Quick Blow Fuses - 250V IEC

£149
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Mercury F8A is a 6 x 32mm quick blow fuse rated at 8A 250V, designed to interrupt circuits within milliseconds of an overcurrent event. The glass tube body houses a thin wire element that melts instantly under fault conditions, protecting downstream components from thermal and electrical damage.

Quick blow fuses are specified for circuits feeding sensitive electronics where a sustained overload, even for a fraction of a second, could damage semiconductors or circuit boards. Common applications include PA amplifiers, audio mixing desks, studio monitors, DJ equipment, CCTV power supplies and low-voltage lighting controllers. The 6 x 32mm form factor fits standard panel-mount and PCB fuse holders used across AVSL, Adastra and Citronic equipment.

The fuse meets IEC 60127 standards for miniature fuses and carries a 250V voltage rating, suitable for both UK 230V mains and 110V site transformer circuits. The glass body allows visual inspection of the element without removing the fuse from the holder — a blown fuse shows a broken wire or blackened glass. Each fuse measures 6mm diameter by 32mm length, with nickel-plated brass end caps providing low-resistance contact.

Frequently Asked

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

Quick blow fuses interrupt within milliseconds of exceeding their rated current, protecting sensitive electronics. Slow blow (time-delay) fuses tolerate brief inrush currents from motors or transformers before blowing, making them unsuitable for semiconductor protection.

What current does the F8A handle?

The fuse is rated at 8A continuous. It will blow instantly if the current exceeds approximately 16A (twice the rated current), and within seconds at currents between 10-14A depending on ambient temperature.

Are these fuses sold individually or in packs?

Check the product quantity selector and price per unit at the top of the page. AVSL Mercury fuses are typically supplied in packs rather than as single units.

Can I use a higher-rated fuse if the 8A keeps blowing?

No. If an 8A fuse blows repeatedly, the circuit has a fault or the equipment draws more current than the original designer intended. Fitting a higher-rated fuse removes the protection and risks damaging components or creating a fire hazard.

Shipping & Returns

Free worldwide delivery

Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

Returns

30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.

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    Description

    The Mercury F8A is a 6 x 32mm quick blow fuse rated at 8A 250V, designed to interrupt circuits within milliseconds of an overcurrent event. The glass tube body houses a thin wire element that melts instantly under fault conditions, protecting downstream components from thermal and electrical damage.

    Quick blow fuses are specified for circuits feeding sensitive electronics where a sustained overload, even for a fraction of a second, could damage semiconductors or circuit boards. Common applications include PA amplifiers, audio mixing desks, studio monitors, DJ equipment, CCTV power supplies and low-voltage lighting controllers. The 6 x 32mm form factor fits standard panel-mount and PCB fuse holders used across AVSL, Adastra and Citronic equipment.

    The fuse meets IEC 60127 standards for miniature fuses and carries a 250V voltage rating, suitable for both UK 230V mains and 110V site transformer circuits. The glass body allows visual inspection of the element without removing the fuse from the holder — a blown fuse shows a broken wire or blackened glass. Each fuse measures 6mm diameter by 32mm length, with nickel-plated brass end caps providing low-resistance contact.

    Frequently Asked

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

    Quick blow fuses interrupt within milliseconds of exceeding their rated current, protecting sensitive electronics. Slow blow (time-delay) fuses tolerate brief inrush currents from motors or transformers before blowing, making them unsuitable for semiconductor protection.

    What current does the F8A handle?

    The fuse is rated at 8A continuous. It will blow instantly if the current exceeds approximately 16A (twice the rated current), and within seconds at currents between 10-14A depending on ambient temperature.

    Are these fuses sold individually or in packs?

    Check the product quantity selector and price per unit at the top of the page. AVSL Mercury fuses are typically supplied in packs rather than as single units.

    Can I use a higher-rated fuse if the 8A keeps blowing?

    No. If an 8A fuse blows repeatedly, the circuit has a fault or the equipment draws more current than the original designer intended. Fitting a higher-rated fuse removes the protection and risks damaging components or creating a fire hazard.

    Shipping & Returns

    Free worldwide delivery

    Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

    Returns

    30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.