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Mercury 6 x 32mm T3.15A Slow Blow Fuses - Glass Tube (Pack of 10)

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

The Mercury T3.15A is a 6 x 32mm slow blow glass fuse with nickel-plated brass end caps, rated at 3.15A and 250V. The slow blow (time-delay) design allows short inrush currents during equipment start-up without blowing the fuse, while still providing overcurrent protection if a sustained fault develops.

Designed for low-current circuits in audio equipment, lighting controllers, small appliances and electronic devices where motors, transformers or capacitive loads create momentary current spikes on power-up. The 6 x 32mm form factor fits standard fuse holders used across consumer electronics, automotive applications and industrial control panels. The glass tube allows visual inspection of the fuse element to confirm whether the fuse has blown.

Each fuse is IEC approved and carries nickel-plated brass end caps that resist corrosion and maintain consistent contact pressure in the holder. The slow blow characteristic typically tolerates inrush currents up to 10x the rated 3.15A for short periods (measured in milliseconds), making it suitable for circuits where nuisance blowing with fast-acting fuses is a recurring problem.

Frequently Asked

What's the difference between slow blow and fast-acting fuses?

Slow blow (time-delay) fuses tolerate short current surges without breaking the circuit, making them suitable for equipment with motors or transformers that draw higher current on start-up. Fast-acting fuses blow immediately when the rated current is exceeded, providing faster protection for sensitive electronics but less tolerance for inrush.

What voltage rating does the fuse carry?

The T3.15A is rated at 250V. This is the maximum voltage the fuse can safely interrupt if a fault occurs. Using it in circuits above 250V risks arc-over and failure to interrupt the fault.

How many fuses are in a pack?

Mercury 6 x 32mm fuses are typically supplied in packs of 10. Confirm the pack quantity in the product specification or on the packaging when the item arrives.

Can I use this fuse in a car?

The 6 x 32mm glass fuse is a common automotive fuse size and the 250V rating exceeds typical 12V or 24V automotive systems. However, confirm the amperage requirement of the circuit before fitting — a 3.15A fuse is only suitable for low-draw circuits like interior lights or control modules.

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.

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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.

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    Description

    The Mercury T3.15A is a 6 x 32mm slow blow glass fuse with nickel-plated brass end caps, rated at 3.15A and 250V. The slow blow (time-delay) design allows short inrush currents during equipment start-up without blowing the fuse, while still providing overcurrent protection if a sustained fault develops.

    Designed for low-current circuits in audio equipment, lighting controllers, small appliances and electronic devices where motors, transformers or capacitive loads create momentary current spikes on power-up. The 6 x 32mm form factor fits standard fuse holders used across consumer electronics, automotive applications and industrial control panels. The glass tube allows visual inspection of the fuse element to confirm whether the fuse has blown.

    Each fuse is IEC approved and carries nickel-plated brass end caps that resist corrosion and maintain consistent contact pressure in the holder. The slow blow characteristic typically tolerates inrush currents up to 10x the rated 3.15A for short periods (measured in milliseconds), making it suitable for circuits where nuisance blowing with fast-acting fuses is a recurring problem.

    Frequently Asked

    What's the difference between slow blow and fast-acting fuses?

    Slow blow (time-delay) fuses tolerate short current surges without breaking the circuit, making them suitable for equipment with motors or transformers that draw higher current on start-up. Fast-acting fuses blow immediately when the rated current is exceeded, providing faster protection for sensitive electronics but less tolerance for inrush.

    What voltage rating does the fuse carry?

    The T3.15A is rated at 250V. This is the maximum voltage the fuse can safely interrupt if a fault occurs. Using it in circuits above 250V risks arc-over and failure to interrupt the fault.

    How many fuses are in a pack?

    Mercury 6 x 32mm fuses are typically supplied in packs of 10. Confirm the pack quantity in the product specification or on the packaging when the item arrives.

    Can I use this fuse in a car?

    The 6 x 32mm glass fuse is a common automotive fuse size and the 250V rating exceeds typical 12V or 24V automotive systems. However, confirm the amperage requirement of the circuit before fitting — a 3.15A fuse is only suitable for low-draw circuits like interior lights or control modules.

    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.