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Mercury 6 x 32mm T2.5A Slow Blow Fuses - 250V IEC Compliant

£149
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Description

Mercury T2.5A slow blow fuses use a 6 x 32mm glass tube with nickel-plated end caps and a time-delay wire element rated at 250V. The slow blow (time-delay) characteristic allows the fuse to tolerate short-duration current surges during power-on or motor start-up without blowing, while still interrupting sustained overcurrent or short-circuit faults.

These fuses are used in amplifiers, power supplies, DJ equipment, stage lighting controllers, and AV gear where the initial inrush current can be several times the normal operating current for a fraction of a second. The 2.5A rating suits low-power signal equipment, small transformers and switched-mode power supplies drawing up to approximately 600W on a 240V circuit.

The 6 x 32mm dimension is a standard IEC glass fuse size, fitting fuseholders and fuse clips on equipment PCBs, panel-mounted fuseholders, and inline cable fuseholders. The glass tube allows visual inspection of the element — a broken wire or blackened glass indicates the fuse has blown. The nickel-plated end caps ensure reliable contact and resist corrosion in indoor environments.

Frequently Asked

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

Slow blow (time-delay) fuses tolerate brief overcurrent surges lasting milliseconds to a few seconds, making them suitable for inductive loads (transformers, motors) and equipment with high inrush current at power-on. Fast blow fuses interrupt immediately when current exceeds the rated value, protecting sensitive electronics from even brief overcurrent.

What does T2.5A mean?

T indicates time-delay (slow blow) construction. 2.5A is the rated current — the fuse will carry 2.5A continuously without blowing, and will tolerate brief surges above that level depending on duration and magnitude.

Can these be used in 240V mains equipment?

Yes. The 250V rating covers UK 230V mains voltage with safety margin. These fuses are commonly used on the low-voltage side of transformers and power supplies, or in mains-powered equipment drawing under 2.5A.

How do I know if a fuse has blown?

The glass tube allows visual inspection. A blown fuse shows a broken wire element inside the tube, often with blackened or discoloured glass if the fault current was high. If the wire appears intact and the glass is clear, the fuse is likely still functional.

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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    Description

    Mercury T2.5A slow blow fuses use a 6 x 32mm glass tube with nickel-plated end caps and a time-delay wire element rated at 250V. The slow blow (time-delay) characteristic allows the fuse to tolerate short-duration current surges during power-on or motor start-up without blowing, while still interrupting sustained overcurrent or short-circuit faults.

    These fuses are used in amplifiers, power supplies, DJ equipment, stage lighting controllers, and AV gear where the initial inrush current can be several times the normal operating current for a fraction of a second. The 2.5A rating suits low-power signal equipment, small transformers and switched-mode power supplies drawing up to approximately 600W on a 240V circuit.

    The 6 x 32mm dimension is a standard IEC glass fuse size, fitting fuseholders and fuse clips on equipment PCBs, panel-mounted fuseholders, and inline cable fuseholders. The glass tube allows visual inspection of the element — a broken wire or blackened glass indicates the fuse has blown. The nickel-plated end caps ensure reliable contact and resist corrosion in indoor environments.

    Frequently Asked

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

    Slow blow (time-delay) fuses tolerate brief overcurrent surges lasting milliseconds to a few seconds, making them suitable for inductive loads (transformers, motors) and equipment with high inrush current at power-on. Fast blow fuses interrupt immediately when current exceeds the rated value, protecting sensitive electronics from even brief overcurrent.

    What does T2.5A mean?

    T indicates time-delay (slow blow) construction. 2.5A is the rated current — the fuse will carry 2.5A continuously without blowing, and will tolerate brief surges above that level depending on duration and magnitude.

    Can these be used in 240V mains equipment?

    Yes. The 250V rating covers UK 230V mains voltage with safety margin. These fuses are commonly used on the low-voltage side of transformers and power supplies, or in mains-powered equipment drawing under 2.5A.

    How do I know if a fuse has blown?

    The glass tube allows visual inspection. A blown fuse shows a broken wire element inside the tube, often with blackened or discoloured glass if the fault current was high. If the wire appears intact and the glass is clear, the fuse is likely still functional.

    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.