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Mercury DC Extension Lead 2.1mm x 5.5mm - 3m

£199
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Mercury 3m DC extension lead uses a 2.1mm x 5.5mm barrel plug on one end and a matching socket on the other, extending the power reach between a DC supply and a device by three metres. The cable is rated for up to 30V and 5A, making it compatible with 12V and 24V DC systems commonly used in CCTV cameras, LED strip lighting, audio equipment and small electronics.

Designed for installations where the power supply sits further from the device than the original cable allows, the extension adds reach without requiring a second transformer or re-routing existing infrastructure. Typical applications include CCTV cameras mounted several metres from the DVR, LED strips running along shelving or cabinetry where the driver is centrally located, and desk setups where a laptop or monitor power supply needs to sit further from the wall socket.

The 2.8mm diameter cable is lighter and more flexible than thicker power cable, allowing it to be routed behind skirting boards, through cable conduit or along architrave without bulking. The black PVC jacket resists abrasion and UV exposure in indoor installations. The barrel connectors use a centre-positive configuration, which is standard for most DC-powered consumer electronics, but polarity should be checked before connecting to ensure compatibility.

At 52g total weight the lead does not add significant load when cable-tied to existing runs or suspended on cable clips. The 3m length is a common extension increment that suits room-scale installations without introducing excessive cable slack or voltage drop over typical 12V loads under 3A.

Specification
Voltage Up to 30V
Current Up to 5A
Colour Black
DC plug 2.1 x 5.5mm
Cable : diameter 2.8mm
Length 3.0m
Weight 52g
Frequently Asked

What polarity is the connector?

The Mercury DC extension lead uses centre-positive polarity, which is standard for most consumer electronics and CCTV equipment. Always verify the polarity markings on your device and power supply before connecting to avoid damage.

Can this be used outdoors?

The cable jacket is rated for indoor use. If running outdoors or in damp environments, the cable should be protected inside weatherproof conduit or cable trunking to prevent moisture ingress at the barrel connectors.

Will this work with 12V LED strip lighting?

Yes, provided the LED strip and driver both use 2.1mm x 5.5mm barrel connectors and the combined current draw does not exceed 5A. Most single-colour LED strips under 3-4 metres at 12V will fall within this limit.

Does the cable cause voltage drop over 3 metres?

Voltage drop depends on current draw. At 2A and 12V the drop over 3m on 2.8mm cable is approximately 0.3V, which is acceptable for most applications. Higher currents approaching 5A will see greater drop and may affect device performance if the supply voltage is already marginal.

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

    The Mercury 3m DC extension lead uses a 2.1mm x 5.5mm barrel plug on one end and a matching socket on the other, extending the power reach between a DC supply and a device by three metres. The cable is rated for up to 30V and 5A, making it compatible with 12V and 24V DC systems commonly used in CCTV cameras, LED strip lighting, audio equipment and small electronics.

    Designed for installations where the power supply sits further from the device than the original cable allows, the extension adds reach without requiring a second transformer or re-routing existing infrastructure. Typical applications include CCTV cameras mounted several metres from the DVR, LED strips running along shelving or cabinetry where the driver is centrally located, and desk setups where a laptop or monitor power supply needs to sit further from the wall socket.

    The 2.8mm diameter cable is lighter and more flexible than thicker power cable, allowing it to be routed behind skirting boards, through cable conduit or along architrave without bulking. The black PVC jacket resists abrasion and UV exposure in indoor installations. The barrel connectors use a centre-positive configuration, which is standard for most DC-powered consumer electronics, but polarity should be checked before connecting to ensure compatibility.

    At 52g total weight the lead does not add significant load when cable-tied to existing runs or suspended on cable clips. The 3m length is a common extension increment that suits room-scale installations without introducing excessive cable slack or voltage drop over typical 12V loads under 3A.

    Specification
    Voltage Up to 30V
    Current Up to 5A
    Colour Black
    DC plug 2.1 x 5.5mm
    Cable : diameter 2.8mm
    Length 3.0m
    Weight 52g
    Frequently Asked

    What polarity is the connector?

    The Mercury DC extension lead uses centre-positive polarity, which is standard for most consumer electronics and CCTV equipment. Always verify the polarity markings on your device and power supply before connecting to avoid damage.

    Can this be used outdoors?

    The cable jacket is rated for indoor use. If running outdoors or in damp environments, the cable should be protected inside weatherproof conduit or cable trunking to prevent moisture ingress at the barrel connectors.

    Will this work with 12V LED strip lighting?

    Yes, provided the LED strip and driver both use 2.1mm x 5.5mm barrel connectors and the combined current draw does not exceed 5A. Most single-colour LED strips under 3-4 metres at 12V will fall within this limit.

    Does the cable cause voltage drop over 3 metres?

    Voltage drop depends on current draw. At 2A and 12V the drop over 3m on 2.8mm cable is approximately 0.3V, which is acceptable for most applications. Higher currents approaching 5A will see greater drop and may affect device performance if the supply voltage is already marginal.

    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.