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Single Phase SPDs

Showing 21–32 of 32 results

Niglon SP12S-1PN 50kA Type 1+2 Surge Protection Device

Niglon SP12S-1PN 50kA Type 1+2 Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: SP12S-1PN
£139.26
Niglon SP23S-1PN 40kA Type 2 Surge Protection Device

Niglon SP23S-1PN 40kA Type 2 Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
Read More
SKU: SP23S-1PN
£41.91
Niglon SP23S-1PN 40kA Type 2 Surge Protection Device

Niglon SP23S-1PN/C40KA 40kA Type 2 Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: SP23S-1PN/C40KA
£31.10
Niglon SAE2M-23-215 Type 2 (or 3) Surge Protection Device

Niglon SAE2M-23-215 Type 2 (or 3) Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
Read More
SKU: SAE2M-23-215
£40.43
Niglon SAE5-23-415 Type 2 Surge Protection Device

Niglon SAE5-23-415 Type 2 Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: SAE5-23-415
£97.93
Niglon SAE6M-23-415 Type 2 (or 3) Surge Protection Device

Niglon SAE6M-23-415 Type 2 (or 3) Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: SAE6M-23-415
£102.66
FuseBox SPDCUKITTPNT1 Type 1 SPD TPN Kit

FuseBox | SPDCUKITTPNT1 | Type 1 SPD TPN Kit
Available to Order
Estimated Lead Time:
Usually 2 - 4 Working Days
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SKU: SPDCUKITTPNT1
£170.05
SPD1 Type 2 & 3 Single Phase SPD

Surge Protection Devices | SPD1 | Type 2 & 3 Single Phase SPD | 40kA
Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
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£31.95
Choose options
This product has multiple variants. The options may be chosen on the product page
SPD2 Type 2 & 3 Single Phase SPD

Surge Protection Devices | SPD2 | Type 2 & 3 Single Phase SPD | 40kA
Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
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£74.95
Choose options
This product has multiple variants. The options may be chosen on the product page
LSPD22 Type 1 2 3 Single Phase SPD

Surge Protection Devices | LSPD22 | Type 1, 2 & 3 Single Phase SPD | 12.5kA Per Pole
Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
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£150.95
Choose options
This product has multiple variants. The options may be chosen on the product page
LSPD12 Type 1 2 3 Single Phase SPD

Surge Protection Devices | LSPD12 | Type 1, 2 & 3 Single Phase SPD | 25kA Per Pole
Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
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£232.95
Choose options
This product has multiple variants. The options may be chosen on the product page
WCED WFMS100/3FSP WCED Metal Fused Main Switch with 3 Fuses & SPD 1WCED WFMS100/3FSP WCED Metal Fused Main Switch with 3 Fuses & SPD 2

WCED Metal Fused Main Switch with 3 Fuses & SPD
Out of Stock
Expected back in stock mid-June
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SKU: WFMS100/3FSP
£61.96
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Showing 21–32 of 32 results

Single Phase SPD Surge Protection Devices

A Single Phase SPD is designed to limit transient overvoltages and divert surge current away from connected electrical and electronic equipment. Surge protective devices are commonly installed at consumer units and distribution boards as part of the overall protection strategy for single-phase electrical installations.

They can help reduce the risk of damage to appliances, lighting controls, heating systems, electronic devices and other equipment vulnerable to short-duration voltage surges.

Type 2 SPDs for Single Phase Installations

Type 2 SPDs are widely used in domestic and commercial single-phase installations to provide protection against switching surges and transient overvoltages associated with indirect lightning effects.

Depending on the installation and supply arrangement, Type 1 or combined Type 1+2 surge protection may be required instead. The correct SPD type should therefore be determined as part of the electrical design.

Choosing a Single Phase Surge Protective Device

  • SPD type – confirm whether Type 1, Type 2 or combined Type 1+2 protection is required.
  • System voltage – select a device suitable for the single-phase supply and installation.
  • Poles and configuration – check the required protection arrangement for the installation.
  • Earthing system – confirm compatibility with the relevant TN-S, TN-C-S, TT or other supply arrangement.
  • Discharge ratings – check the manufacturer’s stated surge current and voltage protection characteristics.
  • Compatibility – ensure the SPD, backup protection and associated accessories are suitable for the distribution equipment being used.

Single Phase SPD Installation

SPD performance depends on correct device selection, conductor routing, connection length and coordination with the rest of the electrical installation. Surge protective devices should be installed in accordance with the manufacturer’s instructions and the applicable requirements of BS 7671.

Single Phase Surge Protection from Trusted Brands

Browse our range of Single Phase SPDs for consumer units and distribution boards from established electrical manufacturers. Use the product specifications and filters to compare SPD type, configuration, discharge capacity and other installation requirements.

Electrical4Less supplies single-phase surge protection for domestic and commercial installations, with UK delivery and collection from our Fulham trade counter available.






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Next Day Delivery

Cut-Off Time and Order Information
To ensure your order qualifies for next day delivery, please place your order by 3:00 PM. This is subject to all items being available on the shelf at the time of your order. For orders where the total value exceeds £200 + VAT (double our standard carriage-paid order value of £100 + VAT), we are happy to split the delivery into two shipments if some items are needed urgently and others are not immediately available. If you have any questions or need further assistance, feel free to reach out to us via WhatsApp for live support. We’re here to help!

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Supplier Lead Time & Availability

This item may be sourced from our supplier before dispatch.
The lead time shown is an estimate only and is based on the usual supplier timeframe. It is subject to supplier availability and is not a guaranteed delivery date.
We do not have a live supplier stock feed, so supplier stock can change without notice.
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Delivery info

If this item is not currently available from our shelf stock, we will order it directly from Niglon and dispatch it as soon as it arrives with us. Delivery is usually completed within 2–3 working days.

Please note that if your order includes other products with a longer lead time, the complete order may be dispatched once all items are available.

In the unlikely event that an item becomes unavailable, we will contact you with the available options, which may include waiting for stock, choosing an alternative product or cancelling the unavailable item for a refund.

Delivery info

If this item is not currently on our shelves, we will order it from FuseBox for delivery to our warehouse. FuseBox does not dispatch directly to our customers, so once the item arrives with us, we will send it on to you as quickly as possible. Many items reach us the next working day, while some may take a little longer. Delivery to you is usually completed within 2–4 working days.

Please note that if your order includes other products with a longer lead time, the complete order may be dispatched once all items are available.

In the unlikely event that an item becomes unavailable, we will contact you with the available options, which may include waiting for stock, choosing an alternative product or cancelling the unavailable item for a refund.

Delivery info

Where an order contains only WCED products that are not available from our shelf stock, it will usually be dispatched directly from WCED. Delivery often takes 1–2 working days, although stock availability, order cut-off times and courier schedules may affect the timing.

For mixed orders containing products from other suppliers, the dispatch arrangement and delivery time may vary, and the order may follow the longest lead time shown.

Delivery info

This product is currently out of stock. According to our supplier (WCED), new stock is expected mid-June. As soon as it arrives, it will be available to order directly through our website.

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