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Single Phase SPDs

Single Phase SPD devices help protect electrical installations and connected equipment against transient overvoltages caused by switching events and lightning activity. Designed for single-phase systems, they are commonly installed within consumer units and distribution boards.

Choose from surge protective devices for domestic and light commercial applications, including Type 2 and other suitable SPD configurations from trusted circuit protection manufacturers.

Showing 1–20 of 44 results

WCED WEC440SPT12 WCED Stand Alone Type 1 & 2 SPD with Main Switch 1WCED WEC440SPT12 WCED Stand Alone Type 1 & 2 SPD with Main Switch 2

WCED Whitecliffe WEC440SPT12 Stand Alone Type 1 & 2 SPD with Main Switch
3 In Stock
More available within:
Usually 1 - 2 Working Days
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SKU: WEC440SPT12
Quantity Discount
Quantity Price
1 £65.94
2+ £62.64
3+ £60.99
5+ £59.35
£65.94
WCED WSPDT2-CB 1 Module 20kA/40kA 2 Pole SPD Kit for Consumer Units

WCED WSPDT2-CB 1 Module 20kA/40kA 2 Pole SPD Kit for Consumer Units
1 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: WSPDT2-CB
£15.24
SPD1MT2 Single Module T2 SPDClose-up of FuseBox SPD1MT2 surge protection device – compact Type 2 SPD for direct mounting in residential or commercial distribution boards.

Fusebox SPD1MT2 Single Module Type 2 SPD Surge Protection Device
19 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: SPD1MT2
£23.51
Garo Meter Supply Isolator with Surge ProtectionGaro GSP2100M Meter Supply Isolator with Surge Protection

Garo GSP2100M Meter Supply Isolator with Surge Protection
20 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: GPS2100M
£19.16
FuseBox E2PMST2 100A Meter Isolator Switch with SPD

FuseBox | E2PMST2 | DP 100A | Electricity Meter Isolator Switch with Type 2 SPD
3 In Stock
More available within:
Usually 2 - 4 Working Days
Read More
SKU: E2PMST2
Quantity Discount
Quantity Price
1 £27.99
2+ £27.71
4+ £27.43
£27.99
FuseBox SF0100T2 100A Fused Switch with T2 SPD

FuseBox SF0100T2 100A Fused Switch with T2 SPD
4 In Stock
More available within:
Usually 2 - 4 Working Days
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SKU: SF0100T2
£104.40
Live Electrical SA240CABLE Live Electrical 6mm2 Cable Kit for SPD

Live Electrical 6mm2 Cable Kit for SPD
18 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: SA240CABLE
£3.58
Niglon NSA2-240 Type 2 Surge Protection Kit with Cables

Niglon NSA2-240 Type 2 Surge Protection Kit with Cables
6 In Stock
More available within:
Usually 2 - 3 Working Days
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SKU: NSA2-240
£24.04
WCED Cable Pack Kit - Standard Live

WCED Cable Pack Kit – Standard Live, Neutral & Earth Cable
6 In Stock
This item cannot be back-ordered
SKU: Cable Kit1
£2.00
WCED Cable Pack Kit - Forked Terminal Live

WCED Cable Pack Kit – Forked Terminal Live, Neutral & Earth Cable
4 In Stock
More available within:
Usually 1 - 2 Working Days
Read More
SKU: Kit1-CP
£2.00
Garo DST2-275-2 2 Pole 1 Module Class 11 Type 2 SPD 275V 20KA

Garo DST2-275-2 2 Pole 1 Module Class 11 Type 2 SPD 275V 20KA
4 In Stock
More available within:
Usually 2 - 3 Working Days
Read More
SKU: DST2-275-2
£14.77
Live Electrical SP1401P+N/1 Type 2 SPD Surge Protection Device

Live Electrical SP1401P+N/1 Type 2 SPD Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
Read More
SKU: SP1401P+N/1
£13.67
WCED WSPDTE-2 2 Pole 2 Module Type 1 SPD Surge Protection Device

WCED WSPDTE-2 2 Pole 2 Module Type 1 SPD Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 1 - 2 Working Days
Read More
SKU: WSPDTE-2
£53.27
Live Electrical SP1401P+N/2 Type 2 SPD Surge Protection Device

Live Electrical SP1401P+N/2 Type 2 SPD Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
Read More
SKU: SP1401P+N/2
£12.03
Live Electrical SA140/1P+N 2 Pole Type 2 SPD Surge Protection Device

Live Electrical SA140/1P+N 2 Pole Type 2 SPD Surge Protection Device
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
Read More
SKU: SA140/1P+N
£14.94
Garo DST2-275-2KIT 2 Pole 1 Module Class 11 Type 2 SPD 275V 20KA With a Cable Kit

Garo DST2-275-2KIT 2 Pole 1 Module Class 11 Type 2 SPD 275V 20KA With a Cable Kit
Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
Read More
SKU: DST2-275-2KIT
£17.89
Surge Devices SY2-D Surge Devices Type 2+3 Single Module 2P SPD with Replaceable Modules and Window Indication

Surge Devices SY2-D Single Phase Type 2/3 SPD
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
Read More
SKU: SY2-D
£39.00
Fusebox F3M2SPDZ FuseBox 100A Main Switch/MCB + SPD T2 Retrofit Kit

Fusebox F3M2SPDZ 100A Main Switch + Type 2 SPD Kit
Available to Order
Estimated Lead Time:
Usually 2 - 4 Working Days
Read More
SKU: F3M2SPDZ
£61.14
Surge Devices SY12325KA2P/ENCM Surge Devices Type 1+2+3 25kA Single Phase Lightning and Surge Arrester

Surge Devices SY12325KA2P/ENCM Type 1+2+3 SPD – 25kA Single Phase Lightning Arrester with MCB in IP65 Enclosure
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
Read More
SKU: SY12325KA2P/ENCM
£180.00
Surge Devices 10812/LED 50kA Type 1+2+3 Single Phase SPD with LED Indication

Surge Devices 10812/LED 50kA Type 1+2+3 Single Phase SPD with LED Indication
Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
Read More
SKU: 10812/LED
£243.00

Showing 1–20 of 44 results

Single Phase SPD Surge Protection Devices

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

They can help reduce the risk of damage to equipment such as 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.
  • Number of poles – check the required protective arrangement for line and neutral conductors.
  • Earthing system – confirm compatibility with the installation’s 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 effectiveness 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 SPD devices for consumer units and distribution boards from established electrical manufacturers. Use the product specifications and filters to compare SPD type, poles, 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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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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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.
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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

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

GARO items that are not available from our shelf stock will usually be ordered directly from GARO and dispatched as soon as they arrive with us. Delivery is generally completed within 2–3 working days, although stock availability, order cut-off times and courier schedules may affect the timing.

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

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

Orders containing only Live Electrical products that are not available from our shelf stock will usually be dispatched directly from Live Electrical. Delivery is generally completed within 2–3 working days, although stock availability, order cut-off times and courier schedules may affect the timing.

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

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 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.

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