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SPD Surge Protection Devices

Showing 101–120 of 128 results

Surge Devices Pluggable Data Signal Line 48V SPD for 4/20mA Signals

Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: SP48
£58.50

Surge Devices Co-Axial BNC CCTV Arrester

Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: D-24/BNC
£58.50

Surge Devices Type 3 3kA/5kA 1A Cat 6 Power Over Ethernet SPD

Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: SY4-POE
£84.50

Surge Devices BS POE 7.5V Power Over Ethernet SPD

Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: 630043
£78.00

Surge Devices Single Telephone Surge Arrester for Installation Into Krone LSA Disconnection Strips

Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: DP1LSA180
£14.30

Surge Devices 10 Pair Telephone Surge Arrester for Installation Into Krone LSA Disconnection Strips

Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: DP10LSA180
£123.50

Surge Devices Earth Bar for DP1LSA180

Available to Order
Estimated Lead Time:
Usually 3 - 4 Working Days
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SKU: TELCO/EB
£8.45

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 | SP12S-3PN/50kA | Type 1+2 Surge Protection Device | 50kA

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: SP12S-3PN/50kA
£210.51

Niglon SP23S-1PN 40kA Type 2 Surge Protection Device

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: SP23S-1PN
£41.91

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 SP23S-3PN/C40KA 40kA Type 2 Surge Protection Device

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: SP23S-3PN/C40KA
£79.78

Niglon SAE2M-23-215 Type 2 (or 3) Surge Protection Device

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: SAE2M-23-215
£40.43

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

Available to Order
Estimated Lead Time:
Usually 2 - 3 Working Days
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SKU: SAE6M-23-415
£102.66

Switchtec | DDC50S-21Y-1200 | Citel | 50kA 1200V DC Type 2 Surge Protection Device For Energy Storage & EV Charging

Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
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SKU: DDC50S-21Y-1200
£127.04

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

Timeguard | TX3913 | Type 2 SPD for TX Consumer Units

Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
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SKU: TX3913
£20.16

Surge Protection Devices | SPD4 | Type 2 & 3 Surge Protection Device | DIN Rail Mount with LED Indicator

Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
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SKU: SPD4
£164.50

FuseBox | SPDKITT2TPNE | Enclosed Type 2 Three Phase SPD Kit | 32A TP MCB

Available to Order
Estimated Lead Time:
Usually 1 - 3 Working Days
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SKU: SPDKITT2TPNE
£79.95

Showing 101–120 of 128 results

Surge Protective Devices for Electrical Installations

A surge protective device limits transient overvoltages and diverts surge current away from connected equipment. SPDs are used as part of a coordinated electrical protection strategy and may be required depending on the installation type, risk assessment and applicable BS 7671 requirements.

Type 1, Type 2 and Combined Type 1+2 SPDs

Type 1 SPDs are designed for locations where partial lightning current may need to be discharged, typically at the origin of installations where this level of protection is required. Type 2 SPDs are widely used to protect against switching surges and transient overvoltages associated with indirect lightning effects. Combined Type 1+2 devices provide both functions in one unit where appropriate.

Single-Phase, Three-Phase and Solar PV Surge Protection

The range includes surge protection for single-phase and three-phase AC installations, together with dedicated DC SPDs for solar PV systems. Choose a device that matches the system voltage, number of poles, earthing arrangement and application. Dedicated category ranges make it easier to compare suitable options for consumer units, distribution boards and PV installations.

Choosing the Correct Surge Protective Device

  • Check whether Type 1, Type 2 or combined Type 1+2 protection is required.
  • Match the SPD to the supply voltage, AC or DC system and number of poles.
  • Confirm compatibility with the installation’s earthing arrangement.
  • Check discharge ratings, backup protection and coordination requirements.
  • Follow the manufacturer’s installation instructions and applicable BS 7671 requirements.

SPD Kits and Trusted Electrical Brands

Alongside stand-alone SPDs, we stock consumer unit SPD kits, enclosure solutions and surge protection combinations from brands including FuseBox, Hager, Live Electrical, Niglon, WCED Whitecliffe and Citel. Use the product filters and subcategory links above to narrow the range quickly.

For trade and professional installations, our Surge Protective Devices range gives you practical options across domestic, commercial and solar PV applications, with fast UK delivery available on eligible in-stock orders.