Surge Protection Device (Surge Arrestor) WSPD240
£19.08
£22.00
The WSPD240 is a compact Type 2 Surge Protection Device (SPD) rated for 40kA discharge - designed to protect domestic and commercial installations from transient overvoltages caused by switching events or nearby lightning strikes. Fully compliant with BS7671 (18th Edition Amendment 2) and IEC 61643-11, it’s ideal for consumer units,...
The WSPD240 is a compact Type 2 Surge Protection Device (SPD) rated for 40kA discharge - designed to protect domestic and commercial installations from transient overvoltages caused by switching events or nearby lightning strikes.
Fully compliant with BS7671 (18th Edition Amendment 2) and IEC 61643-11, it’s ideal for consumer units, EV-ready boards, heat pump setups, and distribution circuits where surge protection is now mandatory.
- Type 2 SPD: Suitable for secondary protection against surges from indirect lightning or grid switching
- Discharge Capacity: 20kA nominal / 40kA max
- 2-Pole Design: 230V AC, TN-S and TT system compatible
- Visual Status: Green = Active, Red = Replace (mechanical indicator on each pole)
- DIN Rail Mounting: 2-module 35mm format for fast install
This unit is supplied standalone - for coordinated setups including terminals and cables, see our full range of surge protection boards and accessories.
Q: Does this meet 18th Edition surge protection rules?
A: Yes - this Type 2 SPD complies with BS7671 (18th Edition Amendment 2) and IEC 61643-11.
Q: What does the red/green indicator show?
A: Each pole has a visual window. Green means the device is active; red means it should be replaced.
Q: Can I use this in an EV board or heat pump setup?
A: Absolutely - it’s ideal for residential and light commercial installs, including EV-ready and renewable boards.
Q: Does this unit include cables or accessories?
A: No - this is the SPD unit only. For full kits, check our Surge Protection Boards and coordinated accessories.
- Type: Type 2 SPD (Surge Protection Device)
- Discharge Current: 20kA nominal / 40kA max
- Poles: 2P (double pole)
- Voltage Rating: 230V AC
- Earthing System: TT and TN-S compatible
- Mounting: 35mm DIN rail
- Status Indicator: Mechanical red/green per pole
- Standards: BS7671, IEC 61643-11
This SPD is supplied as a standalone unit without cables or busbars. It should be installed by a qualified electrician as part of a compliant surge protection setup.
- Mount close to the main incomer or distribution board
- Use short, direct earth leads to minimise let-through voltage
- Coordinate with upstream or downstream SPDs if present
