Single Module Surge Protection Device WSPD140
The WSPD140 is a compact single-module Type 2 Surge Protection Device designed to safeguard domestic and commercial circuits against transient overvoltages caused by lightning strikes or switching events. It delivers reliable protection for sensitive electronics and meets the latest 18th Edition Amendment 2 requirements for surge compliance. Ideal for installs...
The WSPD140 is a compact single-module Type 2 Surge Protection Device designed to safeguard domestic and commercial circuits against transient overvoltages caused by lightning strikes or switching events. It delivers reliable protection for sensitive electronics and meets the latest 18th Edition Amendment 2 requirements for surge compliance.
Ideal for installs where board space is limited, this SPD fits directly onto DIN rail in standard consumer units or sub-boards. Suitable for both new installs and retrofit applications where compliance or upgrade is required.
- Single module SPD for space-saving installs
- Type 2 surge protection – 20kA/40kA rating
- Protects sensitive electronics from transients and spikes
- 18th Edition compliant – suitable for domestic and commercial use
- DIN rail mountable with standard 1P wiring
Check local requirements for SPD usage under BS7671. Often required on EV-ready boards, heat pump installs, or solar-connected systems.
Does this comply with 18th Edition Amendment 2?
Yes – this Type 2 SPD meets BS EN 61643 standards and satisfies the surge protection requirements set out in the 18th Edition, including Amendment 2.
Can this be used in consumer units for EV or heat pump installs?
Yes. Many EV and heat pump installs now require surge protection as standard. This compact SPD is ideal where space is tight.
What’s the difference between Type 1, 2, and 3 SPDs?
Type 1 SPDs protect against direct lightning strikes (main incomer boards), Type 2 covers general surges from indirect strikes or switching, and Type 3 is for specific equipment. This product is Type 2 – suitable for most domestic applications.
- Type: Type 2 SPD
- Poles: 1P (Single phase)
- Discharge Current (Imax): 40kA
- Nominal Discharge Current (In): 20kA
- Mounting: DIN rail (1 module)
- Dimensions: 80mm (W) x 90mm (H) x 65mm (D)
- Standards: BS EN 61643-11 / BS7671:2018+A2:2022
- Model: WSPD140
Always install surge protection devices in accordance with BS7671 guidelines and manufacturer instructions. This unit is designed for use on single-phase boards and should be connected as close as possible to the incoming supply to minimise cable length and maximise protection.
- Connect earth with shortest route to earth terminal bar
- Ensure correct orientation and terminal tightening
- Can be installed upstream of final circuits or distribution boards
- Install only by a qualified electrician
