Mersen SP12-50K-N Type 1+2 1 pole neutral replacement cartridge with 25 kA lightning impulse current, 100 kA maximum discharge current and 255 V AC maximum continuous operating voltage.
£110.75
The Mersen 83120006, also known as SP12-50K-N, is a high-performance Type 1+2 surge protection replacement cartridge designed for compatible Mersen Surge-Trap surge protection devices. It provides dependable protection against lightning currents and transient overvoltages, helping safeguard electrical installations and sensitive equipment in industrial and commercial environments.
As part of the Mersen Surge-Trap STPT12 25 kA series, this pluggable neutral replacement cartridge enables quick maintenance without replacing the complete surge protection device. Its mechanically coded design helps prevent incorrect cartridge installation while reducing downtime during servicing.
Featuring a 25 kA lightning impulse current rating, 100 kA maximum discharge current and a 255 V AC maximum continuous operating voltage, the SP12-50K-N is suitable for incoming power distribution panels and installations requiring coordinated Type 1+2 surge protection.
Type 1+2 surge protection devices are installed at the origin of electrical installations to safely discharge lightning currents while limiting transient overvoltages that could damage downstream equipment. They are commonly specified for facilities with external lightning protection systems or increased exposure to surge events.
The Mersen 83120006 replacement cartridge restores full protection without replacing the complete SPD assembly, making routine maintenance faster and more economical for electrical contractors, panel builders and maintenance engineers.
| Phase | Single Phase |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap STPT12 25 |
| Model | SP12-50K-N |
| Manufacturer part number | 83120006 |
| Product type | Surge protection replacement cartridge |
| SPD classification | Type 1+2 / Class I+II |
| Configuration | Neutral cartridge |
| Number of poles | 1 pole |
| Maximum continuous operating voltage (Uc) | 255 V AC |
| Lightning impulse current (Iimp) | 25 kA |
| Nominal discharge current (In) | 25 kA |
| Maximum discharge current (Imax) | 100 kA |
| Protection rating | IP20 |
| Mounting | Pluggable replacement cartridge |
The Mersen 83120006 is a neutral replacement cartridge for compatible Mersen Type 1+2 Surge-Trap surge protection devices installed in electrical distribution systems.
The alternative product code is SP12-50K-N.
It provides Type 1+2 / Class I+II protection with a 25 kA lightning impulse current and a 100 kA maximum discharge current.
The cartridge has a 255 V AC maximum continuous operating voltage (Uc).
It is installed in compatible Mersen Surge-Trap pluggable surge protection devices located in incoming power distribution panels and switchboards.
Mersen Surge-Trap surge protection products are widely specified by electrical engineers, panel builders and contractors for reliable protection of industrial and commercial electrical installations against lightning and transient overvoltages.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...