Mersen 83020003 SP2-40K320V Type 2 surge protection replacement cartridge with 40 kA maximum discharge current, 20 kA nominal discharge current and 320 V AC maximum continuous operating voltage for compatible Surge-Trap devices.
£32.00
The Mersen 83020003, also known as SP2-40K320V, is a reliable Type 2 surge protection replacement cartridge designed for compatible Mersen Surge-Trap pluggable surge protection devices. It helps protect electrical installations against transient overvoltages caused by switching operations, indirect lightning effects and power network disturbances.
As part of the Mersen Surge-Trap STP T2 40 series, this replacement cartridge is suitable for low-voltage distribution systems where coordinated surge protection is required. Its plug-in design allows fast replacement during maintenance, helping restore protection without replacing the complete surge protection assembly.
With a 40 kA maximum discharge current, 20 kA nominal discharge current and 320 V AC maximum continuous operating voltage, the Mersen 83020003 is a practical choice for Type 2 SPD applications on 277 V electrical systems.
Type 2 surge protection devices are commonly installed in distribution boards and sub-distribution panels to limit transient overvoltages before they reach connected electrical equipment. They are often used as the second stage of protection where Type 1 devices are installed upstream, or as the first stage in installations without direct lightning exposure.
The Mersen 83020003 replacement cartridge enables maintenance teams to restore surge protection quickly without replacing the complete SPD base. This makes it suitable for panel builders, electrical contractors and facilities engineers maintaining commercial and industrial electrical systems.
| Voltage | 320 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap STP T2 40 |
| Model | SP2-40K320V |
| Manufacturer part number | 83020003 |
| Product type | Surge protection replacement cartridge |
| SPD classification | Type 2 / Class II |
| Number of poles | 1 pole |
| Nominal voltage | 277 V AC |
| Maximum continuous operating voltage (Uc) | 320 V AC |
| Nominal discharge current (In) | 20 kA |
| Maximum discharge current (Imax) | 40 kA |
| Protection level | 1.5 kV |
| Protection rating | IP20 |
| Mounting | Pluggable replacement cartridge |
| Compatible installation | DIN rail SPD assembly |
The Mersen 83020003 is a Type 2 replacement cartridge for compatible Mersen Surge-Trap surge protection devices used in low-voltage electrical distribution systems.
The alternative product code for Mersen 83020003 is SP2-40K320V.
This replacement cartridge is designed for 277 V AC nominal systems and has a 320 V AC maximum continuous operating voltage.
The Mersen 83020003 is designed for Type 2 / Class II surge protection assemblies.
It is typically installed in compatible Mersen Surge-Trap pluggable SPD assemblies within distribution boards, switchboards and control panels.
Mersen Surge-Trap surge protection products are widely used by electrical engineers, panel builders and contractors to protect commercial and industrial electrical installations from damaging transient overvoltages.
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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...