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SP12-12K440V Mersen Type 1+2 1P 400V Replacement Cartridge
Mersen 83120004 SP12-12K440V Type 1+2 surge protection replacement cartridge with 12.5 kA impulse current rating, 20 kA nominal discharge current and 440 V maximum continuous operating voltage.
£54.08
Why Choose the Mersen 83120004 Surge-Trap Replacement Cartridge?
The Mersen 83120004, also known as SP12-12K440V, is a high-performance Type 1+2 surge protection replacement cartridge designed for use with Mersen Surge-Trap pluggable surge protection devices. It provides dependable protection against lightning currents and transient overvoltages in electrical distribution systems.
As part of the Mersen STP T12 12.5 Surge-Trap series, this replaceable cartridge is engineered for installations requiring coordinated surge protection at the incoming power supply. Its plug-in design allows quick replacement during maintenance, helping reduce downtime while maintaining reliable protection for connected equipment.
With a 12.5 kA impulse current rating, 20 kA nominal discharge current and 440 V maximum continuous operating voltage, the Mersen 83120004 is suitable for demanding industrial, commercial and power distribution applications where Type 1+2 surge protection is required.
Key Advantages
- Type 1+2 surge protection replacement cartridge for Mersen Surge-Trap systems.
- 12.5 kA impulse current rating for lightning current discharge capability.
- 440 V maximum continuous operating voltage for suitable electrical networks.
- 20 kA nominal discharge current for robust surge protection performance.
- Plug-in cartridge format supports fast and straightforward maintenance.
- Designed for use in incoming power supply panels and electrical distribution boards.
Key Features
- Mersen Surge-Trap STP T12 12.5 series.
- Type 1+2 / Class I+II surge protection.
- Replacement cartridge format.
- 1 pole configuration.
- 12.5 kA lightning impulse current rating.
- 20 kA nominal discharge current.
- 440 V maximum continuous operating voltage.
- Designed for DIN rail surge protection assemblies.
Reliable Surge Protection for Electrical Distribution Systems
Surge protection devices help protect electrical installations from transient overvoltages caused by lightning activity, switching operations and network disturbances. A Type 1+2 SPD is commonly used near the origin of an installation to discharge high-energy surge currents before they can damage sensitive downstream equipment.
The Mersen 83120004 replacement cartridge enables continued protection without replacing the complete surge protection assembly. This makes it a practical choice for maintenance teams, panel builders and electrical contractors responsible for keeping distribution systems protected and operational.
Typical Applications
- Incoming electrical distribution panels.
- Industrial power distribution systems.
- Commercial switchboards and control panels.
- Surge protection assemblies with external lightning protection systems.
- Building services and infrastructure installations.
- Maintenance replacement for compatible Mersen Surge-Trap devices.
Technical Specifications
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| Impulse Current Iimp (kA) | 12.5 kA | |
|---|---|---|
| Voltage | 440 V | |
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | Replacement cartridge | |
| SPD Type | Type 1+2 | |
| Nominal Discharge Current (In) | 20 kA | |
| Manufacturer | Mersen | |
| Series | Surge-Trap STP T12 12.5 | |
| Model | SP12-12K440V | |
| Manufacturer part number | 83120004 | |
| Product type | Surge protection replacement cartridge | |
| Surge protection type | Type 1+2 / Class I+II | |
| Number of poles | 1 pole | |
| Maximum continuous operating voltage | 440 V AC | |
| Nominal voltage | 400 V AC | |
| Impulse current | 12.5 kA | |
| Nominal discharge current | 20 kA | |
| Maximum discharge current | 50 kA | |
| Protection rating | IP20 | |
| Format | Plug-in replaceable cartridge |
Frequently Asked Questions
What is the Mersen 83120004 used for?
The Mersen 83120004 is a replacement cartridge for compatible Mersen Type 1+2 Surge-Trap surge protection devices used in electrical distribution systems.
What is the alternative product code for this item?
The alternative product code for Mersen 83120004 is SP12-12K440V.
What voltage is the Mersen 83120004 rated for?
This cartridge has a 440 V AC maximum continuous operating voltage and is commonly associated with 400 V electrical systems.
What surge protection type is this cartridge?
The Mersen 83120004 is a Type 1+2 / Class I+II surge protection replacement cartridge.
Where is this surge protection cartridge typically installed?
It is typically used in incoming power supply panels, distribution boards and surge protection assemblies where coordinated lightning and surge protection is required.
Trusted by Electrical Engineers Worldwide
Mersen Surge-Trap devices are widely used by panel builders, electrical contractors and maintenance engineers to protect power distribution systems from damaging transient overvoltages and lightning-related surge events.
