Why Choose the Mersen 83120106 Surge Protection Device?
The Mersen 83120106 STPT12-12K440V-1P is a compact and reliable Type 1+2 surge protection device (SPD) designed to protect low-voltage electrical installations against lightning currents and transient overvoltages. Part of the Mersen Surge-Trap® Pluggable STPT12 Series, it is suitable for use as the first level of protection in main distribution boards and incoming power supply panels.
This surge protection device combines lightning current discharge capability with effective transient voltage protection in a slim, single-pole pluggable format. Its replaceable cartridge design supports fast maintenance, while visual status indication helps identify when the module requires replacement.
With a 12.5 kA lightning impulse current (10/350 μs), 440 V maximum continuous operating voltage (Uc) and 400 V nominal operating voltage (Un), the 83120106 provides dependable L-N protection for industrial, commercial and infrastructure electrical installations.
Key Advantages
- Type 1+2 surge protection device for lightning current and transient overvoltage protection.
- 12.5 kA Iimp (10/350 μs) lightning impulse current rating.
- 50 kA maximum discharge current (8/20 μs).
- 400 V nominal operating voltage for low-voltage AC systems.
- Compact 1-pole pluggable design for DIN rail installation.
- Suitable as the first level of protection in main distribution boards.
Key Features
- Mersen Surge-Trap® STPT12 Series.
- Catalogue number: 83120106.
- Model: STPT12-12K440V-1P.
- IEC Type 1+2 / Class I+II surge protection.
- 400 V AC nominal operating voltage (Un).
- 440 V AC maximum continuous operating voltage (Uc).
- 1-pole, 1-module pluggable format.
- Visual end-of-life indication.
- DIN rail mounting.
- Designed for L-N protection in low-voltage systems.
Reliable Protection Against Transient Overvoltages
Surge protection devices help protect electrical equipment from damaging voltage spikes caused by lightning activity, switching operations and network disturbances. Installing a Type 1+2 SPD at the incoming supply point helps reduce the risk of equipment failure, downtime and disruption to critical electrical systems.
The Mersen STPT12 Series is engineered for low-voltage distribution applications where dependable surge protection and simple maintenance are required. The pluggable cartridge format allows the protection module to be replaced quickly without rewiring the complete base.
Typical Applications
- Main electrical distribution boards.
- Incoming power supply panels.
- Industrial automation systems.
- Commercial building installations.
- Control panels and machinery supplies.
- Infrastructure and critical power systems.
