Why Choose the Mersen 83120107 Surge Protection Device?
The Mersen 83120107 STPT12-12K440V-1PM is a compact and dependable 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 incoming supply panels, main distribution boards and installations requiring a first level of surge protection.
This surge protection device combines high lightning current discharge capability with effective transient voltage suppression in a slim, single-pole pluggable format. Its replaceable cartridge design supports fast maintenance, while integrated visual and remote indication allows convenient monitoring of device status.
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 83120107 provides reliable L-N protection for industrial, commercial and infrastructure electrical systems.
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.
- Integrated remote indication for device status monitoring.
Key Features
- Mersen Surge-Trap® STPT12 Series.
- Catalogue number: 83120107.
- Model: STPT12-12K440V-1PM.
- 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 and remote 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 voltage spikes caused by lightning activity, switching operations and disturbances on the power network. Installing a Type 1+2 SPD at the incoming supply point helps reduce the risk of damage, downtime and disruption to critical electrical systems.
The Mersen STPT12 Series is engineered for low-voltage distribution applications where reliable protection and straightforward 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.
