Why Choose the Mersen 83120101 Surge Protection Device?
The Mersen 83120101 STPT12-12K150V-1PM is a high-performance Type 1+2 surge protection device (SPD) designed to protect low-voltage electrical installations against lightning currents and transient overvoltages. Part of the trusted Mersen Surge-Trap® Pluggable STPT12 Series, this device provides reliable protection for industrial, commercial and infrastructure applications where electrical continuity is essential.
Designed for installation at the main distribution board, the 83120101 combines lightning current discharge capability with surge protection in a compact, pluggable module. Its remote indication contact and replaceable cartridge simplify maintenance while reducing system downtime.
With a 12.5 kA lightning impulse current (10/350 μs), 150 V maximum continuous operating voltage (Uc) and 120 V nominal operating voltage (Un), this single-pole SPD provides dependable protection for sensitive electrical equipment connected to single-phase AC systems.
Key Advantages
- Type 1+2 surge protection device for lightning and transient overvoltage protection.
- 12.5 kA Iimp (10/350 μs) lightning impulse current rating.
- 50 kA maximum discharge current (8/20 μs).
- Compact pluggable single-pole design for easy replacement.
- Integrated remote status indication for monitoring.
- Suitable as the first level of protection in main distribution boards.
Key Features
- Mersen Surge-Trap® STPT12 Series.
- Catalogue number: 83120101.
- Model: STPT12-12K150V-1PM.
- IEC Type 1+2 / Class I+II surge protection.
- 120 V AC nominal operating voltage (Un).
- 150 V AC maximum continuous operating voltage (Uc).
- 1-pole pluggable module.
- Visual and remote end-of-life indication.
- DIN rail mounting.
- Suitable for TNS, TNC and TT earthing systems.
Reliable Protection Against Transient Overvoltages
Surge protection devices safeguard electrical systems from damage caused by lightning strikes and switching transients. Installing a Type 1+2 SPD at the main distribution board helps prevent costly equipment failures, minimises downtime and improves the long-term reliability of industrial electrical installations.
The Mersen STPT12 Series has been developed for demanding applications where dependable surge protection and straightforward maintenance are required. The pluggable cartridge design enables rapid replacement without rewiring the installation.
Typical Applications
- Main electrical distribution boards.
- Industrial automation systems.
- Commercial buildings.
- Control panels.
- Infrastructure installations.
- Critical power distribution systems.
