Mersen 83120101 STPT12-12K150V-1PM Type 1+2 surge protection device with 12.5 kA lightning impulse current, 120 V nominal operating voltage, pluggable single-pole design and remote indication.
Original price was: £103.93.£76.81Current price is: £76.81.
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.
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.
| Voltage | 120 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT12 |
| Model | STPT12-12K150V-1PM |
| Part number | 83120101 |
| Product type | Type 1+2 Surge Protection Device |
| IEC classification | Class I+II |
| Lightning impulse current (Iimp 10/350 μs) | 12.5 kA |
| Maximum discharge current (Imax 8/20 μs) | 50 kA |
| Nominal discharge current (In 8/20 μs) | 20 kA |
| Nominal operating voltage (Un) | 120 V AC |
| Maximum continuous operating voltage (Uc) | 150 V AC |
| Number of poles | 1 |
| Mounting type | DIN rail |
| Protection rating | IP20 |
| Remote indication | Yes |
| Format | Pluggable |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It protects electrical installations against lightning currents and transient overvoltages at the main distribution board.
The 83120101 is a Type 1+2 (Class I+II) surge protection device designed for combined lightning and surge protection.
Yes. It includes remote indication to allow monitoring of the device status as well as visual end-of-life indication.
Yes. The pluggable design allows the protection module to be replaced quickly without removing the complete base.
It is typically installed on a DIN rail within the main electrical distribution board to provide the first level of surge protection.
Mersen Surge-Trap® surge protection devices are trusted worldwide to help protect electrical installations, industrial equipment and critical infrastructure from the damaging effects of lightning strikes and transient overvoltages.
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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...