Mersen K1-2P320 Type 1+2 surge protection device with 320 V AC operating voltage, 12.5 kA lightning impulse current and pluggable DIN rail design for TNS electrical systems.
£178.42
The Mersen 44120212 K1-2P320 is a high-performance Type 1+2 Surge Protection Device (SPD) designed to protect low-voltage electrical installations from lightning strikes and transient overvoltages. Part of the proven Mersen Surge-Trap® K - K1 Series, this pluggable SPD provides dependable protection for industrial, commercial and infrastructure applications where reliable surge suppression is essential.
Designed for installation within the main distribution board, the K1-2P320 combines excellent surge handling capability with a compact DIN rail mounted design. Its pluggable construction allows rapid replacement during maintenance, helping minimise downtime while maintaining continuous protection for valuable electrical equipment.
With a 320 V AC maximum continuous operating voltage (Uc), 2+0 protection configuration and a 12.5 kA lightning impulse current (Iimp), the K1-2P320 is ideally suited to TNS electrical distribution systems operating at 277 V AC.
The Mersen K1-2P320 safely diverts high-energy surge currents away from connected electrical equipment before they can cause damage. This helps reduce downtime, improve installation reliability and extend the service life of motors, drives, switchgear and sensitive electronic devices.
Its high surge capacity, compact footprint and pluggable design make it suitable for demanding industrial environments, commercial facilities and infrastructure projects where dependable surge protection is required.
| Voltage | 277 V |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap® K - K1 Series |
| Model | K1-2P320 |
| Part Number | 44120212 |
| Product type | Type 1+2 Surge Protection Device (SPD) |
| IEC SPD Type | Class I+II |
| UL SPD Type | Type 1 Component Assembly |
| Maximum continuous operating voltage (Uc) | 320 V AC |
| Nominal operating voltage (Un) | 277 V AC |
| Lightning impulse current (Iimp) | 12.5 kA |
| Nominal discharge current (In) | 20 kA |
| Maximum discharge current (Imax) | 50 kA |
| Configuration | 2+0 |
| Network compatibility | TNS |
| Protection level (Up) | ≤1.5 kV |
| Mounting type | DIN rail |
| Format | Pluggable |
| Protection rating | IP20 |
| Dimensions (H × W × D) | Approx. 90 × 36 × 90 mm |
| Weight | Approx. 0.27 kg |
It protects low-voltage electrical installations from lightning strikes and transient overvoltages using Type 1+2 surge protection.
The K1-2P320 is designed for TNS electrical distribution systems operating at 277 V AC.
The device has a 320 V AC maximum continuous operating voltage (Uc).
The SPD provides a 12.5 kA lightning impulse current, 20 kA nominal discharge current and 50 kA maximum discharge current.
The K1-2P320 features a pluggable design for installation onto a standard DIN rail within an electrical distribution board.
Mersen Surge-Trap® K Series surge protection devices are trusted by electrical engineers and contractors worldwide to deliver dependable protection against lightning and transient overvoltages in commercial and industrial electrical systems.
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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...
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...