Mersen 44020208 K2-2PG320 Type 2 surge protection device with 1+1 configuration, 320 V AC maximum continuous operating voltage, 20 kA nominal discharge current and 50 kA maximum discharge current.
£81.59
The Mersen 44020208, also identified as the K2-2PG320, is a dependable Type 2 surge protection device (SPD) engineered to protect single-phase low-voltage electrical installations against transient overvoltages. As part of the trusted Mersen Surge-Trap K2 series, it provides combined line-to-neutral and neutral-to-earth protection for commercial, industrial and infrastructure applications.
Designed with a compact pluggable construction, the K2-2PG320 enables quick inspection and replacement of protection cartridges without removing the complete DIN-rail base. A built-in visual status indicator allows maintenance personnel to verify the operating condition quickly, helping minimise downtime while maintaining continuous protection.
With a 277 V AC nominal operating voltage, a 320 V AC maximum continuous operating voltage between line and neutral, a 20 kA nominal discharge current and a 50 kA maximum discharge current, the Mersen 44020208 provides reliable protection against switching transients and lightning-induced surges. Its compact two-module DIN-rail design makes it ideal for modern distribution boards, electrical switchgear and industrial control panels.
Transient overvoltages caused by indirect lightning strikes, switching operations and inductive loads can damage sensitive equipment such as PLCs, drives, power supplies and communication devices. Installing a quality surge protection device helps reduce equipment failures, minimise downtime and improve electrical system reliability.
The Mersen Surge-Trap K2 range combines high discharge capability with advanced thermal disconnection technology and replaceable protection cartridges. This allows maintenance to be completed quickly while ensuring continuous protection for critical electrical infrastructure.
| Voltage | 277 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap K2 |
| Model | K2-2PG320 |
| SKU / Part number | 44020208 |
| Product type | Surge protection device |
| SPD classification | Type 2 / Class II |
| UL classification | Type 1 Component Assembly |
| Internal configuration | 1+1 |
| Number of poles | 2 |
| Network compatibility | TT and TN-S |
| Protection modes | L-N / N-PE |
| Nominal operating voltage | 277 V AC |
| Maximum continuous operating voltage (L-N) | 320 V AC |
| Maximum continuous operating voltage (N-PE) | 255 V AC |
| Nominal discharge current | 20 kA |
| Maximum discharge current | 50 kA |
| Voltage protection level (L-N) | ≤1.5 kV |
| Voltage protection level (L-PE) | ≤1.8 kV |
| Voltage protection level (N-PE) | ≤1.5 kV |
| Maximum back-up fuse | 315 A gG |
| Short-circuit withstand | 25 kA |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| DIN rail modules | 2 |
| Weight | approx. 0.23 kg |
| EAN | 8435297889793 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 44020208 protects single-phase low-voltage electrical installations against transient overvoltages caused by lightning activity and electrical switching events.
It is a Type 2 / Class II surge protection device designed for TT and TN-S electrical systems.
The device provides combined line-to-neutral (L-N) and neutral-to-earth (N-PE) surge protection within a compact two-pole unit.
The K2-2PG320 is rated for a 20 kA nominal discharge current and a 50 kA maximum discharge current.
Yes. The pluggable construction allows the protection cartridges to be replaced without removing the complete DIN-rail base.
Mersen Surge-Trap K2 surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals worldwide to protect valuable electrical installations against damaging 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...