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K2-2PG320 Mersen Surge Protector Type 2 SPD 2 Pole 277 Volt 20KA TT
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.
£61.19
Why Choose the Mersen 44020208 K2-2PG320 Surge Protection Device?
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.
Key Advantages
- Reliable Type 2 surge protection for single-phase electrical installations.
- Combined L-N and N-PE protection in one compact device.
- 50 kA maximum discharge current for effective transient overvoltage protection.
- Pluggable cartridge design simplifies maintenance and replacement.
- Visual operating status indicator for quick inspection.
- Suitable for TT and TN-S low-voltage electrical systems.
Key Features
- Mersen Surge-Trap K2 series.
- Type 2 / Class II surge protection device.
- 1+1 internal configuration.
- Two-pole design.
- 277 V AC nominal operating voltage.
- 320 V AC maximum continuous operating voltage (L-N).
- 255 V AC maximum continuous operating voltage (N-PE).
- 20 kA nominal discharge current.
- 50 kA maximum discharge current.
- Dynamic thermal disconnection technology.
- Visual operating status indicator.
- Compact pluggable DIN-rail construction.
Reliable Surge Protection for Single-Phase Installations
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.
Typical Applications
- Single-phase distribution boards.
- Commercial electrical installations.
- Industrial switchgear and control panels.
- Building management systems.
- Automation and PLC control cabinets.
- Protection of sensitive electronic equipment.
Technical Specifications
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| Voltage | 277 V | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 2-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Earthing System | TN-S, TT | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | No | |
| 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 |
Frequently Asked Questions
What is the Mersen 44020208 used for?
The Mersen 44020208 protects single-phase low-voltage electrical installations against transient overvoltages caused by lightning activity and electrical switching events.
What type of surge protection device is the K2-2PG320?
It is a Type 2 / Class II surge protection device designed for TT and TN-S electrical systems.
What protection modes are provided?
The device provides combined line-to-neutral (L-N) and neutral-to-earth (N-PE) surge protection within a compact two-pole unit.
What discharge current can the device handle?
The K2-2PG320 is rated for a 20 kA nominal discharge current and a 50 kA maximum discharge current.
Can the protection cartridges be replaced?
Yes. The pluggable construction allows the protection cartridges to be replaced without removing the complete DIN-rail base.
Trusted Surge Protection from Mersen
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.
