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K2-2P320 Mersen Surge Protector Type 2 SPD 2 Pole 277 Volt 20KA TNS
Mersen 44020210 K2-2P320 Type 2 surge protection device with 2+0 configuration, 320 V AC maximum continuous operating voltage, 20 kA nominal discharge current and 50 kA maximum discharge current.
£56.09
Why Choose the Mersen 44020210 K2-2P320 Surge Protection Device?
The Mersen 44020210, also identified as the K2-2P320, is a robust Type 2 surge protection device (SPD) designed to safeguard single-phase low-voltage electrical installations from transient overvoltages. As part of the trusted Mersen Surge-Trap K2 series, it provides reliable surge protection for 277 V TN-S systems, helping protect sensitive electrical equipment against lightning-induced surges and switching transients.
Its compact pluggable design enables rapid inspection and replacement of the protection module without removing the DIN-rail base. An integrated visual status indicator allows maintenance personnel to confirm the operating condition quickly, reducing downtime while maintaining continuous protection.
With a 277 V AC nominal operating voltage, 320 V AC maximum continuous operating voltage, a 20 kA nominal discharge current and a 50 kA maximum discharge current, the Mersen 44020210 delivers dependable protection for commercial buildings, industrial facilities and infrastructure installations requiring high-performance surge suppression.
Key Advantages
- Reliable Type 2 surge protection for single-phase TN-S electrical systems.
- 2+0 protection configuration for effective line protection.
- 50 kA maximum discharge current for excellent transient protection.
- Pluggable cartridge simplifies maintenance and replacement.
- Compact DIN-rail design saves valuable panel space.
- Visual status indication enables quick routine inspection.
Key Features
- Mersen Surge-Trap K2 series.
- Type 2 / Class II surge protection device.
- 2+0 internal configuration.
- Two-pole design.
- 277 V AC nominal operating voltage.
- 320 V AC maximum continuous operating voltage (Uc).
- 20 kA nominal discharge current (In).
- 50 kA maximum discharge current (Imax).
- Protection modes: L-PE / N-PE.
- Dynamic thermal disconnection technology.
- Visual operating status indicator.
- Pluggable DIN-rail construction.
Reliable Protection for 277 V TN-S Electrical Systems
Electrical transients caused by indirect lightning strikes, switching operations and inductive loads can damage PLCs, drives, power supplies and other critical equipment. Installing a dedicated Type 2 surge protection device significantly reduces the risk of equipment failure and costly downtime.
The Mersen Surge-Trap K2 range combines high discharge capability, fast response and replaceable protection cartridges, making maintenance simple while providing long-term protection for valuable electrical infrastructure.
Typical Applications
- 277 V TN-S distribution boards.
- Industrial switchgear and control panels.
- Commercial electrical installations.
- Building management systems.
- PLC and automation cabinets.
- Protection of sensitive electronic equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Voltage | 277 V | |
|---|---|---|
| Poles | 2-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Earthing System | TN-S | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | No | |
| Manufacturer | Mersen | |
| Series | Surge-Trap K2 | |
| Model | K2-2P320 | |
| SKU / Part number | 44020210 | |
| Product type | Surge protection device | |
| IEC SPD classification | Type 2 / Class II | |
| UL SPD classification | Type 1 Component Assembly | |
| Internal configuration | 2+0 | |
| Number of poles | 2 | |
| System compatibility | TN-S | |
| Protection modes | L-PE / N-PE | |
| Nominal operating voltage | 277 V AC | |
| Maximum continuous operating voltage | 320 V AC | |
| Nominal discharge current | 20 kA | |
| Maximum discharge current | 50 kA | |
| Voltage protection level | ≤1.5 kV | |
| Response time | ≤25 ns | |
| Residual current | <1 mA | |
| Short-circuit withstand | 25 kA | |
| Maximum back-up fuse | 315 A gG | |
| Protection rating | IP20 | |
| Housing material | PA6 CT1 & PA66 CT1 | |
| Mounting type | DIN rail | |
| DIN rail modules | 2 | |
| Weight | approx. 0.205 kg | |
| EAN | 8435297889809 | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 44020210 used for?
The Mersen 44020210 protects 277 V TN-S electrical installations against transient overvoltages caused by lightning activity and electrical switching events.
What type of surge protection device is the K2-2P320?
It is a Type 2 / Class II surge protection device designed for secondary surge protection in low-voltage TN-S electrical systems.
What discharge current can the device withstand?
The K2-2P320 is rated for a 20 kA nominal discharge current and a 50 kA maximum discharge current using the standard 8/20 µs waveform.
Can the protection module be replaced?
Yes. The pluggable cartridge design allows the protection module to be replaced without removing the complete DIN-rail base.
Where is this surge protection device typically installed?
It is commonly installed in commercial distribution boards, industrial control panels, switchgear and automation systems to protect sensitive electrical equipment.
Trusted Surge Protection from Mersen
Mersen Surge-Trap K2 surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals worldwide to safeguard critical electrical systems against damaging transient overvoltages.
