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K2-1P440 Mersen Surge Protector Type 2 SPD 1 Pole 400 Volt 20KA L-N
Mersen 44020110 K2-1P440 Surge-Trap K2 Type 2 single-pole surge protection device with a 440 V AC maximum continuous operating voltage, 20 kA nominal discharge current and 50 kA maximum discharge current.
£28.91
Why Choose the Mersen 44020110 K2-1P440 Surge Protection Device?
The Mersen 44020110, also known as the K2-1P440, is a compact and reliable Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations against transient overvoltages. As part of the advanced Mersen Surge-Trap K2 series, it is suitable for commercial, industrial and infrastructure applications requiring dependable protection for sensitive electrical and electronic equipment.
This single-pole surge protector features a practical pluggable design that simplifies inspection, maintenance and cartridge replacement. Its integrated visual status indicator clearly shows whether the device is operating correctly or requires replacement, helping maintenance teams identify protection status quickly.
With a nominal operating voltage of 400 V AC, a maximum continuous operating voltage of 440 V AC, a nominal discharge current of 20 kA and a maximum discharge current of 50 kA, the Mersen 44020110 provides effective protection against induced voltage surges. Its narrow DIN-rail format allows straightforward installation inside distribution boards, switchgear and electrical control panels.
Key Advantages
- Reliable Type 2 surge protection for low-voltage electrical installations.
- 50 kA maximum discharge current for robust transient overvoltage protection.
- 440 V AC maximum continuous operating voltage.
- Pluggable cartridge design simplifies servicing and replacement.
- Visual status indication supports quick inspection and maintenance.
- Compact single-pole format for space-efficient DIN-rail installation.
Key Features
- Mersen Surge-Trap K2 series.
- Type 2 / Class II surge protection device.
- Single-pole configuration.
- 400 V AC nominal operating voltage.
- 440 V AC maximum continuous operating voltage.
- 20 kA nominal discharge current.
- 50 kA maximum discharge current.
- Pluggable protection cartridge for simplified maintenance.
- Green visual indicator confirms normal operating condition.
- Compatible with TN-S, TN-C and TT electrical systems.
Reliable Protection for Electrical Equipment
Transient overvoltages can be generated by indirect lightning activity, utility switching operations and the operation of inductive electrical loads. Although these voltage spikes are extremely brief, they can damage drives, power supplies, controllers, communication equipment and other sensitive electronic components.
The Mersen Surge-Trap K2 series diverts damaging surge currents away from connected equipment. Its high discharge capacity, visual condition indicator and replaceable protection cartridge help improve electrical system reliability while reducing the risk of equipment damage, unexpected downtime and expensive repairs.
Typical Applications
- Commercial and industrial distribution boards.
- Electrical control panels and switchgear assemblies.
- Manufacturing machinery and production equipment.
- Building-management and industrial automation systems.
- Variable-speed drives, PLCs and electronic power supplies.
- Secondary surge protection in low-voltage installations.
Technical Specifications
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| Voltage | 400 V | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Earthing System | TN-C, TN-S, TT | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | No | |
| Manufacturer | Mersen | |
| Series | Surge-Trap K2 | |
| Model | K2-1P440 | |
| SKU / part number | 44020110 | |
| Product type | Surge protection device | |
| SPD classification | Type 2 / Class II | |
| Number of poles | 1 | |
| Nominal operating voltage | 400 V AC | |
| Maximum continuous operating voltage | 440 V AC | |
| Nominal discharge current | 20 kA | |
| Maximum discharge current | 50 kA | |
| Surge waveform | 8/20 µs | |
| Short-circuit withstand rating | 25 kA | |
| System compatibility | TN-S, TN-C, TT | |
| Status indication | Green visual indicator | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Terminal tightening torque | 3 N m | |
| Operating temperature | -40 to +85 °C | |
| Dimensions (H × W × D) | approx. 74.4 × 18 × 90 mm | |
| Weight | approx. 0.096 kg | |
| EAN | 8435297889748 | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 44020110 used for?
The Mersen 44020110 protects low-voltage electrical installations and connected equipment against transient overvoltages caused by switching events and indirect lightning activity.
What type of surge protection device is the Mersen 44020110?
It is a Type 2 / Class II surge protection device designed for use as secondary protection in distribution boards or as primary protection in installations that are not directly exposed to lightning strikes.
What is the maximum continuous operating voltage?
The K2-1P440 has a maximum continuous operating voltage of 440 V AC and a nominal operating voltage of 400 V AC.
What discharge current can the device handle?
The device has a nominal discharge current of 20 kA and a maximum discharge current of 50 kA using an 8/20 microsecond surge waveform.
Can the surge protection cartridge be replaced?
Yes. The Mersen 44020110 has a pluggable cartridge design that allows the protection module to be replaced without removing the complete DIN-rail base assembly.
Trusted Surge Protection from Mersen
Mersen Surge-Trap K2 devices are widely used by electrical engineers, panel builders and industrial operators to protect critical electrical equipment against damaging transient overvoltages.
