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K1-1P275 Mersen Surge Protector Type 1+2 SPD 1 Pole 230 Volt 20KA L-N
Mersen K1-1P275 Type 1+2 pluggable surge protection device for 230 V AC systems with 275 V continuous operating voltage, 12.5 kA lightning impulse current and 50 kA maximum discharge current.
£63.86
Why Choose the Mersen K1-1P275 Type 1+2 Surge Protection Device?
The Mersen K1-1P275, product code 44120102, is a premium Type 1+2 Surge Protection Device (SPD) designed to protect low-voltage electrical installations against transient overvoltages caused by lightning strikes and switching events. Suitable as the first level of protection within a main distribution board, it combines both Type 1 and Type 2 surge protection in a compact, pluggable module.
Designed for single-phase AC systems, the K1-1P275 features a 1+0 protection configuration, a continuous operating voltage (Uc) of 275 V AC, and a replaceable cartridge design for simplified maintenance. Its robust construction and international certifications make it ideal for industrial, commercial and residential installations requiring dependable surge protection.
With an Iimp rating of 12.5 kA (10/350 μs), Imax of 50 kA (8/20 μs), and a low voltage protection level (Up ≤1.5 kV), the Mersen K1-1P275 provides reliable protection for sensitive electrical equipment while ensuring compliance with modern installation standards.
Key Advantages
- Combined Type 1 + Type 2 surge protection.
- Designed for 230 V single-phase AC systems.
- Pluggable cartridge allows fast replacement during maintenance.
- High 12.5 kA lightning impulse current (Iimp).
- 50 kA maximum discharge current (Imax).
- Compact DIN rail mounting for modern distribution boards.
Key Features
- Manufacturer: Mersen
- Series: Surge-Trap® K – K1 Series
- Catalogue number: K1-1P275
- Product code: 44120102
- SPD Type: IEC Class I + II (Type 1+2)
- Configuration: 1+0
- Pluggable module design.
- Visual status indication.
Reliable Protection Against Transient Overvoltages
Surge protection devices safeguard electrical installations by diverting damaging transient overvoltages safely to earth before they reach connected equipment. Type 1+2 SPDs are specifically designed to protect against both direct lightning currents and switching surges, making them suitable for installation at the origin of a building's electrical installation.
The Mersen Surge-Trap® K1 Series provides dependable protection for commercial, industrial and residential installations. Its pluggable construction simplifies maintenance, while the high surge capacity helps minimise equipment damage and system downtime following transient overvoltage events.
Typical Applications
- Main low-voltage distribution boards.
- Commercial buildings.
- Industrial facilities.
- Outdoor LED lighting installations.
- Photovoltaic systems.
- Battery energy storage systems (BESS).
- EV charging infrastructure.
- Telecommunications equipment.
- Water treatment plants.
Technical Specifications
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| Impulse Current Iimp (kA) | 12.5 kA | |
|---|---|---|
| SPD Type | Type 1+2 | |
| Voltage | 230 V | |
| Phase | Single Phase | |
| Device Type | Surge protection device | |
| Earthing System | TN-C, TN-S, TT | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | No | |
| Manufacturer | Mersen | |
| Model | K1-1P275 | |
| Product code | 44120102 | |
| EAN | 8435297888017 | |
| Product type | Type 1+2 Surge Protection Device | |
| IEC SPD Type | Class I + II | |
| UL SPD Type | Type 1 Component Assembly | |
| System configuration | TN-S, TN-C, TT | |
| Nominal system voltage (Un) | 230 V AC | |
| Maximum continuous operating voltage (Uc) | 275 V AC | |
| Lightning impulse current (Iimp 10/350 μs) | 12.5 kA | |
| Maximum discharge current (Imax 8/20 μs) | 50 kA | |
| Nominal discharge current (In 8/20 μs) | 20 kA | |
| Voltage protection level (Up) | ≤1.5 kV | |
| Mounting | DIN rail | |
| Format | Pluggable | |
| Protection indication | Visual indicator | |
| Flammability rating | UL94 V-0 | |
| Product width | 18 mm | |
| Product height | 90 mm | |
| Product depth | 90.4 mm | |
| Weight | Approx. 0.184 kg | |
| RoHS compliant | Yes | |
| Applicable standard | IEC 61643-11 |
Frequently Asked Questions
What is the Mersen K1-1P275 used for?
It protects low-voltage electrical installations from lightning-induced surges and transient overvoltages by combining Type 1 and Type 2 surge protection within a single device.
What does Type 1+2 surge protection mean?
Type 1+2 devices protect against both direct lightning currents entering the installation and switching-induced transient overvoltages, making them suitable for installation at the main distribution board.
What is the maximum continuous operating voltage?
The K1-1P275 is designed for systems with a continuous operating voltage of 275 V AC.
Is the surge protection module replaceable?
Yes. The K1-1P275 features a pluggable cartridge, allowing quick replacement without removing the complete base from the DIN rail.
Where is this SPD typically installed?
It is typically installed within the main low-voltage distribution board of commercial, industrial and residential electrical installations.
Trusted for Electrical Surge Protection
Mersen Surge-Trap® surge protection devices are trusted worldwide by electrical engineers, panel builders and contractors for providing reliable protection against lightning and transient overvoltages in critical electrical installations.
