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K1-4P275 Mersen Surge Protector Type 1+2 SPD 4 Pole 230/400 Volt 20KA TNS
MPN: 44120404
Alt. SKU: K1-4P275
Special Price
£294.29
£245.24
Regular Price
£392.39
This product replaces this item:
Why Choose the SPD T1+2 4+0 Uc 275Vac K1-4P275?
The SPD T1+2 4+0 Uc 275Vac K1-4P275 offers advanced surge protection for three-phase power systems, effectively safeguarding critical equipment against transient overvoltages. Combining Type 1 and Type 2 protection in a single device, it ensures reliable defence against direct lightning strikes and switching surges.
Featuring a robust 4-pole configuration and a continuous operating voltage of 275V AC, this SPD is ideal for industrial installations seeking high performance and long-term durability. Its compact design, ease of installation, and compliance with international standards make it a trusted choice for modern electrical infrastructure.
Technical Specifications
- Item number: 44120404
- Catalogue No: K1-4P275
- Description: SPD, T1+2, 4+0, Uc 275Vac
- EAN/UPC Code: 8435297888000
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- UL SPD Type: Type 1 Component Assembly
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 230/400
- AC or DC: AC
- Nominal Discharge Current (In) (8/20): 20 kA
- Max Discharge Current : Imax (8/20): 50 kA
- Protection Modes: L-PE / N-PE
- System Configuration: TNS
- Lightning Impulse Current (10/350) (LIMP): 12.5 kA
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace)
- Number of Poles: 4-Pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 315 A [gG]
- Housing Material: PA6 CT1 & PA66 CT1
- MOV Response Time: ≤25
- Installation Mounting: DIN rail
- MCOV L-G: 275 V
- MCOV L-L: 550 V
- MCOV N-G: 275 V
- MCOV L-N: 550 V
- VPR L-G: 1200 V
- VPR L-L: 2000 V
- VPR N-G: 1200 V
- VPR L-N: 2000 V
- Replacement Plug L1: 44120001
- Product Width: 72 mm
- Product Length: 90.4 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.684 kg
- Sell Pack Width: 78 mm
- Sell Pack Length: 97 mm
- Sell Pack Height: 118 mm
- Product group: Power Line SPDs
- Product Weight: 0.641 kg
Product Code: 44120404
Key Benefits
- Comprehensive surge protection combining Type 1 and Type 2 in one device
- Suitable for three-phase systems with 4-pole configuration
- High nominal discharge current of 20 kA and maximum discharge current of 50 kA
- Robust housing materials (PA6 CT1 & PA66 CT1) ensure durability
- Visual indication system for easy status monitoring
- Compact design with DIN rail mounting for easy installation
- Compliance with IEC and UL standards for reliable performance
Compatibility
This SPD is compatible with industrial TNS system configurations operating at nominal voltages of 230/400 V AC. It supports protection modes L-PE and N-PE and is designed to work with backup fuses up to 315 A [gG]. The pluggable format allows easy integration into existing electrical panels with DIN rail mounting.
Applications
- Industrial power distribution boards
- Commercial and industrial three-phase electrical installations
- Protection of sensitive electronic equipment from transient surges
- Renewable energy systems requiring surge protection
- Infrastructure installations exposed to lightning and switching surges
Frequently Asked Questions
What does the designation T1+2 mean?
T1+2 indicates that the SPD provides both Type 1 and Type 2 surge protection, suitable for direct lightning strikes and switching surges respectively.
Can this SPD be used in single-phase systems?
This model is designed primarily for three-phase systems with a 4-pole configuration; single-phase applications may require a different product.
How does the indication system work?
The SPD features a visual indicator that shows green when the device is functioning correctly and changes colour when replacement is necessary.
What is the maximum backup fuse rating for this SPD?
The maximum recommended backup fuse rating is 315 A [gG].
Common Search Terms
surge protection device, SPD 4-pole, Type 1+2 SPD, 275Vac surge protector, industrial surge protection, DIN rail SPD, three-phase surge protector, power line SPD
| Manufacturer Part Number | 44120404 |
|---|---|
| Packed Quantity | 1 |
| Manufacturer | Mersen |
| Number of Poles | 4 Pole |
| Voltage | 230/400V |
| Maximum Continuous Voltage | 275V |
| Nominal Discharge Current | 20Ka |
| Alternative Product SKU | K1-4P275 |
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