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K1-4P320 Mersen Surge Protector Type 1+2 SPD 4 Pole 277/480 Volt 20KA TNS
MPN: 44120412
Alt. SKU: K1-4P320
Special Price
£317.83
£264.86
Regular Price
£423.78
This product replaces this item:
Why Choose the SPD, T1+2, 4+0, Uc 320Vac K1-4P320?
Designed for robust surge protection in low-voltage power systems, the SPD T1+2, 4+0, Uc 320Vac K1-4P320 delivers reliable performance compliant with both Type 1 and Type 2 applications. Its four-pole configuration ensures complete protection for three-phase systems, effectively safeguarding critical equipment from lightning strikes and transient overvoltages.
Rated for continuous operation at 320Vac, this device features a coordinated protection scheme and high discharge capacity, making it ideal for demanding industrial and commercial installations. The compact DIN-rail housing simplifies integration into existing panels, ensuring ease of installation and maintenance.
Technical Specifications
- Item number: 44120412
- Catalogue No: K1-4P320
- Description: SPD, T1+2, 4+0, Uc 320Vac
- EAN/UPC Code: 8435297888253
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- UL SPD Type: Type 1 Component Assembly
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 277/480
- 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: 320 V
- MCOV L-L: 640 V
- MCOV N-G: 320 V
- MCOV L-N: 640 V
- VPR L-G: 1200 V
- VPR L-L: 2000 V
- VPR N-G: 1200 V
- VPR L-N: 2000 V
- Replacement Plug L1: 44120003
- Product Width: 72 mm
- Product Length: 90.4 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.661 kg
- Sell Pack Width: 78 mm
- Sell Pack Length: 97 mm
- Sell Pack Height: 118 mm
- Product group: Power Line SPDs
- Product Weight: 0.63 kg
Product Code: 44120412
Key Benefits
- Comprehensive surge protection for three-phase systems with four-pole design.
- High discharge capacity ensures effective suppression of lightning and transient surges.
- Complies with IEC Class I+II and UL Type 1 standards for versatile application.
- Compact, pluggable DIN rail mounting for easy installation and maintenance.
- Visual indication system for quick status monitoring and maintenance planning.
- Robust housing materials (PA6 CT1 & PA66 CT1) for durability in industrial environments.
Compatibility
This SPD is compatible with low-voltage power distribution systems configured in TNS system topology. It supports nominal operating voltages of 277/480V AC and is suitable for use with backup fuses up to 315 A [gG]. The device integrates seamlessly with three-phase power installations requiring coordinated Type 1 and Type 2 surge protection.
Applications
- Industrial and commercial electrical distribution panels.
- Protection of critical machinery and control systems from transient overvoltages.
- Surge protection in manufacturing plants, data centres, and large commercial buildings.
- Integration into new or retrofit low-voltage power systems requiring high surge capacity.
- Use in environments with frequent lightning activity or electrical disturbances.
Frequently Asked Questions
What does the 4+0 configuration mean?
The 4+0 configuration indicates a four-pole device designed to protect all three phases plus the neutral conductor, providing comprehensive surge protection for three-phase systems.
Is this SPD suitable for both Type 1 and Type 2 applications?
Yes, this SPD complies with IEC Class I+II standards, making it suitable for both Type 1 (lightning current) and Type 2 (switching surge) protection.
How does the indication system work?
The device features a visual indication system using green to indicate normal operation and a non-green colour to signal that the SPD needs replacement, facilitating easy maintenance checks.
Can this SPD be installed on a DIN rail?
Yes, the SPD is designed for DIN rail mounting, allowing for straightforward installation in standard electrical panels.
Common Search Terms
surge protection device, SPD 4-pole, Type 1+2 SPD, industrial surge protector, DIN rail SPD, three-phase surge protection, transient voltage suppressor, lightning protection device, K1-4P320 SPD, 320Vac surge protector
| Manufacturer Part Number | 44120412 |
|---|---|
| Packed Quantity | 1 |
| Manufacturer | Mersen |
| Number of Poles | 4 Pole |
| Voltage | 277/480V |
| Maximum Continuous Voltage | 320V |
| Nominal Discharge Current | 20Ka |
| Alternative Product SKU | K1-4P320 |
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