K2-4PG275 Mersen Surge Protector Type 2 SPD 4 Pole 230/400 Volt 20KA TT

Why Choose the K2-4PG275 Type 2 Surge Protection Device?

The K2-4PG275 (SKU 44020400) offers robust Type 2 surge protection for low-voltage power distribution systems, rated for continuous operation at up to 275 V AC. Its four-pole design ensures comprehensive coverage, making it ideal for three-phase and neutral installations where reliable protection from transient overvoltages is critical.

This SPD is engineered for ease of installation and long-term reliability, reducing downtime risks and safeguarding sensitive equipment. Fully compliant with IEC standards, it is an optimal choice for industrial and commercial environments demanding high-performance surge mitigation.

Product Code: 44020400

Key Benefits

• Comprehensive four-pole protection for three-phase and neutral systems.
• High nominal discharge current of 20 kA with a maximum discharge current of 50 kA for effective surge mitigation.
• Pluggable format allows for easy installation and maintenance.
• Clear indication system with green (OK) / not green (replace) status for quick visual checks.
• Robust construction with PA6 CT1 & PA66 CT1 housing materials for durability.
• Compatible with TT and TNS system configurations.
• Designed to withstand short circuit currents up to 25 kA.

Compatibility

The K2-4PG275 is compatible with low-voltage AC power distribution systems operating at 230/400 V, suitable for TT and TNS earthing systems. It supports protection modes L-N and N-PE, making it ideal for industrial and commercial installations requiring Type 2 surge protection. The device fits standard DIN rail mounting systems and is designed to work with backup fuses up to 315 A [gG].

Applications

• Industrial power distribution boards.
• Commercial building electrical panels.
• Protection of sensitive electronic equipment in manufacturing plants.
• Renewable energy systems requiring surge protection.
• Data centres and IT infrastructure installations.
• General surge protection in low-voltage AC power systems.

Technical Specifications

• Item number: 44020400
• Catalogue No: K2-4PG275
• Description: SPD, T2, 4PG, Uc 275Vac
• EAN/UPC Code: 8435297889939
• RoHS Compliant: Yes
• IEC SPD Type: Class 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-N / N-PE
• System Configuration: TT, TNS
• Following Current (Ifi): 100 A
• 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
• Installation Mounting: DIN rail
• Uc (L-N): 275 V
• Uc (N-PE): 255 V
• Up at In (N-PE): ≤1,5 kV
• Up at In (L-N): ≤1,5 kV
• Up at In (L-PE): ≤1,8 kV
• MCOV L-G: 275 V
• MCOV L-L: 550 V
• MCOV N-G: 305 V
• MCOV L-N: 275 V
• VPR L-G: 1500 V
• VPR L-L: 1800 V
• VPR N-G: 900 V
• VPR L-N: 1000 V
• Replacement Plug N-PE: 44020000
• Replacement Plug L-N: 44020001
• Product Width: 72 mm
• Product Length: 74.4 mm
• Product Height: 90 mm
• Sell Pack Quantity: 1 EA
• Sell Pack Weight: 0.474 kg
• Sell Pack Width: 78 mm
• Sell Pack Length: 97 mm
• Sell Pack Height: 118 mm
• Product group: Power Line SPDs
• Product Weight: 0.429 kg

Common Search Terms

Type 2 surge protector, 4-pole SPD, 275V AC surge protection, DIN rail SPD, industrial surge protection device, three-phase surge protector, transient voltage suppressor, power line SPD, K2-4PG275, 44020400 surge protector.