K2-4PG320 Mersen Surge Protector Type 2 SPD 4 Pole 277/480 Volt 20KA TT

Why Choose the SPD, T2, 4PG, Uc 320Vac K2-4PG320?

The SPD, T2, 4PG, Uc 320Vac K2-4PG320 offers reliable Type 2 surge protection for low-voltage power distribution systems, safeguarding sensitive equipment from transient overvoltages. Its robust four-pole design supports consistent operation in three-phase AC networks up to 320V nominal voltage.

Engineered for rapid installation and long-term durability, this unit ensures compliance with current safety standards, minimising downtime and maintenance requirements for critical industrial applications.

Technical Specifications

• Item number: 44020408
• Catalogue No: K2-4PG320
• Description: SPD, T2, 4PG, Uc 320Vac
• EAN/UPC Code: 8435297889953
• RoHS Compliant: Yes
• IEC SPD Type: Class 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-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): 320 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: 320 V
• MCOV L-L: 640 V
• MCOV N-G: 305 V
• MCOV L-N: 320 V
• VPR L-G: 1500 V
• VPR L-L: 2000 V
• VPR N-G: 900 V
• VPR L-N: 1200 V
• Replacement Plug N-PE: 44020000
• Replacement Plug L-N: 44020003
• Product Width: 72 mm
• Product Length: 74.4 mm
• Product Height: 90 mm
• Sell Pack Quantity: 1 EA
• Sell Pack Weight: 0.487 kg
• Sell Pack Width: 78 mm
• Sell Pack Length: 97 mm
• Sell Pack Height: 118 mm
• Product group: Power Line SPDs
• Product Weight: 0.442 kg

Product Code: 44020408

Key Benefits

• Provides effective Type 2 surge protection for three-phase AC systems.
• Pluggable format allows for easy and quick installation or replacement.
• Visual indication system ensures simple status monitoring with green (OK) or non-green (replace) signals.
• High nominal discharge current (20 kA) and maximum discharge current (50 kA) for robust protection.
• Compatible with TT and TNS system configurations for versatile application.
• Durable housing materials (PA6 CT1 & PA66 CT1) ensure long-term reliability.
• DIN rail mounting facilitates convenient integration into existing electrical panels.

Compatibility

This surge protection device is compatible with three-phase AC power distribution systems rated at 277/480 V nominal voltage, suitable for TT and TNS earthing systems. It supports installation on DIN rails and is designed to work effectively with backup fuses up to 315 A [gG]. Replacement plugs for N-PE and L-N connections are available under catalogue numbers 44020000 and 44020003 respectively.

Applications

• Industrial power distribution boards requiring surge protection.
• Commercial buildings with three-phase electrical installations.
• Data centres and IT infrastructure protection.
• Manufacturing plants with sensitive electronic equipment.
• Renewable energy systems integrating surge protection devices.

Common Search Terms

surge protection device, SPD 320Vac, Type 2 SPD, 4-pole surge protector, DIN rail SPD, industrial surge protection, three-phase surge protector, K2-4PG320, power line SPD, transient voltage protection