K1-4PG320 Mersen Surge Protector Type 1+2 SPD 4 Pole 277/480 Volt 20KA TT

Why Choose the SPD T1+2, 3+1, Uc 320Vac K1-4PG320?

The SPD T1+2, 3+1, Uc 320Vac K1-4PG320 offers comprehensive surge protection for three-phase TN and TT systems, effectively safeguarding critical equipment against transient overvoltages caused by lightning strikes and switching operations. Its combination of Type 1+2 protection ensures robust performance for both main and sub-distribution boards.

Featuring a maximum continuous operating voltage (Uc) of 320 V AC, this surge protective device is engineered for reliable operation in demanding industrial and commercial environments. Easy DIN rail mounting and clear status indication streamline installation and maintenance, making it a practical choice for long-term system protection.

Product Code: 44120408

Key Benefits

• Comprehensive Type 1+2 surge protection for enhanced safety.
• Suitable for three-phase TN and TT systems.
• High nominal discharge current of 20 kA ensures effective surge handling.
• Clear green/red indication system for easy status monitoring.
• Pluggable format allows for straightforward replacement and maintenance.
• Robust housing materials (PA6 CT1 & PA66 CT1) ensure durability.
• Compact dimensions facilitate easy DIN rail installation.

Compatibility

This SPD is compatible with three-phase TN (TNS) and TT electrical distribution systems with nominal operating voltages of 277/480 V AC. It is designed to work seamlessly with main and sub-distribution boards requiring Type 1+2 surge protection and supports installation with back-up fuses up to 315 A [gG].

Applications

• Industrial power distribution boards.
• Commercial building electrical installations.
• Protection of sensitive electronic equipment from transient surges.
• Renewable energy systems requiring surge protection.
• Infrastructure and utility power systems.

Technical Specifications

• Item number: 44120408
• Catalogue No: K1-4PG320
• Description: SPD, T1+2, 3+1, Uc 320Vac
• EAN/UPC Code: 8435297888222
• 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-N / N-PE
• System Configuration: TT, TNS
• Lightning Impulse Current (10/350) (LIMP): 12.5 kA
• 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: 1000 V
• VPR L-N: 1200 V
• Replacement Plug N-PE: 44120000
• Replacement Plug L-N: 44120003
• Product Width: 72 mm
• Product Length: 90.4 mm
• Product Height: 90 mm
• Sell Pack Quantity: 1 EA
• Sell Pack Weight: 0.655 kg
• Sell Pack Width: 78 mm
• Sell Pack Length: 97 mm
• Sell Pack Height: 118 mm
• Product group: Power Line SPDs
• Product Weight: 0.61 kg

Common Search Terms

SPD 320Vac, surge protection device, Type 1+2 SPD, 4-pole surge protector, three-phase surge protector, DIN rail SPD, industrial surge protection, K1-4PG320, power line SPD, lightning surge protector.