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

Why Choose the IR K2-4PG275-M Surge Protection Device?

The IR K2-4PG275-M is a reliable Type 2 surge protection device (SPD) engineered for three-phase TN-C-S and TN-S systems with a dedicated neutral (3+1 configuration). Designed for continuous operation at 275 V AC (Uc), it offers robust defence against transient overvoltages, safeguarding sensitive equipment and enhancing system longevity.

Featuring efficient plug-in modules for rapid servicing and a clear status indicator for visual monitoring, this SPD delivers high performance with minimal maintenance. Its compact DIN-rail housing ensures easy integration into residential, commercial, or industrial distribution boards, making it ideal for demanding applications where protection and downtime reduction are critical.

Product Code: 44020401

Key Benefits

• Reliable protection for three-phase TN-C-S and TN-S systems with dedicated neutral (3+1 configuration).
• Continuous operation at 275 V AC ensures system stability and safety.
• Plug-in modules allow for quick and easy servicing, reducing downtime.
• Clear green/not green microswitch indication system for simple status monitoring.
• Compact DIN-rail mounting for seamless integration into various distribution boards.
• High nominal discharge current (20 kA) and maximum discharge current (50 kA) for robust surge handling.

Compatibility

This surge protection device is compatible with TT and TNS system configurations and is designed specifically for three-phase systems with a dedicated neutral conductor. It supports nominal operating voltages of 230/400 V AC and can be integrated into systems requiring Type 2 (Class II) surge protection. Suitable for use with backup fuses up to 315 A [gG].

Applications

• Residential electrical distribution boards requiring surge protection.
• Commercial and industrial power distribution systems.
• Protection of sensitive electronic equipment from transient overvoltages.
• Integration into DIN-rail mounted control panels and switchboards.
• Systems where quick maintenance and clear status indication are essential.

Technical Specifications

• Item number: 44020401
• Catalogue No: K2-4PG275-M
• Description: SPD, T2, 3+1, Uc 275Vac, IR
• EAN/UPC Code: 8435297884149
• 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) Microswitch
• 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

surge protection device, SPD, Type 2 SPD, three-phase surge protector, DIN rail SPD, 275 V surge protector, plug-in surge module, electrical surge arrester, TN-C-S SPD, TN-S system surge protection, industrial surge protector, power line SPD