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

Why Choose the IR K1-4PG320-M Surge Protective Device?

The IR K1-4PG320-M is a robust Type 1, 3+1 surge protective device (SPD) designed for effective protection against high-energy lightning surges in low voltage power systems up to 320 V AC. Its modular design enables quick installation and reliable performance in demanding industrial and commercial environments.

Engineered for maximum safety and operational continuity, this SPD features high discharge capacity and durable construction, making it an ideal choice for critical infrastructure where uninterrupted power and equipment protection are essential.

Product Code: 44120409

Key Benefits

• High discharge capacity with 20 kA nominal and 50 kA maximum discharge current for superior surge protection.
• Modular and pluggable design allows for easy installation and maintenance.
• Indication system with green (OK) and microswitch alerts for quick status monitoring.
• Compatible with TT and TNS system configurations ensuring versatile application.
• Robust housing made from PA6 CT1 & PA66 CT1 for enhanced durability.
• Meets IEC Class I+II and UL Type 1 Component Assembly standards for safety and reliability.

Compatibility

The IR K1-4PG320-M is compatible with low voltage power systems operating up to 320 V AC, suitable for TT and TNS system configurations. It supports 4-pole installations and is designed for DIN rail mounting, making it adaptable to a wide range of industrial and commercial electrical panels.

Applications

• Protection of critical infrastructure against lightning and surge events.
• Industrial facilities requiring reliable surge protection for sensitive equipment.
• Commercial buildings with low voltage power distribution systems.
• Renewable energy installations needing robust surge suppression.
• Data centres and telecommunications equipment protection.

Technical Specifications

• Item number: 44120409
• Catalogue No: K1-4PG320-M
• Description: SPD, T1, 3+1, Uc 320Vac, IR
• EAN/UPC Code: 8435297887690
• 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) 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): 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: 0.661 kg
• Sell Pack Width: 78 mm
• Sell Pack Length: 97 mm
• Sell Pack Height: 118 mm
• Product group: Power Line SPDs
• Product Weight: 0.616 kg

Common Search Terms

Surge protective device, SPD 320V, Type 1 surge protector, 4-pole SPD, lightning surge protection, DIN rail SPD, industrial surge protection, power line SPD, IR surge protector, 50kA surge arrester.