K1-4P275-M Mersen Surge Protector Type 1+2 SPD 4 Pole 230/400 Volt 20KA TNS Remote Indication

Why Choose the M K1-4P275-M Surge Protective Device?

The M K1-4P275-M is a Type 1+2 surge protective device (SPD), offering robust protection for low voltage installations against transient overvoltages from lightning and switching events. Designed with a 4+0 configuration and a maximum continuous operating voltage (Uc) of 275 Vac, it ensures reliable performance in demanding industrial and commercial environments.

This SPD is engineered for fast response and high discharge capacity, supporting easy integration into new and existing systems. Its modular design facilitates straightforward maintenance and replacement, making it an ideal choice for safeguarding critical equipment and ensuring operational continuity.

Technical Specifications

• Item number: 44120405
• Catalogue No: K1-4P275-M
• Description: SPD, T1+2, 4+0, Uc 275Vac, M
• EAN/UPC Code: 8435297888215
• RoHS Compliant: Yes
• IEC SPD Type: Class I+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-PE / N-PE
• System Configuration: TNS
• Lightning Impulse Current (10/350) (LIMP): 12.5 kA
• 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
• MOV Response Time: ≤25
• Installation Mounting: DIN rail
• MCOV L-G: 275 V
• MCOV L-L: 550 V
• MCOV N-G: 275 V
• MCOV L-N: 550 V
• VPR L-G: 1200 V
• VPR L-L: 2000 V
• VPR N-G: 1200 V
• VPR L-N: 2000 V
• Replacement Plug L1: 44120001
• Product Width: 72 mm
• Product Length: 90.4 mm
• Product Height: 90 mm
• Sell Pack Quantity: 1 EA
• Sell Pack Weight: 0.66 kg
• Sell Pack Width: 78 mm
• Sell Pack Length: 97 mm
• Sell Pack Height: 118 mm
• Product group: Power Line SPDs
• Product Weight: 0.65 kg

Product Code: 44120405

Key Benefits

• Provides comprehensive Type 1+2 surge protection for low voltage systems.
• High nominal discharge current of 20 kA ensures effective suppression of transient surges.
• Fast MOV response time (≤25 ns) minimises equipment exposure to surges.
• Clear visual indication system with microswitch for easy status monitoring and maintenance.
• Modular and pluggable design facilitates quick installation and replacement.
• Suitable for TNS system configurations ensuring broad application compatibility.
• Robust construction with high short circuit withstand rating (25 kA) enhances durability.

Compatibility

The M K1-4P275-M SPD is compatible with 230/400 V AC systems configured in TNS networks. It integrates seamlessly with industrial and commercial electrical installations requiring Type 1+2 surge protection. The device supports up to 315 A back-up fuse ratings and fits standard DIN rail mounting systems for easy incorporation into existing switchgear.

Applications

• Industrial manufacturing plants requiring robust surge protection.
• Commercial buildings with sensitive electronic equipment.
• Renewable energy installations such as solar and wind systems.
• Data centres and IT infrastructure to prevent downtime.
• Critical infrastructure including hospitals and transportation hubs.

Common Search Terms

surge protective device, SPD, Type 1+2 SPD, 4-pole surge protector, 275 Vac SPD, industrial surge protection, DIN rail SPD, transient voltage suppressor, lightning surge protector, power line SPD