K1-1P275-M Mersen Surge Protector Type 1+2 SPD 1 Pole 230 Volt 20KA L-N Remote Indication

Why Choose the M K1-1P275-M SPD?

The M K1-1P275-M is a surge protection device (SPD) with T1+2 rating, designed for effective protection in single-phase systems (1+0 configuration) against transient overvoltages. With a continuous operating voltage (Uc) of 275V AC, it ensures robust safeguarding of industrial and commercial electrical installations.

Engineered for reliability and ease of installation, this SPD delivers high discharge capacity, rapid response times, and long-term durability. It is the ideal choice for engineers seeking versatile, high-performance surge protection compliant with international standards.

Technical Specifications

• Item number: 44120103
• Catalogue No: K1-1P275-M
• Description: SPD, T1+2, 1+0, Uc 275Vac, M
• EAN/UPC Code: 8435297886655
• RoHS Compliant: Yes
• IEC SPD Type: Class I+II
• UL SPD Type: Type 1 Component Assembly
• Format: Pluggable
• Nominal Operating Volt Rating (Un): 230
• AC or DC: AC
• Nominal Discharge Current (In) (8/20): 20 kA
• Max Discharge Current : Imax (8/20): 50 kA
• System Configuration: TNS, TNC, TT (only L-N)
• 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: 1-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-N: 275 V
• VPR L-G: 1200 V
• VPR L-N: 1200 V
• Replacement Plug L1: 44120001
• Product Width: 18 mm
• Product Length: 90.4 mm
• Product Height: 90 mm
• Sell Pack Quantity: 1 EA
• Sell Pack Weight: 0.192 kg
• Sell Pack Width: 22 mm
• Sell Pack Length: 97 mm
• Sell Pack Height: 118 mm
• Product group: Power Line SPDs
• Product Weight: 0.178 kg

Product Code: 44120103

Key Benefits

• High surge current capacity with 20 kA nominal discharge current and 50 kA maximum discharge current.
• Reliable protection for single-phase systems with T1+2 rating ensuring compliance with IEC Class I+II standards.
• Compact pluggable format for easy installation and replacement on DIN rail.
• Clear visual indication system with green (OK) and microswitch signalling for maintenance alerts.
• Robust construction with durable PA6 CT1 & PA66 CT1 housing materials.
• Suitable for various system configurations including TNS, TNC, and TT (L-N only).

Compatibility

The M K1-1P275-M SPD is compatible with single-phase AC electrical systems operating at nominal voltages up to 230V. It supports TNS, TNC, and TT earthing configurations (L-N only) and is designed to be mounted on standard DIN rails, making it suitable for integration into a wide range of industrial and commercial electrical panels.

Applications

• Industrial electrical distribution boards requiring surge protection.
• Commercial buildings with single-phase power supply systems.
• Protection of sensitive electrical and electronic equipment from transient overvoltages.
• Installation in environments where compliance with IEC Class I+II surge protection is mandatory.
• Use in systems requiring a compact, pluggable SPD solution with visual status indication.

Common Search Terms

surge protection device, SPD, single-phase surge protector, T1+2 SPD, 275V AC SPD, DIN rail SPD, pluggable surge protector, industrial surge protection, power line SPD, M K1-1P275-M