Phoenix Contact 2905346 Typ 2 prepäťová ochrana 3+1 pólová 275V AC 40kA DIN lišta sivá

Surge arrester for three-phase power systems with integrated remote signaling and high discharge capacity. The Phoenix Contact 2905346 protects low-voltage installations from transient overvoltages caused by lightning strikes or switching operations, ensuring continuous availability of connected equipment.

Advantages

Compact 3+1 pole design saves space on the DIN rail while providing complete protection for L1, L2, L3 and N-PE. The pluggable varistor modules allow quick replacement without disconnecting the wiring, reducing maintenance downtime. A floating changeover contact enables remote monitoring of the protection status, integrating seamlessly into building management systems.

Suitable for

• Industrial control panels and machinery
• Building electrical distribution boards
• Renewable energy installations (solar inverters, wind turbines)
• Telecommunication and data center power supplies
• Commercial and residential sub-distribution boards

Key specifications

• SPD type: Type 2 / Class II according to IEC 61643-11
• Nominal voltage: 230 V AC, maximum continuous operating voltage Uc: 275 V AC
• Nominal discharge current In: 20 kA (8/20 µs), maximum discharge current Imax: 40 kA (8/20 µs)
• Voltage protection level Up: ≤ 1.5 kV
• Number of poles: 3+1 (L1, L2, L3, N-PE)
• Mounting: 35 mm DIN rail
• Protection element: varistor
• Response time: < 25 ns
• Remote signaling: floating changeover contact
• Degree of protection: IP20
• Operating temperature: -40 °C to 80 °C
• Housing material: Polyamide PA 6.6, colour grey

Recommendations

For optimal protection, install the surge arrester as close as possible to the power entry point of the installation. Ensure proper earthing and consider a backup fuse according to local regulations. Combine with Phoenix Contact surge protective devices for data and signal lines to achieve a complete protection concept.