Phoenix Contact VAL-MS-EE-T1/T2-3+1-335 Combined Type 1/2 Lightning & Surge Arrester 3-Phase 230/415 V

The Phoenix Contact VAL-MS-EE-T1/T2-3+1-335 (Part No. 2910551) is a combined Type 1/Type 2 surge arrester designed to protect three-phase electrical supply systems from damaging overvoltage transients caused by lightning strikes and switching operations. It is suitable for 5-wire networks with separate neutral (N) and protective earth (PE), including L1, L2, L3, N and PE conductors, delivering coordinated protection at both main incoming and distribution panel levels.

This universal, varistor-based plug-in arrester provides fast response times (≤ 25–100 ns) to clamp surges and divert transient energy safely to earth. Designed for Lightning Protection Levels III and IV, it installs easily on a 35 mm DIN rail with screw-terminal connections and supports a broad range of conductor sizes.

Key Features:

• Model: VAL-MS-EE-T1/T2-3+1-335 3-phase surge arrester (2910551)

• Protection Type: Combined Type 1 (lightning) and Type 2 (surge) protection

• System: Three-phase with separate N & PE (5-conductor system)

• Nominal AC Voltage: 240 V / 415 V AC (50/60 Hz)

• Max. Continuous Operating Voltage (Uc): 335 V AC (L-N & L-PE)

• Nominal Discharge Current (8/20 µs): L-N 12.5 kA, L-PE 12.5 kA, N-PE 50 kA

• Max. Discharge Current (Imax): 50 kA (8/20 µs)

• Mounting: DIN rail 35 mm

• Connection: Screw terminals (flexible 1.5 – 25 mm², rigid 1.5 – 35 mm²)

• Response Time: ≤ 25 ns (L-N), ≤ 100 ns (L-PE, N-PE)

• Protection Indication: Optical fault indication

This Type 1/2 arrester provides layered protection for industrial power networks and critical infrastructure, reducing the risk of equipment damage and downtime from transient overvoltages.surg