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The WSP-T1PDM3-12.5-50-230R Wallis mains distribution surge protector
Wiring diagram of a WSP-T1PDM3-12 mains distribution surge protector

The WSP-T1PDM3/12.5/50/230R is a Type 1 and 2 lightning arrester according to BS EN 61643-11. These arresters are recommended for use in the Lightning Protection Zones Concept at the boundaries of LPZ 0-1 (according to IEC 1312-1 and BS EN 62305) for lightning current equipotential bonding and elimination of switching surges that originate in power supply system’s entering the building. The main use of these arresters is structures of LPL III to IV according to BS EN 62305.

The WSP-T1PDM3/12.5/50/230R is mainly intended for use in TNS, TNC-S or TT systems.

When the WSP-T1PDM3/12.5/50/230R is operating correctly, the terminations 1-2 are connected to normally closed contacts, 2-3 are normally open. If the internal varistor component is damaged as a result of thermal overloading, terminations 1-2 will then be open and 2-3 closed.

Features and Benefits:

  • A response time (L/N tA) of <25 ns.
  • A response time (N/PE tA) of <100 ns.
  • Remote Signalling
  • Minimum life of 100,000 hours
Max. Continuous Operating Voltage (Uc)Lightning Impulse Current (10/350) L/N (Iimp)Lightning Impulse Current (10/350) N/PE (Iimp)Total Lightning Current (10/350) L1+L2+L3+N to PE (Itotal)Temporary Overvoltage (TOV) L/N (Ut)Temporary Overvoltage (TOV) N/PE (Ut)Voltage Protection Level (Up)Part Number
Max. Continuous Operating Voltage (Uc)275 VLightning Impulse Current (10/350) L/N (Iimp)12.5 kALightning Impulse Current (10/350) N/PE (Iimp)50 kATotal Lightning Current (10/350) L1+L2+L3+N to PE (Itotal)50kATemporary Overvoltage (TOV) L/N (Ut)335 V/5 secTemporary Overvoltage (TOV) N/PE (Ut)1200 V/0.2 secVoltage Protection Level (Up)<1.2kVPart NumberWSP-T1PDM3/12.5/50/230R


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