Wylex Replacement Plug for Type 1 + 2 Lightning / Surge Arrester Combinations. Type 1+2 Surge Arresters combine the benefits of both type 1 and type 2 having both high impulse current withstand (10/350s associated with direct lightning strikes and a low voltage protection level of 1.5kV (Up) exceeding the requirements for category II equipment identified within table 44.3 (BS7671)

• · Replacement plug in element
• · For NHSPD4421T12
• · N-PE spark gap
• · 36mm
• · Surge and lightning arresters have a lifespan directly related to the number and magnitude of their operations.
• · All Wylex devices provide visual life status indication.
• · The plug in unit must be removed during installation insulation resistance testing