Surge Signal NO-NC. LY1-B60 1P-N-PE series surge protection device(SPD) is suitable for TN-S,TN-C-S,TT,IT etc. power supply system of AC50/60Hz, less than 380V,installed on the joint of LPZ1 or LPZ2 and LPZ3,designed according to IEC61463-1,GB18802.1.
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