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12kv Surge Arrester with External Gap a Type. High Flow Capacity: Core component zinc oxide arrestor reaches 100kA flow capacity. Heavy Pollution Resistance: Creepage distance meets IV level heavy pollution requirements. Excellent Insulation: Smooth volt-second characteristic with high electrical frequency withstand voltage. Durable Polymer Housing: Good anti-fatigue behavior with CTI level of six. Full Customization: Flexible customization available from samples and designs. ISO Certified Quality: Certified ISO9001, ISO45001:2018, and ISO14001. 100% Product Inspection: Finished products undergo visual and function inspection. Fast Delivery: Average lead time is one month for both peak and off-peak seasons.