The invention discloses a conductor lead for a protection circuit. The lead is made of a copper alloy, and the copper alloy comprises the following raw materials in percentage by weight of 0.6%-0.9% of zinc powder, 2.5%-3.5% of nickel powder, 0.5%-0.8% of zirconium powder, 0.4%-0.5% of cerium powder, 0.6%-0.8% of silicon powder, 0.06%-0.08% of tin powder, 0.3%-0.8% of iron powder, 0.2%-0.4% of boron powder and the balance of copper powder, totaling 100%. The protection circuit open circuit product manufactured by adopting the lead is suitable for a DFN packaging series, has very low clamping voltage, quick response and relatively high surge bearing capability, and can quickly respond to switching off to ensure that the protection circuit is not damaged under the condition that the voltage and the current are higher than the designed rated voltage and the rated current.