To address the problem of long response time and prolonged short-circuit current impact in existing transformer current-limiting protection devices, this paper proposes a novel topology for a zero-loss deep current-limiting protection device using artificial zero-crossing technology. By introducing an artificial zero-crossing branch, a resonant current is generated and superimposed onto the main switch branch, forcing the current in the main switch branch to achieve zero crossing artificially. This enables the current-limiting branch to be quickly introduced into the circuit, effectively limiting the short-circuit current. Simulation results demonstrate that the proposed topology achieves faster fault response time, reducing the time taken for the current-limiting device to the millisecond level. This significantly reduces the first-wave short-circuit current impact, achieving effective protection for power transformers.