Application‑based segmentation further refines the EV PCB Relays market, allocating demand across motor‑control, battery‑management, power‑distribution, charging‑system, and HVAC functions. Motor‑control relays, essential for inverter and drive circuits, represent the largest slice at approximately 35 % of market share, reflecting the high current and safety requirements of traction systems. Battery‑management applications, responsible for cell‑balancing and protective isolation, follow with 25 % as vehicle ranges increase and thermal management becomes critical. Power‑distribution relays, used in onboard DC‑DC converters and auxiliary loads, account for 20 % of the market, driven by the need for compact, high‑efficiency switching. Charging‑system relays, facilitating AC‑DC conversion and grid interfacing, hold 15 % share, aligning with expanding fast‑charging infrastructure. Finally, HVAC relays, supporting climate control compressors and fans, comprise the remaining 5 %, a niche yet steady segment. These application categories collectively define the market taxonomy and determine the revenue composition of the EV PCB Relays market.