The right comparison framework is simple: compare signal type, isolation need, real accuracy, installation method, and lifecycle cost. Buyers who compare only rated current and quotation price almost always miss the most expensive risks.

When buying a power system sensor, the cheapest part is not automatically the lowest-cost choice. Real cost comes from power loss, thermal burden, isolation design, calibration effort, drift over time, fault response, and service impact. Buyers who evaluate only unit price often optimize the wrong number. Buyers who evaluate total cost of ownership usually make the safer, more scalable, and more profitable decision.