A modern consumer expects more from a kettle than simply boiling water. When someone sets a kettle to 85°C for green tea, they expect it to stop accurately, hold that temperature steadily, and avoid overshooting or repeated reheating.
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A kettle model update, a supplier adjustment, or a cost-down request often leads to a very practical question inside product teams: can an existing 5-pole control base simply be replaced with a 3-pole one?
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When a kettle model looks almost identical on the outside but uses different control bases or wiring layouts inside, many product teams pause at the same question: why does pole count matter at all?
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