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Cable float level switch is a reliable float switch with SPDT contact (normally open and normally closed), operating on AC 110V~220V at 50/60Hz, with customizable cable length. SUCH float switch is widely used in water tanks, sump pumps, and well pumps for automatic water level control. The fully automatic design enables both water filling and drainage control, effectively preventing pump dry running, while offering excellent electrical performance, high insulation, and stable, long-term operation.
Auto-fill-water mode:
Auto-drainage and lack-water protection mode:
A cable float switch is a liquid level control device that uses a floating ball connected by a cable to detect liquid level changes and automatically control pumps, valves, or alarms.
It is used for automatic liquid level control, such as starting or stopping pumps to manage water filling and drainage, and to prevent overflow or dry running.
The switch works by the movement of the float as the liquid level rises or falls. When the float reaches a set level, it triggers an internal switch to control the connected equipment.