Magnetic Float Level Switches

The 520 Series combines magnetic floats and reed switches to detect specified liquid levels. Switching positions are configured for the installation and control requirements. Metal and nonmetal float options must be selected for liquid specific gravity, nozzle clearance and chemical compatibility.

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Model: 520 Series
Category: Level
Revision: Updated 2026-09-24

SPECIFICATIONS

Technical specifications

Parameter	Specification	Unit
Operating principle	Magnetic float and reed switch for point-level detection
Maximum switching power	70; voltage and current limits also apply	W
Maximum switching voltage	250	V AC
Maximum switching current	0.7	A
Switching differential	Approximately 5–15	mm
Repeatability	Less than ±5	mm
Float options	316/316L stainless steel, PP and PVDF, depending on float code

Application and selection notes

Check that the float fits through the nozzle and allow overhead clearance for removal.
Temperature, pressure, minimum specific gravity and viscosity limits depend on the float code.
For fouling or coating fluids, assess float movement and cleaning access.

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